./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/TerminatorRec02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/TerminatorRec02.c -s /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8c9656c5ef8dceb7982043d8db455c38d2f23147 ................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:26,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:26,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:26,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:26,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:26,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:26,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:26,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:26,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:26,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:26,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:26,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:26,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:26,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:26,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:26,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:26,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:26,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:26,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:26,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:26,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:26,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:26,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:26,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:26,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:26,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:26,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:26,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:26,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:26,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:26,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:26,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:26,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:26,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:26,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:26,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:26,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:26,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:26,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:26,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:26,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:26,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:00:26,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:26,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:26,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:26,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:26,712 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:26,712 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:00:26,712 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:00:26,712 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:00:26,713 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:00:26,713 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:00:26,713 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:00:26,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:26,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:00:26,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:00:26,714 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:26,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:00:26,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:26,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:26,715 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:00:26,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:26,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:26,716 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:00:26,717 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:00:26,717 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/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9656c5ef8dceb7982043d8db455c38d2f23147 [2019-10-22 09:00:26,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:26,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:26,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:26,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:26,758 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:26,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2019-10-22 09:00:26,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/data/46944b7bb/a449f97f54654125a5443d9526aa633d/FLAG359283767 [2019-10-22 09:00:27,209 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:27,209 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2019-10-22 09:00:27,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/data/46944b7bb/a449f97f54654125a5443d9526aa633d/FLAG359283767 [2019-10-22 09:00:27,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/data/46944b7bb/a449f97f54654125a5443d9526aa633d [2019-10-22 09:00:27,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:27,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:27,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:27,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:27,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:27,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16714f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27, skipping insertion in model container [2019-10-22 09:00:27,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,242 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:27,255 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:27,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:27,394 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:27,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:27,492 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:27,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27 WrapperNode [2019-10-22 09:00:27,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:27,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:27,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:27,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:27,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:27,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:27,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:27,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:27,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... [2019-10-22 09:00:27,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:27,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:27,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:27,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:27,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/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 [2019-10-22 09:00:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2019-10-22 09:00:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2019-10-22 09:00:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:27,728 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:27,728 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:00:27,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:27 BoogieIcfgContainer [2019-10-22 09:00:27,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:27,730 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:00:27,730 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:00:27,733 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:00:27,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:27,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:00:27" (1/3) ... [2019-10-22 09:00:27,735 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30ba01c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:27, skipping insertion in model container [2019-10-22 09:00:27,736 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:27,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:27" (2/3) ... [2019-10-22 09:00:27,740 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30ba01c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:00:27, skipping insertion in model container [2019-10-22 09:00:27,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:00:27,741 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:27" (3/3) ... [2019-10-22 09:00:27,742 INFO L371 chiAutomizerObserver]: Analyzing ICFG TerminatorRec02.c [2019-10-22 09:00:27,818 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:00:27,818 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:00:27,818 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:00:27,818 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:27,818 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:27,819 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:00:27,819 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:27,819 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:00:27,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-10-22 09:00:27,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:27,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:27,853 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:27,860 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:00:27,861 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:27,861 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:00:27,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-10-22 09:00:27,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 09:00:27,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:00:27,862 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:00:27,863 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:00:27,863 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:00:27,870 INFO L791 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~x~0, main_~y~1, main_~z~0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L27true assume !(main_~x~0 < 0);main_~y~1 := main_#t~nondet2;havoc main_#t~nondet2; 8#L30true assume !