./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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 32bit --witnessprinter.graph.data.programhash 20d5e20d9a05badce6014033a9e9f921320cf457 ...................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:09:14,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:14,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:14,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:14,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:15,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:15,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:15,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:15,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:15,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:15,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:15,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:15,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:15,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:15,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:15,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:15,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:15,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:15,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:15,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:15,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:15,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:15,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:15,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:15,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:15,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:15,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:15,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:15,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:15,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:15,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:15,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:15,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:15,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:15,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:15,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:15,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:15,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:15,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:15,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:15,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:15,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:09:15,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:15,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:15,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:15,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:15,107 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:15,107 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:09:15,108 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:09:15,108 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:09:15,108 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:09:15,109 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:09:15,109 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:09:15,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:15,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:09:15,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:09:15,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:15,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:09:15,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:15,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:09:15,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:09:15,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:09:15,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:09:15,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:09:15,112 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:09:15,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:15,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:09:15,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:15,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:15,114 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:09:15,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:15,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:15,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:15,115 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:09:15,116 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:09:15,116 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_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d5e20d9a05badce6014033a9e9f921320cf457 [2020-11-28 03:09:15,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:15,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:15,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:15,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:15,500 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:15,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec-1.c [2020-11-28 03:09:15,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/data/75a509b53/5343c4bdbd86414b911636fc0080a776/FLAGcc86885ee [2020-11-28 03:09:16,137 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:16,137 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/sv-benchmarks/c/recursive-simple/afterrec-1.c [2020-11-28 03:09:16,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/data/75a509b53/5343c4bdbd86414b911636fc0080a776/FLAGcc86885ee [2020-11-28 03:09:16,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/data/75a509b53/5343c4bdbd86414b911636fc0080a776 [2020-11-28 03:09:16,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:16,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:09:16,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:16,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:16,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:16,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ed3290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16, skipping insertion in model container [2020-11-28 03:09:16,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:16,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:16,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:16,718 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:16,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:16,781 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:16,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16 WrapperNode [2020-11-28 03:09:16,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:16,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:16,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:09:16,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:09:16,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:16,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:16,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:16,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:16,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... [2020-11-28 03:09:16,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:16,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:16,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:16,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:16,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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 03:09:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-28 03:09:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-28 03:09:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:17,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:17,287 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:09:17,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:17 BoogieIcfgContainer [2020-11-28 03:09:17,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:17,291 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:09:17,299 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:09:17,304 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:09:17,305 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:09:17,305 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:09:16" (1/3) ... [2020-11-28 03:09:17,307 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f1f4c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:09:17, skipping insertion in model container [2020-11-28 03:09:17,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:09:17,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:16" (2/3) ... [2020-11-28 03:09:17,308 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f1f4c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:09:17, skipping insertion in model container [2020-11-28 03:09:17,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:09:17,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:17" (3/3) ... [2020-11-28 03:09:17,310 INFO L373 chiAutomizerObserver]: Analyzing ICFG afterrec-1.c [2020-11-28 03:09:17,398 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:09:17,398 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:09:17,398 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:09:17,398 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:17,398 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:17,399 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:09:17,399 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:17,399 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:09:17,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-28 03:09:17,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:09:17,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:09:17,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:09:17,450 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:09:17,450 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:09:17,450 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:09:17,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-28 03:09:17,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:09:17,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:09:17,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:09:17,453 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:09:17,454 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:09:17,462 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 8#L-1true havoc main_#res; 14#L13true call f(4);< 10#fENTRYtrue [2020-11-28 03:09:17,462 INFO L796 eck$LassoCheckResult]: Loop: 10#fENTRYtrue ~n := #in~n; 7#L6true assume !