./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_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/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 [2020-11-29 18:20:40,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:20:40,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:20:40,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:20:40,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:20:40,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:20:40,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:20:40,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:20:40,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:20:40,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:20:40,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:20:40,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:20:40,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:20:40,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:20:40,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:20:40,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:20:40,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:20:40,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:20:40,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:20:40,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:20:40,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:20:40,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:20:40,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:20:40,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:20:40,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:20:40,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:20:40,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:20:40,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:20:40,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:20:40,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:20:40,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:20:40,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:20:40,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:20:40,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:20:40,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:20:40,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:20:40,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:20:40,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:20:40,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:20:40,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:20:40,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:20:40,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:20:40,312 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:20:40,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:20:40,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:20:40,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:20:40,320 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:20:40,320 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:20:40,320 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:20:40,321 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:20:40,321 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:20:40,321 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:20:40,323 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:20:40,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:20:40,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:20:40,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:20:40,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:20:40,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:20:40,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:20:40,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:20:40,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:20:40,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:20:40,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:20:40,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:20:40,327 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:20:40,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:20:40,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:20:40,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:20:40,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:20:40,328 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:20:40,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:20:40,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:20:40,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:20:40,330 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:20:40,331 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:20:40,331 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_71a2c131-0066-4c8b-9df1-75146c60fb99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d5e20d9a05badce6014033a9e9f921320cf457 [2020-11-29 18:20:40,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:20:40,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:20:40,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:20:40,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:20:40,704 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:20:40,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec-1.c [2020-11-29 18:20:40,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/data/e3a5fc455/68d363fc05f94f16ad78101241bd59cb/FLAG142358fe4 [2020-11-29 18:20:41,425 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:20:41,426 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/sv-benchmarks/c/recursive-simple/afterrec-1.c [2020-11-29 18:20:41,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/data/e3a5fc455/68d363fc05f94f16ad78101241bd59cb/FLAG142358fe4 [2020-11-29 18:20:41,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/data/e3a5fc455/68d363fc05f94f16ad78101241bd59cb [2020-11-29 18:20:41,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:20:41,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:20:41,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:20:41,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:20:41,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:20:41,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:20:41" (1/1) ... [2020-11-29 18:20:41,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6d4487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:41, skipping insertion in model container [2020-11-29 18:20:41,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:20:41" (1/1) ... [2020-11-29 18:20:41,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:20:41,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:20:42,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:20:42,037 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:20:42,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:20:42,073 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:20:42,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42 WrapperNode [2020-11-29 18:20:42,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:20:42,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:20:42,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:20:42,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:20:42,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:20:42,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:20:42,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:20:42,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:20:42,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... [2020-11-29 18:20:42,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:20:42,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:20:42,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:20:42,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:20:42,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:42,224 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-29 18:20:42,225 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-29 18:20:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:20:42,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:20:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:20:42,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:20:42,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:20:42,416 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 18:20:42,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:20:42 BoogieIcfgContainer [2020-11-29 18:20:42,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:20:42,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:20:42,419 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:20:42,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:20:42,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:20:42,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:20:41" (1/3) ... [2020-11-29 18:20:42,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5804003e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:20:42, skipping insertion in model container [2020-11-29 18:20:42,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:20:42,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:20:42" (2/3) ... [2020-11-29 18:20:42,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5804003e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:20:42, skipping insertion in model container [2020-11-29 18:20:42,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:20:42,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:20:42" (3/3) ... [2020-11-29 18:20:42,428 INFO L373 chiAutomizerObserver]: Analyzing ICFG afterrec-1.c [2020-11-29 18:20:42,476 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:20:42,476 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:20:42,476 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:20:42,476 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:20:42,476 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:20:42,477 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:20:42,477 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:20:42,477 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:20:42,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-29 18:20:42,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:20:42,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:42,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:42,521 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 18:20:42,522 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:20:42,522 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:20:42,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-29 18:20:42,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 18:20:42,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:20:42,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:20:42,524 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 18:20:42,524 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 18:20:42,532 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 [2020-11-29 18:20:42,532 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 [2020-11-29 18:20:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash 40785, now seen corresponding path program 1 times [2020-11-29 18:20:42,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:42,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552638458] [2020-11-29 18:20:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:42,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:42,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:42,714 