./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.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_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/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 05dc78db4ae9adf9f9f4e8e18548ea9c0db83e87 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 00:01:58,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:01:58,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:01:58,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:01:58,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:01:58,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:01:58,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:01:58,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:01:58,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:01:58,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:01:58,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:01:58,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:01:58,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:01:58,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:01:58,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:01:58,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:01:58,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:01:58,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:01:58,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:01:58,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:01:58,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:01:58,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:01:58,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:01:58,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:01:58,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:01:58,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:01:58,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:01:58,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:01:58,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:01:58,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:01:58,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:01:58,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:01:58,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:01:58,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:01:58,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:01:58,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:01:58,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:01:58,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:01:58,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:01:58,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:01:58,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:01:58,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 00:01:58,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:01:58,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:01:58,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:01:58,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:01:58,755 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:01:58,755 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 00:01:58,755 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 00:01:58,756 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 00:01:58,756 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 00:01:58,756 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 00:01:58,756 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 00:01:58,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:01:58,756 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:01:58,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:01:58,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:01:58,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:01:58,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:01:58,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 00:01:58,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 00:01:58,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 00:01:58,758 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:01:58,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:01:58,758 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 00:01:58,758 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:01:58,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 00:01:58,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:01:58,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:01:58,759 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 00:01:58,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:01:58,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:01:58,760 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 00:01:58,760 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 00:01:58,760 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_dcdf2a3d-f348-4989-ba03-c22ab6274e37/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 -> 05dc78db4ae9adf9f9f4e8e18548ea9c0db83e87 [2019-11-20 00:01:58,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:01:58,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:01:58,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:01:58,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:01:58,908 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:01:58,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2019-11-20 00:01:58,952 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/data/793d1f3bd/754814041da34cda9851b34d287f4d34/FLAGc5645d83b [2019-11-20 00:01:59,360 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:01:59,360 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2019-11-20 00:01:59,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/data/793d1f3bd/754814041da34cda9851b34d287f4d34/FLAGc5645d83b [2019-11-20 00:01:59,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/data/793d1f3bd/754814041da34cda9851b34d287f4d34 [2019-11-20 00:01:59,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:01:59,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:01:59,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:01:59,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:01:59,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:01:59,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15dfff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59, skipping insertion in model container [2019-11-20 00:01:59,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,402 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:01:59,417 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:01:59,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:01:59,541 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:01:59,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:01:59,621 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:01:59,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59 WrapperNode [2019-11-20 00:01:59,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:01:59,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:01:59,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:01:59,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:01:59,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:01:59,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:01:59,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:01:59,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:01:59,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... [2019-11-20 00:01:59,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:01:59,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:01:59,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:01:59,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:01:59,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/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 00:01:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:01:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:01:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-11-20 00:01:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-11-20 00:01:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-11-20 00:01:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-11-20 00:01:59,892 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:01:59,893 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 00:01:59,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:59 BoogieIcfgContainer [2019-11-20 00:01:59,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:01:59,895 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 00:01:59,895 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 00:01:59,898 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 00:01:59,898 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:01:59,899 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:01:59" (1/3) ... [2019-11-20 00:01:59,900 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1177e686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:01:59, skipping insertion in model container [2019-11-20 00:01:59,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:01:59,900 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:01:59" (2/3) ... [2019-11-20 00:01:59,900 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1177e686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:01:59, skipping insertion in model container [2019-11-20 00:01:59,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:01:59,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:59" (3/3) ... [2019-11-20 00:01:59,902 INFO L371 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_2-2.c [2019-11-20 00:01:59,942 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 00:01:59,942 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 00:01:59,942 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 00:01:59,942 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:01:59,942 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:01:59,943 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 00:01:59,943 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:01:59,943 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 00:01:59,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-11-20 00:01:59,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 00:01:59,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:01:59,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:01:59,985 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 00:01:59,985 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:01:59,986 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 00:01:59,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-11-20 00:01:59,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 00:01:59,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:01:59,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:01:59,989 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 00:01:59,990 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:01:59,998 INFO L794 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 2; 16#L37true call main_#t~ret4 := fibo1(main_~x~0);< 24#fibo1ENTRYtrue [2019-11-20 00:01:59,999 INFO L796 eck$LassoCheckResult]: Loop: 24#fibo1ENTRYtrue ~n := #in~n; 12#L8true assume !(~n < 1); 4#L10true assume !(1 == ~n); 18#L13true call #t~ret0 := fibo2(~n - 1);< 10#fibo2ENTRYtrue ~n := #in~n; 27#L18true assume !(~n < 1); 25#L20true assume !(1 == ~n); 3#L23true call #t~ret2 := fibo1(~n - 1);< 24#fibo1ENTRYtrue [2019-11-20 00:02:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:02:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1034, now seen corresponding path program 1 times [2019-11-20 00:02:00,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:02:00,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432491792] [2019-11-20 00:02:00,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:02:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:02:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:02:00,100 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:02:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:02:00,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1816359656, now seen corresponding path program 1 times [2019-11-20 00:02:00,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:02:00,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624693381] [2019-11-20 00:02:00,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:02:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:02:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:02:00,119 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:02:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:02:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1268294159, now seen corresponding path program 1 times [2019-11-20 00:02:00,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:02:00,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628675685] [2019-11-20 00:02:00,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:02:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:02:00,279 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 00:02:00,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628675685] [2019-11-20 00:02:00,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:02:00,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 00:02:00,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032369434] [2019-11-20 00:02:00,547 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:02:00,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:02:00,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:02:00,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:02:00,549 