(~n < 3);#t~post7 := ~n;~n := #t~post7 - 1;havoc #t~post7; 4#L8true call f(~n);< 10#fENTRYtrue [2020-11-28 03:09:17,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:17,470 INFO L82 PathProgramCache]: Analyzing trace with hash 40785, now seen corresponding path program 1 times [2020-11-28 03:09:17,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:17,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360382735] [2020-11-28 03:09:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:17,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:17,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:17,646 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash 29933, now seen corresponding path program 1 times [2020-11-28 03:09:17,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:17,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586198701] [2020-11-28 03:09:17,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:17,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:17,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:17,666 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1215026077, now seen corresponding path program 1 times [2020-11-28 03:09:17,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:17,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637781477] [2020-11-28 03:09:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:17,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:17,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:17,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:17,891 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:09:17,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:09:17,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:09:17,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:09:17,892 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:09:17,892 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:17,892 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:09:17,892 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:09:17,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2020-11-28 03:09:17,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:09:17,893 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:09:17,913 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 03:09:17,922 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 03:09:17,938 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 03:09:18,057 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:09:18,058 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:18,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:18,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:09:18,069 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:09:18,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#t~post7=0} Honda state: {f_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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 03:09:18,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:18,130 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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 03:09:18,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:09:18,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:09:18,249 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:09:18,251 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:09:18,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:09:18,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:09:18,251 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:09:18,251 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:09:18,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:18,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:09:18,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:09:18,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2020-11-28 03:09:18,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:09:18,252 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:09:18,254 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 03:09:18,264 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 03:09:18,269 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 03:09:18,422 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-28 03:09:18,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:09:18,428 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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 03:09:18,495 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 03:09:18,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:18,498 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:09:18,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:18,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:18,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:18,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:09:18,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:09:18,504 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:18,534 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 03:09:18,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:18,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:09:18,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:18,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:18,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:18,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:09:18,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:09:18,540 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/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 03:09:18,570 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 03:09:18,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:18,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:09:18,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:18,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:18,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:18,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:09:18,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:09:18,578 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:09:18,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:09:18,589 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_e9f8129d-3186-48cc-89bb-0a67eb4f2e24/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:09:18,616 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:09:18,616 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:09:18,616 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:09:18,617 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:18,645 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:09:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:18,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:09:18,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:18,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:09:18,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:18,822 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 03:09:18,840 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:09:18,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2020-11-28 03:09:18,989 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 39 states and 41 transitions. Complement of second has 19 states. [2020-11-28 03:09:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:09:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:09:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2020-11-28 03:09:18,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-28 03:09:18,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:18,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:09:18,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:19,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-28 03:09:19,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:19,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 41 transitions. [2020-11-28 03:09:19,006 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:09:19,008 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 0 states and 0 transitions. [2020-11-28 03:09:19,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:09:19,009 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:09:19,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:09:19,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:09:19,010 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:19,010 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:19,010 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:19,010 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:09:19,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:09:19,010 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:09:19,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:09:19,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:09:19 BoogieIcfgContainer [2020-11-28 03:09:19,016 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:09:19,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:19,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:19,017 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:19,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:17" (3/4) ... [2020-11-28 03:09:19,020 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:09:19,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:19,022 INFO L168 Benchmark]: Toolchain (without parser) took 2531.43 ms. Allocated memory is still 92.3 MB. Free memory was 58.5 MB in the beginning and 32.0 MB in the end (delta: 26.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:19,023 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 48.6 MB in the end (delta: 22.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:19,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.19 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 70.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:19,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 92.3 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:19,026 INFO L168 Benchmark]: Boogie Preprocessor took 20.60 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 68.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:19,026 INFO L168 Benchmark]: RCFGBuilder took 444.20 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 58.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:19,027 INFO L168 Benchmark]: BuchiAutomizer took 1725.68 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 32.5 MB in the end (delta: 25.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:19,028 INFO L168 Benchmark]: Witness Printer took 3.71 ms. Allocated memory is still 92.3 MB. Free memory is still 32.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:19,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 48.6 MB in the end (delta: 22.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.19 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 70.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 92.3 MB. Free memory was 70.4 MB in the beginning and 69.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.60 ms. Allocated memory is still 92.3 MB. Free memory was 69.1 MB in the beginning and 68.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 444.20 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 58.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1725.68 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 32.5 MB in the end (delta: 25.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.71 ms. Allocated memory is still 92.3 MB. Free memory is still 32.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: 5 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf90 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 64ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 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...