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:42,716 INFO L82 PathProgramCache]: Analyzing trace with hash 29933, now seen corresponding path program 1 times [2020-11-29 18:20:42,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:42,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306884848] [2020-11-29 18:20:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:42,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:42,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:42,732 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1215026077, now seen corresponding path program 1 times [2020-11-29 18:20:42,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:20:42,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111005486] [2020-11-29 18:20:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:20:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:42,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:20:42,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:20:42,781 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:20:42,967 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 18:20:43,063 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:20:43,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:20:43,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:20:43,064 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:20:43,065 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:20:43,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:43,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:20:43,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:20:43,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2020-11-29 18:20:43,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:20:43,066 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:20:43,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:43,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:43,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:43,169 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:20:43,170 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:43,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:20:43,182 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:43,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:20:43,195 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_71a2c131-0066-4c8b-9df1-75146c60fb99/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 [2020-11-29 18:20:43,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:20:43,232 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/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 [2020-11-29 18:20:43,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:20:43,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 18:20:43,368 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:20:43,370 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:20:43,370 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:20:43,370 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:20:43,370 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:20:43,370 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:20:43,371 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:43,371 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:20:43,371 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:20:43,371 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2020-11-29 18:20:43,371 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:20:43,372 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:20:43,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:43,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:43,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:20:43,548 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:20:43,553 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/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 [2020-11-29 18:20:43,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:43,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:43,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:43,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:43,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:43,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:43,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:43,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:43,650 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:20:43,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:20:43,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:43,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:43,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:43,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:43,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:43,697 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:43,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:43,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71a2c131-0066-4c8b-9df1-75146c60fb99/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 [2020-11-29 18:20:43,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 18:20:43,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:20:43,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:20:43,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:20:43,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:20:43,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:20:43,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:20:43,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:20:43,741 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:20:43,779 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:20:43,780 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_71a2c131-0066-4c8b-9df1-75146c60fb99/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 [2020-11-29 18:20:43,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:20:43,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:20:43,811 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:20:43,811 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2020-11-29 18:20:43,835 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:20:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:20:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:43,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:20:43,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:20:43,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:20:43,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:20:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:20:44,052 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 [2020-11-29 18:20:44,054 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2020-11-29 18:20:44,204 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. [2020-11-29 18:20:44,205 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 [2020-11-29 18:20:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:20:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2020-11-29 18:20:44,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-29 18:20:44,210 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:44,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-29 18:20:44,210 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:44,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-29 18:20:44,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:20:44,211 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 41 transitions. [2020-11-29 18:20:44,215 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:20:44,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 0 states and 0 transitions. [2020-11-29 18:20:44,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:20:44,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:20:44,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:20:44,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:20:44,219 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:20:44,219 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:20:44,220 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:20:44,220 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:20:44,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:20:44,220 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:20:44,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:20:44,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:20:44 BoogieIcfgContainer [2020-11-29 18:20:44,225 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:20:44,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:20:44,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:20:44,226 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:20:44,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:20:42" (3/4) ... [2020-11-29 18:20:44,229 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:20:44,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:20:44,231 INFO L168 Benchmark]: Toolchain (without parser) took 2446.56 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 38.8 MB in the beginning and 39.4 MB in the end (delta: -570.3 kB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:44,232 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:20:44,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.47 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 38.6 MB in the beginning and 61.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:44,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.98 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 60.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:44,234 INFO L168 Benchmark]: Boogie Preprocessor took 20.87 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 59.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:20:44,235 INFO L168 Benchmark]: RCFGBuilder took 280.50 ms. Allocated memory is still 88.1 MB. Free memory was 59.6 MB in the beginning and 49.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:44,236 INFO L168 Benchmark]: BuchiAutomizer took 1806.54 ms. Allocated memory is still 88.1 MB. Free memory was 49.6 MB in the beginning and 39.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:20:44,237 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 88.1 MB. Free memory was 39.6 MB in the beginning and 39.4 MB in the end (delta: 242.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:20:44,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 51.6 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.47 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 38.6 MB in the beginning and 61.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.98 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 60.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.87 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 59.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 280.50 ms. Allocated memory is still 88.1 MB. Free memory was 59.6 MB in the beginning and 49.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1806.54 ms. Allocated memory is still 88.1 MB. Free memory was 49.6 MB in the beginning and 39.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.75 ms. Allocated memory is still 88.1 MB. Free memory was 39.6 MB in the beginning and 39.4 MB in the end (delta: 242.2 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 \old(n) and consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. 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: 96ms 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...