./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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 0.1.24-678e011 [2019-11-20 06:59:44,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:59:44,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:59:44,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:59:44,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:59:44,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:59:44,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:59:44,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:59:44,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:59:44,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:59:44,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:59:44,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:59:44,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:59:44,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:59:44,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:59:44,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:59:44,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:59:44,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:59:44,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:59:44,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:59:44,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:59:44,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:59:44,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:59:44,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:59:44,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:59:44,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:59:44,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:59:44,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:59:44,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:59:44,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:59:44,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:59:44,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:59:44,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:59:44,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:59:44,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:59:44,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:59:44,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:59:44,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:59:44,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:59:44,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:59:44,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:59:44,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 06:59:44,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:59:44,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:59:44,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:59:44,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:59:44,757 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:59:44,757 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 06:59:44,757 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 06:59:44,757 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 06:59:44,758 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 06:59:44,758 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 06:59:44,759 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 06:59:44,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:59:44,759 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:59:44,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 06:59:44,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:59:44,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:59:44,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:59:44,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 06:59:44,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 06:59:44,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 06:59:44,761 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:59:44,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:59:44,761 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 06:59:44,761 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:59:44,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 06:59:44,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:59:44,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:59:44,762 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 06:59:44,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:59:44,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:59:44,763 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 06:59:44,763 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 06:59:44,764 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_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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 [2019-11-20 06:59:44,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:59:44,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:59:45,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:59:45,009 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:59:45,010 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:59:45,010 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2019-11-20 06:59:45,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/data/61812b054/501f177ee154471e88f6510deddcbe3f/FLAG6342b244c [2019-11-20 06:59:45,570 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:59:45,570 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2019-11-20 06:59:45,577 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/data/61812b054/501f177ee154471e88f6510deddcbe3f/FLAG6342b244c [2019-11-20 06:59:45,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/data/61812b054/501f177ee154471e88f6510deddcbe3f [2019-11-20 06:59:45,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:59:45,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:59:45,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:59:45,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:59:45,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:59:45,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:45" (1/1) ... [2019-11-20 06:59:45,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6faa9972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:45, skipping insertion in model container [2019-11-20 06:59:45,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:59:45" (1/1) ... [2019-11-20 06:59:45,928 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:59:45,942 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:59:46,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:59:46,095 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:59:46,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:59:46,202 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:59:46,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46 WrapperNode [2019-11-20 06:59:46,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:59:46,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:59:46,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:59:46,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:59:46,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:59:46,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:59:46,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:59:46,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:59:46,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... [2019-11-20 06:59:46,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:59:46,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:59:46,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:59:46,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:59:46,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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 [2019-11-20 06:59:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-11-20 06:59:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-11-20 06:59:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:59:46,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:59:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2019-11-20 06:59:46,343 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2019-11-20 06:59:46,501 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:59:46,501 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 06:59:46,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:46 BoogieIcfgContainer [2019-11-20 06:59:46,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:59:46,503 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 06:59:46,504 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 06:59:46,507 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 06:59:46,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 06:59:46,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:59:45" (1/3) ... [2019-11-20 06:59:46,510 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24a4678f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:59:46, skipping insertion in model container [2019-11-20 06:59:46,510 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 06:59:46,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:59:46" (2/3) ... [2019-11-20 06:59:46,511 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24a4678f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:59:46, skipping insertion in model container [2019-11-20 06:59:46,511 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 06:59:46,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:46" (3/3) ... [2019-11-20 06:59:46,513 INFO L371 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-1.c [2019-11-20 06:59:46,586 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 06:59:46,586 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 06:59:46,586 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 06:59:46,587 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:59:46,587 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:59:46,587 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 06:59:46,587 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:59:46,587 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 06:59:46,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-20 06:59:46,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 06:59:46,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 06:59:46,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 06:59:46,639 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 06:59:46,639 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-20 06:59:46,639 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 06:59:46,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-20 