./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.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_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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 1a89472887c6d71cf4d1ec04e28f84fbc7b73a39 .................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:05:30,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:05:30,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:05:30,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:05:30,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:05:30,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:05:30,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:05:30,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:05:30,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:05:30,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:05:30,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:05:30,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:05:30,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:05:30,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:05:30,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:05:30,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:05:30,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:05:30,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:05:30,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:05:30,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:05:30,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:05:30,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:05:30,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:05:30,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:05:30,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:05:30,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:05:30,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:05:30,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:05:30,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:05:30,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:05:30,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:05:30,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:05:30,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:05:30,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:05:30,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:05:30,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:05:30,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:05:30,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:05:30,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:05:30,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:05:30,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:05:30,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:05:30,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:05:30,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:05:30,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:05:30,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:05:30,569 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:05:30,570 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:05:30,570 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:05:30,570 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:05:30,570 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:05:30,571 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:05:30,572 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:05:30,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:05:30,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:05:30,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:05:30,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:05:30,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:05:30,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:05:30,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:05:30,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:05:30,574 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:05:30,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:05:30,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:05:30,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:05:30,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:05:30,575 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:05:30,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:05:30,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:05:30,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:05:30,576 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:05:30,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:05:30,579 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_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a89472887c6d71cf4d1ec04e28f84fbc7b73a39 [2020-11-28 03:05:30,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:05:30,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:05:30,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:05:30,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:05:30,848 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:05:30,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2020-11-28 03:05:30,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/data/f089cc2d5/38a1f7008afc4bab80c9f03dc9cb259b/FLAGce688bebf [2020-11-28 03:05:31,366 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:05:31,367 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2020-11-28 03:05:31,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/data/f089cc2d5/38a1f7008afc4bab80c9f03dc9cb259b/FLAGce688bebf [2020-11-28 03:05:31,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/bin/uautomizer/data/f089cc2d5/38a1f7008afc4bab80c9f03dc9cb259b [2020-11-28 03:05:31,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:05:31,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:05:31,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:31,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:05:31,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:05:31,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:31" (1/1) ... [2020-11-28 03:05:31,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b1f0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:31, skipping insertion in model container [2020-11-28 03:05:31,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:31" (1/1) ... [2020-11-28 03:05:31,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:05:31,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:05:32,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:32,044 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:05:32,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:05:32,097 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:05:32,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32 WrapperNode [2020-11-28 03:05:32,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:05:32,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:05:32,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:05:32,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:05:32,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:05:32,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:05:32,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:05:32,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:05:32,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... [2020-11-28 03:05:32,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:05:32,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:05:32,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:05:32,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:05:32,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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 03:05:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:05:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:05:32,332 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:05:32,333 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:05:32,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:32 BoogieIcfgContainer [2020-11-28 03:05:32,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:05:32,335 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:05:32,336 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:05:32,339 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:05:32,340 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:05:32,340 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:05:31" (1/3) ... [2020-11-28 03:05:32,341 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6aca981f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:05:32, skipping insertion in model container [2020-11-28 03:05:32,342 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:05:32,342 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:32" (2/3) ... [2020-11-28 03:05:32,342 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6aca981f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:05:32, skipping insertion in model container [2020-11-28 03:05:32,342 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:05:32,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:32" (3/3) ... [2020-11-28 03:05:32,344 INFO L373 chiAutomizerObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2020-11-28 03:05:32,390 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:05:32,390 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:05:32,390 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:05:32,390 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:05:32,390 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:05:32,390 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:05:32,390 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:05:32,390 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:05:32,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 03:05:32,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:05:32,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:05:32,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:05:32,420 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:05:32,420 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:05:32,421 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:05:32,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-28 03:05:32,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:05:32,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:05:32,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:05:32,422 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:05:32,422 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:05:32,429 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := 12;main_~y~0 := 0;main_~z~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L14-2true [2020-11-28 03:05:32,430 INFO L796 eck$LassoCheckResult]: Loop: 5#L14-2true assume !!