./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/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 7757e3f263599cd02799bfad01adb3bcaa895e82 .......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:46:49,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:46:49,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:46:49,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:46:49,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:46:49,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:46:49,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:46:49,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:46:49,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:46:49,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:46:49,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:46:49,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:46:49,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:46:49,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:46:49,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:46:49,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:46:49,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:46:49,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:46:49,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:46:49,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:46:49,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:46:49,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:46:49,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:46:49,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:46:49,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:46:49,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:46:49,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:46:49,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:46:49,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:46:49,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:46:49,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:46:49,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:46:49,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:46:49,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:46:49,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:46:49,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:46:49,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:46:49,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:46:49,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:46:49,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:46:49,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:46:49,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-15 20:46:49,300 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:46:49,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:46:49,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:46:49,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:46:49,302 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:46:49,302 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 20:46:49,302 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 20:46:49,303 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 20:46:49,303 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 20:46:49,303 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 20:46:49,303 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 20:46:49,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:46:49,304 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:46:49,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:46:49,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:46:49,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:46:49,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:46:49,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 20:46:49,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 20:46:49,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 20:46:49,305 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:46:49,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:46:49,306 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 20:46:49,306 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:46:49,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 20:46:49,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:46:49,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:46:49,307 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 20:46:49,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:46:49,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:46:49,308 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 20:46:49,316 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 20:46:49,316 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_62ded6b1-2754-4270-a40a-3f9d371af4af/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 -> 7757e3f263599cd02799bfad01adb3bcaa895e82 [2019-11-15 20:46:49,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:46:49,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:46:49,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:46:49,391 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:46:49,392 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:46:49,393 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2019-11-15 20:46:49,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/data/5722bbebf/af000d3334ae45c7a18e996bb35858c3/FLAG64f23049d [2019-11-15 20:46:49,841 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:46:49,841 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2019-11-15 20:46:49,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/data/5722bbebf/af000d3334ae45c7a18e996bb35858c3/FLAG64f23049d [2019-11-15 20:46:49,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/bin/uautomizer/data/5722bbebf/af000d3334ae45c7a18e996bb35858c3 [2019-11-15 20:46:49,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:46:49,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:46:49,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:46:49,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:46:49,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:46:49,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:46:49" (1/1) ... [2019-11-15 20:46:49,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570bd419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:49, skipping insertion in model container [2019-11-15 20:46:49,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:46:49" (1/1) ... [2019-11-15 20:46:49,881 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:46:49,898 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:46:50,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:46:50,115 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:46:50,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:46:50,140 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:46:50,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50 WrapperNode [2019-11-15 20:46:50,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:46:50,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:46:50,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:46:50,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:46:50,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:46:50,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:46:50,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:46:50,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:46:50,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... [2019-11-15 20:46:50,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:46:50,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:46:50,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:46:50,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:46:50,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/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 [2019-11-15 20:46:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-15 20:46:50,247 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-15 20:46:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:46:50,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:46:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2019-11-15 20:46:50,248 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2019-11-15 20:46:50,395 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:46:50,395 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-15 20:46:50,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:46:50 BoogieIcfgContainer [2019-11-15 20:46:50,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:46:50,397 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 20:46:50,397 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 20:46:50,399 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 20:46:50,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:46:50,400 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 08:46:49" (1/3) ... [2019-11-15 20:46:50,401 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59dc0aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:46:50, skipping insertion in model container [2019-11-15 20:46:50,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:46:50,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:46:50" (2/3) ... [2019-11-15 20:46:50,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59dc0aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:46:50, skipping insertion in model container [2019-11-15 20:46:50,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:46:50,402 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:46:50" (3/3) ... [2019-11-15 20:46:50,404 INFO L371 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-1.c [2019-11-15 20:46:50,447 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 20:46:50,447 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 20:46:50,447 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 20:46:50,447 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:46:50,448 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:46:50,448 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 20:46:50,448 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:46:50,449 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 20:46:50,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-15 20:46:50,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-15 20:46:50,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:46:50,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:46:50,489 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 20:46:50,489 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:46:50,489 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 20:46:50,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-15 20:46:50,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-15 20:46:50,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:46:50,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:46:50,492 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 20:46:50,492 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:46:50,498 INFO L791 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res; 12#L21true call f(4);< 17#fENTRYtrue [2019-11-15 20:46:50,498 INFO L793 eck$LassoCheckResult]: Loop: 17#fENTRYtrue ~n := #in~n; 9#L7true assume !