(main_~y~1 < 0);main_~z~0 := main_#t~nondet3;havoc main_#t~nondet3; 12#L33true call main_#t~ret4 := fact(main_~x~0);< 9#factENTRYtrue [2019-10-22 09:00:27,870 INFO L793 eck$LassoCheckResult]: Loop: 9#factENTRYtrue ~x := #in~x; 4#L18true assume ~x > 1; 7#L19true call #t~ret0 := fact(~x - 1);< 9#factENTRYtrue [2019-10-22 09:00:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1205710, now seen corresponding path program 1 times [2019-10-22 09:00:27,896 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:27,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963158228] [2019-10-22 09:00:27,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:27,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:27,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:28,028 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash 29909, now seen corresponding path program 1 times [2019-10-22 09:00:28,029 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:28,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751466429] [2019-10-22 09:00:28,029 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:28,030 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:28,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:28,044 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:28,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1559568360, now seen corresponding path program 1 times [2019-10-22 09:00:28,046 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:28,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243452476] [2019-10-22 09:00:28,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:28,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:28,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:28,068 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:28,134 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:28,135 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:28,135 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:28,135 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:28,135 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:00:28,135 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:28,135 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:28,135 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:28,135 INFO L131 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2019-10-22 09:00:28,136 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:28,136 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:28,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:28,223 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/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) [2019-10-22 09:00:28,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:28,234 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 [2019-10-22 09:00:28,242 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:00:28,243 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~y~0=0} Honda state: {fact_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:28,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:00:28,255 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_51f44571-b5bd-45a0-a631-7dd1dbdf48c7/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) [2019-10-22 09:00:28,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:00:28,267 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 [2019-10-22 09:00:28,310 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:00:28,312 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:00:28,312 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:00:28,312 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:00:28,312 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:00:28,312 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:00:28,312 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:00:28,313 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:00:28,313 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:00:28,313 INFO L131 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2019-10-22 09:00:28,313 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:00:28,313 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:00:28,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:00:28,374 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:00:28,379 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:00:28,381 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 [2019-10-22 09:00:28,382 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:28,382 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:28,383 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:28,383 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:28,383 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:28,386 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:28,386 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:28,391 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:28,392 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 [2019-10-22 09:00:28,393 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:28,393 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:28,393 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:28,393 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:28,393 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:28,394 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:28,394 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:28,395 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:00:28,395 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 [2019-10-22 09:00:28,398 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:00:28,398 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:00:28,398 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:00:28,398 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:00:28,398 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:00:28,399 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:00:28,399 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:00:28,407 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:00:28,412 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:00:28,412 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:00:28,414 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:00:28,414 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:00:28,414 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:00:28,415 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~x) = 1*fact_#in~x Supporting invariants [] [2019-10-22 09:00:28,418 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:00:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:28,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:28,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:28,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:00:28,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:28,530 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 09:00:28,532 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2019-10-22 09:00:28,642 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 32 states and 37 transitions. Complement of second has 12 states. [2019-10-22 09:00:28,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 09:00:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:00:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-10-22 09:00:28,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 09:00:28,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:28,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2019-10-22 09:00:28,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:28,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2019-10-22 09:00:28,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:00:28,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2019-10-22 09:00:28,655 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:28,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-10-22 09:00:28,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:00:28,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:00:28,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:00:28,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:00:28,661 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:28,661 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:28,661 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:00:28,661 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:00:28,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:00:28,662 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:00:28,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:00:28,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:00:28 BoogieIcfgContainer [2019-10-22 09:00:28,667 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:00:28,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:28,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:28,668 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:28,669 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:27" (3/4) ... [2019-10-22 09:00:28,672 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:28,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:28,677 INFO L168 Benchmark]: Toolchain (without parser) took 1448.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -74.7 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:28,679 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:28,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:28,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.48 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. [2019-10-22 09:00:28,681 INFO L168 Benchmark]: Boogie Preprocessor took 12.45 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. [2019-10-22 09:00:28,681 INFO L168 Benchmark]: RCFGBuilder took 195.28 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:28,682 INFO L168 Benchmark]: BuchiAutomizer took 937.83 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: 82.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:28,682 INFO L168 Benchmark]: Witness Printer took 6.53 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. [2019-10-22 09:00:28,685 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.48 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 12.45 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 195.28 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: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 937.83 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: 82.8 MB). Peak memory consumption was 82.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.53 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(x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 10 SDtfs, 13 SDslu, 2 SDs, 0 SdLazy, 18 SolverSat, 3 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 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...