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:02:00,550 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:02:00,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:02:00,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-2.c_Iteration1_Loop [2019-11-20 00:02:00,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:02:00,552 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:02:00,566 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 00:02:00,570 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 00:02:00,573 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 00:02:00,575 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 00:02:00,579 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 00:02:00,581 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 00:02:00,583 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 00:02:00,589 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 00:02:00,594 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 00:02:00,598 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 00:02:00,689 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:02:00,689 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,708 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,708 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/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 00:02:00,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,718 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 [2019-11-20 00:02:00,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,747 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,747 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/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 00:02:00,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,757 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret2=0} Honda state: {fibo2_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/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 00:02:00,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,768 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,768 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret3=0} Honda state: {fibo2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,791 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,805 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret1=0} Honda state: {fibo1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:02:00,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:02:00,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret0=0} Honda state: {fibo1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:00,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:02:00,841 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:00,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:02:00,861 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,928 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:02:00,930 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:02:00,930 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:02:00,930 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:02:00,930 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:02:00,931 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:02:00,931 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:00,931 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:02:00,931 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:02:00,931 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-2.c_Iteration1_Loop [2019-11-20 00:02:00,931 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:02:00,931 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:02:00,933 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 00:02:00,935 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 00:02:00,937 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 00:02:00,940 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 00:02:00,942 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 00:02:00,945 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 00:02:00,947 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 00:02:00,949 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 00:02:00,952 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 00:02:00,963 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 00:02:01,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:02:01,036 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:01,042 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 00:02:01,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,048 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,053 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:01,074 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 00:02:01,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,079 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:01,100 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 00:02:01,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,105 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:01,122 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 00:02:01,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,133 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:01,150 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 00:02:01,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,161 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,177 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 00:02:01,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:02:01,182 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,189 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 00:02:01,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:02:01,192 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,197 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 00:02:01,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:02:01,201 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:02:01,226 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 00:02:01,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:02:01,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:02:01,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:02:01,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:02:01,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:02:01,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:02:01,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,233 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:02:01,236 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 00:02:01,236 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_dcdf2a3d-f348-4989-ba03-c22ab6274e37/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:02:01,254 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:02:01,254 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:02:01,254 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:02:01,255 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2019-11-20 00:02:01,258 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:02:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:02:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:02:01,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:02:01,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:02:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:02:01,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 00:02:01,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:02:01,381 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 00:02:01,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 00:02:01,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 6 states. [2019-11-20 00:02:01,661 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states.. Second operand 6 states. Result 83 states and 115 transitions. Complement of second has 24 states. [2019-11-20 00:02:01,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 00:02:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 00:02:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-11-20 00:02:01,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2019-11-20 00:02:01,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:02:01,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-20 00:02:01,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:02:01,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 2 letters. Loop has 16 letters. [2019-11-20 00:02:01,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:02:01,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 115 transitions. [2019-11-20 00:02:01,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 00:02:01,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 60 states and 81 transitions. [2019-11-20 00:02:01,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-11-20 00:02:01,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2019-11-20 00:02:01,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2019-11-20 00:02:01,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:02:01,688 INFO L688 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2019-11-20 00:02:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2019-11-20 00:02:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-11-20 00:02:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-20 00:02:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2019-11-20 00:02:01,735 INFO L711 BuchiCegarLoop]: Abstraction has 53 states and 71 transitions. [2019-11-20 00:02:01,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:02:01,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 00:02:01,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:02:01,739 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand 8 states. [2019-11-20 00:02:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:02:01,850 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-20 00:02:01,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 00:02:01,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 17 transitions. [2019-11-20 00:02:01,852 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:02:01,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2019-11-20 00:02:01,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 00:02:01,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 00:02:01,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 00:02:01,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:02:01,853 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:02:01,853 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:02:01,853 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:02:01,853 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 00:02:01,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:02:01,853 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:02:01,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 00:02:01,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:02:01 BoogieIcfgContainer [2019-11-20 00:02:01,858 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 00:02:01,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:02:01,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:02:01,859 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:02:01,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:01:59" (3/4) ... [2019-11-20 00:02:01,862 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 00:02:01,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:02:01,865 INFO L168 Benchmark]: Toolchain (without parser) took 2478.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.7 MB in the beginning and 881.8 MB in the end (delta: 63.0 MB). Peak memory consumption was 190.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:02:01,865 INFO L168 Benchmark]: CDTParser took 0.21 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. [2019-11-20 00:02:01,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:02:01,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.18 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 00:02:01,867 INFO L168 Benchmark]: Boogie Preprocessor took 12.31 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 00:02:01,867 INFO L168 Benchmark]: RCFGBuilder took 229.08 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:02:01,868 INFO L168 Benchmark]: BuchiAutomizer took 1963.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.8 MB in the end (delta: 223.4 MB). Peak memory consumption was 223.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:02:01,868 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 1.2 GB. Free memory is still 881.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:02:01,871 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 234.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.18 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 12.31 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 229.08 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1963.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 881.8 MB in the end (delta: 223.4 MB). Peak memory consumption was 223.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.22 ms. Allocated memory is still 1.2 GB. Free memory is still 881.8 MB. 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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: 14 SDtfs, 40 SDslu, 33 SDs, 0 SdLazy, 122 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp69 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...