(~n < 3);#t~post2 := ~n;~n := #t~post2 - 1;havoc #t~post2; 3#L9true call f2(~n);< 7#f2ENTRYtrue ~n := #in~n; 16#L14true assume !(~n < 3);#t~post3 := ~n;~n := #t~post3 - 1;havoc #t~post3; 11#L16true call f(~n);< 17#fENTRYtrue [2019-11-15 20:46:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1297, now seen corresponding path program 1 times [2019-11-15 20:46:50,508 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:50,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728198894] [2019-11-15 20:46:50,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:50,509 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:50,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:50,582 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:46:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:50,584 INFO L82 PathProgramCache]: Analyzing trace with hash 891927781, now seen corresponding path program 1 times [2019-11-15 20:46:50,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:50,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671715980] [2019-11-15 20:46:50,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:50,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:50,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:50,610 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:46:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash 45463029, now seen corresponding path program 1 times [2019-11-15 20:46:50,612 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:46:50,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109705320] [2019-11-15 20:46:50,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:50,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:46:50,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:46:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:46:50,632 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:46:50,860 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:46:50,861 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:46:50,861 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:46:50,861 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:46:50,861 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:46:50,862 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:46:50,862 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:46:50,862 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:46:50,862 INFO L131 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2019-11-15 20:46:50,862 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:46:50,863 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:46:50,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:50,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:50,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:50,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:50,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:50,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:50,974 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:46:50,975 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/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) [2019-11-15 20:46:50,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:46:50,992 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 [2019-11-15 20:46:51,001 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:46:51,001 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#t~post3=0} Honda state: {f2_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62ded6b1-2754-4270-a40a-3f9d371af4af/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) [2019-11-15 20:46:51,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:46:51,017 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_62ded6b1-2754-4270-a40a-3f9d371af4af/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) [2019-11-15 20:46:51,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:46:51,038 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:46:51,094 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:46:51,096 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:46:51,096 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:46:51,096 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:46:51,096 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:46:51,096 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:46:51,097 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:46:51,097 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:46:51,097 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:46:51,098 INFO L131 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2019-11-15 20:46:51,098 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:46:51,098 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:46:51,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:51,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:51,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:51,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:51,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:51,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:46:51,208 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:46:51,213 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:46:51,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 20:46:51,216 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:46:51,216 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:46:51,218 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:46:51,218 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:46:51,218 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:46:51,223 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:46:51,223 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:46:51,237 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:46:51,244 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:46:51,248 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 20:46:51,250 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:46:51,251 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:46:51,251 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:46:51,253 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2019-11-15 20:46:51,256 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:46:51,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:46:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:51,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:46:51,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:46:51,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 20:46:51,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:46:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:46:51,463 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-15 20:46:51,464 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 7 states. [2019-11-15 20:46:51,714 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 7 states. Result 55 states and 61 transitions. Complement of second has 26 states. [2019-11-15 20:46:51,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2019-11-15 20:46:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 20:46:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2019-11-15 20:46:51,720 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-15 20:46:51,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:46:51,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-15 20:46:51,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:46:51,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 2 letters. Loop has 12 letters. [2019-11-15 20:46:51,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:46:51,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 61 transitions. [2019-11-15 20:46:51,741 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:46:51,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 0 states and 0 transitions. [2019-11-15 20:46:51,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 20:46:51,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 20:46:51,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 20:46:51,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 20:46:51,746 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:46:51,746 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:46:51,746 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:46:51,746 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 20:46:51,747 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:46:51,747 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:46:51,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 20:46:51,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 08:46:51 BoogieIcfgContainer [2019-11-15 20:46:51,753 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 20:46:51,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:46:51,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:46:51,754 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:46:51,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:46:50" (3/4) ... [2019-11-15 20:46:51,758 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:46:51,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:46:51,760 INFO L168 Benchmark]: Toolchain (without parser) took 1894.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.7 MB in the beginning and 1.0 GB in the end (delta: -59.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:51,761 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:46:51,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:51,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:46:51,763 INFO L168 Benchmark]: Boogie Preprocessor took 13.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:46:51,763 INFO L168 Benchmark]: RCFGBuilder took 216.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:51,764 INFO L168 Benchmark]: BuchiAutomizer took 1356.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:46:51,764 INFO L168 Benchmark]: Witness Printer took 4.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:46:51,767 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 216.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1356.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 105.2 MB). Peak memory consumption was 105.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 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 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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: 6 SDtfs, 11 SDslu, 8 SDs, 0 SdLazy, 49 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 2 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...