06:59:46,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 06:59:46,642 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 06:59:46,642 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 06:59:46,642 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 06:59:46,642 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-20 06:59:46,649 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res; 12#L21true call f(4);< 17#fENTRYtrue [2019-11-20 06:59:46,649 INFO L796 eck$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 [2019-11-20 06:59:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:59:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1297, now seen corresponding path program 1 times [2019-11-20 06:59:46,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:59:46,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871572277] [2019-11-20 06:59:46,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:59:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:46,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:59:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:59:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash 891927781, now seen corresponding path program 1 times [2019-11-20 06:59:46,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:59:46,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656619215] [2019-11-20 06:59:46,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:59:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:46,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:59:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:59:46,793 INFO L82 PathProgramCache]: Analyzing trace with hash 45463029, now seen corresponding path program 1 times [2019-11-20 06:59:46,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:59:46,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852785288] [2019-11-20 06:59:46,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:59:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:59:46,815 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:59:47,075 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 06:59:47,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 06:59:47,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 06:59:47,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 06:59:47,077 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 06:59:47,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 06:59:47,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 06:59:47,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 06:59:47,078 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2019-11-20 06:59:47,078 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 06:59:47,078 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 06:59:47,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,198 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 06:59:47,200 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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) [2019-11-20 06:59:47,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 06:59:47,216 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 [2019-11-20 06:59:47,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 06:59:47,228 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_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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) [2019-11-20 06:59:47,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 06:59:47,237 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_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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) [2019-11-20 06:59:47,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 06:59:47,270 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 [2019-11-20 06:59:47,341 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 06:59:47,343 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 06:59:47,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 06:59:47,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 06:59:47,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 06:59:47,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 06:59:47,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 06:59:47,344 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 06:59:47,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 06:59:47,344 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2019-11-20 06:59:47,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 06:59:47,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 06:59:47,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 06:59:47,419 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 06:59:47,425 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/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 [2019-11-20 06:59:47,439 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 [2019-11-20 06:59:47,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 06:59:47,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 06:59:47,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 06:59:47,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 06:59:47,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 06:59:47,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 06:59:47,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 06:59:47,450 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 06:59:47,455 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 06:59:47,455 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd394f26-a7be-4a3b-84f9-bce85eda15ea/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 06:59:47,466 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 06:59:47,467 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 06:59:47,468 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 06:59:47,468 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2019-11-20 06:59:47,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 06:59:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:59:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:59:47,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 06:59:47,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:59:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:59:47,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 06:59:47,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 06:59:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:59:47,751 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 [2019-11-20 06:59:47,752 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 7 states. [2019-11-20 06:59:48,054 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. [2019-11-20 06:59:48,057 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 [2019-11-20 06:59:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 06:59:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2019-11-20 06:59:48,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-20 06:59:48,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 06:59:48,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-20 06:59:48,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 06:59:48,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 2 letters. Loop has 12 letters. [2019-11-20 06:59:48,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 06:59:48,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 61 transitions. [2019-11-20 06:59:48,087 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 06:59:48,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 0 states and 0 transitions. [2019-11-20 06:59:48,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 06:59:48,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 06:59:48,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 06:59:48,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 06:59:48,093 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:59:48,093 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:59:48,093 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 06:59:48,093 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 06:59:48,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 06:59:48,094 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 06:59:48,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 06:59:48,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:59:48 BoogieIcfgContainer [2019-11-20 06:59:48,101 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 06:59:48,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:59:48,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:59:48,102 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:59:48,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:59:46" (3/4) ... [2019-11-20 06:59:48,106 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 06:59:48,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:59:48,109 INFO L168 Benchmark]: Toolchain (without parser) took 2197.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -63.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:48,111 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:59:48,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:48,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.93 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. [2019-11-20 06:59:48,113 INFO L168 Benchmark]: Boogie Preprocessor took 18.67 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. [2019-11-20 06:59:48,114 INFO L168 Benchmark]: RCFGBuilder took 241.56 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:48,116 INFO L168 Benchmark]: BuchiAutomizer took 1597.75 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: 116.6 MB). Peak memory consumption was 116.6 MB. Max. memory is 11.5 GB. [2019-11-20 06:59:48,117 INFO L168 Benchmark]: Witness Printer took 5.14 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. [2019-11-20 06:59:48,125 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.93 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 18.67 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 241.56 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: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1597.75 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: 116.6 MB). Peak memory consumption was 116.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.14 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 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. 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: 41ms 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...