(main_~z~0 > 0);main_~x~0 := 1 + main_~x~0;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_~z~0 - 1; 5#L14-2true [2020-11-28 03:05:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:05:32,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:32,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013296344] [2020-11-28 03:05:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:32,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:32,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:32,538 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:05:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-28 03:05:32,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:32,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045026067] [2020-11-28 03:05:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:32,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:32,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:32,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:05:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:05:32,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:05:32,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149141452] [2020-11-28 03:05:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:05:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:32,591 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:05:32,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:05:32,605 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:05:32,742 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-28 03:05:32,806 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:05:32,807 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:05:32,807 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:05:32,807 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:05:32,807 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:05:32,807 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:32,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:05:32,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:05:32,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c_Iteration1_Loop [2020-11-28 03:05:32,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:05:32,808 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:05:32,827 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 03:05:32,840 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 03:05:32,853 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 03:05:32,953 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:05:32,954 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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 03:05:32,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:05:32,962 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:32,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:05:32,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:05:33,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:05:33,012 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1}, {ULTIMATE.start_main_~y~0=-8}, {ULTIMATE.start_main_~y~0=6}] Lambdas: [9, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:33,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:05:33,038 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:33,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:05:33,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:05:33,118 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:05:33,120 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:05:33,120 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:05:33,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:05:33,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:05:33,120 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:05:33,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:33,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:05:33,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:05:33,121 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c_Iteration1_Loop [2020-11-28 03:05:33,121 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:05:33,121 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:05:33,123 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 03:05:33,136 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 03:05:33,149 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 03:05:33,234 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:05:33,238 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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 03:05:33,250 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 03:05:33,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:05:33,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:05:33,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:05:33,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:05:33,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:05:33,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:05:33,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:33,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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) [2020-11-28 03:05:33,304 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 03:05:33,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:05:33,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:05:33,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:05:33,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:05:33,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:05:33,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:05:33,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:05:33,311 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:05:33,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:05:33,315 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6babe7cc-9b43-43b6-9cd0-1596e6a8836c/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 03:05:33,322 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:05:33,323 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:05:33,324 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:05:33,324 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-11-28 03:05:33,361 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:05:33,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:05:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:33,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:05:33,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:05:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:05:33,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:05:33,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:05:33,427 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 03:05:33,442 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 03:05:33,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states. Second operand 2 states. [2020-11-28 03:05:33,487 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 03:05:33,489 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 03:05:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:05:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 03:05:33,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2020-11-28 03:05:33,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:05:33,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 03:05:33,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:05:33,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:05:33,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:05:33,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-28 03:05:33,512 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:05:33,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2020-11-28 03:05:33,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:05:33,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:05:33,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:05:33,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:05:33,517 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:05:33,517 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:05:33,517 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:05:33,517 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:05:33,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:05:33,517 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:05:33,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:05:33,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:05:33 BoogieIcfgContainer [2020-11-28 03:05:33,523 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:05:33,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:05:33,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:05:33,524 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:05:33,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:32" (3/4) ... [2020-11-28 03:05:33,527 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:05:33,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:05:33,529 INFO L168 Benchmark]: Toolchain (without parser) took 1771.76 ms. Allocated memory is still 123.7 MB. Free memory was 90.3 MB in the beginning and 96.4 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:33,531 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:33,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.27 ms. Allocated memory is still 123.7 MB. Free memory was 90.1 MB in the beginning and 100.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:33,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 123.7 MB. Free memory was 100.4 MB in the beginning and 99.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:33,535 INFO L168 Benchmark]: Boogie Preprocessor took 22.50 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 98.4 MB in the end (delta: 665.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:33,536 INFO L168 Benchmark]: RCFGBuilder took 171.59 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 90.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:05:33,536 INFO L168 Benchmark]: BuchiAutomizer took 1187.12 ms. Allocated memory is still 123.7 MB. Free memory was 90.6 MB in the beginning and 97.2 MB in the end (delta: -6.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:33,538 INFO L168 Benchmark]: Witness Printer took 3.60 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 96.4 MB in the end (delta: 802.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:05:33,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.27 ms. Allocated memory is still 123.7 MB. Free memory was 90.1 MB in the beginning and 100.4 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 37.01 ms. Allocated memory is still 123.7 MB. Free memory was 100.4 MB in the beginning and 99.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.50 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 98.4 MB in the end (delta: 665.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 171.59 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 90.6 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1187.12 ms. Allocated memory is still 123.7 MB. Free memory was 90.6 MB in the beginning and 97.2 MB in the end (delta: -6.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.60 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 96.4 MB in the end (delta: 802.5 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 z and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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 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: inital20 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...