./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 0d7907681604b1ce9d21af31806cc60e045b313d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:54:27,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:27,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:27,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:27,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:27,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:27,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:27,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:27,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:27,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:27,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:27,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:27,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:27,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:27,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:27,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:27,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:27,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:27,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:27,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:27,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:27,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:27,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:27,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:27,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:27,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:27,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:27,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:27,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:27,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:27,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:27,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:27,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:27,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:27,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:27,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:27,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:27,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:27,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:27,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:27,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:27,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:54:27,648 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:27,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:27,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:27,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:27,651 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:27,651 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:54:27,651 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:54:27,652 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:54:27,652 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:54:27,652 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:54:27,652 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:54:27,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:27,652 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:54:27,653 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:27,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:27,654 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:54:27,654 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:27,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:54:27,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:27,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:27,654 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:54:27,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:27,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:27,655 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:54:27,656 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:54:27,656 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_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 -> 0d7907681604b1ce9d21af31806cc60e045b313d [2019-10-22 08:54:27,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:27,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:27,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:27,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:27,700 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:27,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2019-10-22 08:54:27,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/data/7827d929a/3756fa92d3994af2b577658dd1be0f99/FLAGe7f0140f7 [2019-10-22 08:54:28,129 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:28,130 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2019-10-22 08:54:28,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/data/7827d929a/3756fa92d3994af2b577658dd1be0f99/FLAGe7f0140f7 [2019-10-22 08:54:28,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/bin/uautomizer/data/7827d929a/3756fa92d3994af2b577658dd1be0f99 [2019-10-22 08:54:28,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:28,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:28,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:28,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:28,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:28,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663b5d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28, skipping insertion in model container [2019-10-22 08:54:28,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,166 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:28,180 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:28,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:28,299 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:28,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:28,384 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:28,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28 WrapperNode [2019-10-22 08:54:28,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:28,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:28,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:28,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:28,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:28,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:28,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:28,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:28,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... [2019-10-22 08:54:28,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:28,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:28,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:28,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:28,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 08:54:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:28,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-10-22 08:54:28,493 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-10-22 08:54:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-10-22 08:54:28,494 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-10-22 08:54:28,693 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:28,693 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:54:28,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:28 BoogieIcfgContainer [2019-10-22 08:54:28,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:28,696 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:54:28,696 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:54:28,699 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:54:28,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:28,700 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:54:28" (1/3) ... [2019-10-22 08:54:28,701 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595b1b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:28, skipping insertion in model container [2019-10-22 08:54:28,701 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:28,701 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:28" (2/3) ... [2019-10-22 08:54:28,701 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@595b1b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:28, skipping insertion in model container [2019-10-22 08:54:28,701 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:28,702 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:28" (3/3) ... [2019-10-22 08:54:28,720 INFO L371 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_2-1.c [2019-10-22 08:54:28,794 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:54:28,794 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:54:28,794 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:54:28,794 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:28,794 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:28,794 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:54:28,794 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:28,794 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:54:28,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-10-22 08:54:28,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-10-22 08:54:28,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:28,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:28,846 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:28,846 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:28,847 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:54:28,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-10-22 08:54:28,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-10-22 08:54:28,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:28,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:28,850 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:28,850 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:28,857 INFO L791 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 2; 16#L37true call main_#t~ret4 := fibo1(main_~x~0);< 24#fibo1ENTRYtrue [2019-10-22 08:54:28,858 INFO L793 eck$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 [2019-10-22 08:54:28,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1034, now seen corresponding path program 1 times [2019-10-22 08:54:28,871 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380075249] [2019-10-22 08:54:28,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,971 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1816359656, now seen corresponding path program 1 times [2019-10-22 08:54:28,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211343614] [2019-10-22 08:54:28,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:28,995 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:28,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1268294159, now seen corresponding path program 1 times [2019-10-22 08:54:28,997 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:28,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814734381] [2019-10-22 08:54:28,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,997 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:28,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:29,132 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 08:54:29,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814734381] [2019-10-22 08:54:29,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:29,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:54:29,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666316099] [2019-10-22 08:54:29,301 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:29,301 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:29,302 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:29,302 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:29,302 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:29,302 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:29,303 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:29,304 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:29,304 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-1.c_Iteration1_Loop [2019-10-22 08:54:29,304 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:29,304 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:29,321 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 08:54:29,328 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 08:54:29,331 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 08:54:29,334 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 08:54:29,337 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 08:54:29,341 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 08:54:29,343 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 08:54:29,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:29,348 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 08:54:29,350 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 08:54:29,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:29,421 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,433 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 08:54:29,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,451 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,451 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,462 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,479 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,479 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,491 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,505 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,505 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,513 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,521 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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 [2019-10-22 08:54:29,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:29,529 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:29,529 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/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:29,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:29,545 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_75c8f52c-28e1-41cb-8bf1-687a124adcb7/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) [2019-10-22 08:54:29,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:29,560 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 [2019-10-22 08:54:29,619 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:29,620 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:29,620 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:29,620 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:29,621 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:29,621 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:29,621 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:29,621 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:29,621 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:29,621 INFO L131 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-1.c_Iteration1_Loop [2019-10-22 08:54:29,621 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:29,621 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:29,622 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 08:54:29,624 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 08:54:29,626 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 08:54:29,628 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 08:54:29,630 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 08:54:29,632 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 08:54:29,633 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 08:54:29,635 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 08:54:29,637 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 08:54:29,643 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 08:54:29,690 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:29,695 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:29,696 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 08:54:29,698 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,698 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,699 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,699 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,699 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,701 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,701 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,703 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,703 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 08:54:29,704 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,704 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,704 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,704 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,704 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,705 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,705 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,706 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,707 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 08:54:29,707 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,707 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,708 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,708 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,708 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,708 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,708 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,709 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,710 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 08:54:29,711 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,711 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,711 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,711 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,711 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,712 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,712 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,713 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 08:54:29,714 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,714 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,714 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,714 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,715 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,715 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,715 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,716 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,716 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 08:54:29,717 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,717 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,717 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,717 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,717 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,718 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,718 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,720 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 08:54:29,720 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,721 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,721 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,721 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,721 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,721 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,722 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,723 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 08:54:29,724 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,724 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,724 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,724 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,724 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,725 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,725 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:29,726 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 08:54:29,727 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:29,727 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:29,727 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:29,727 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:29,728 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:29,728 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:29,728 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:29,734 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:29,738 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:54:29,738 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:54:29,740 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:29,740 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:29,740 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:29,741 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2019-10-22 08:54:29,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:29,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:29,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:29,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:54:29,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:29,840 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 08:54:29,854 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 [2019-10-22 08:54:29,856 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 6 states. [2019-10-22 08:54:30,067 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. [2019-10-22 08:54:30,069 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 [2019-10-22 08:54:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:54:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-10-22 08:54:30,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2019-10-22 08:54:30,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:30,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 10 letters. Loop has 8 letters. [2019-10-22 08:54:30,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:30,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 2 letters. Loop has 16 letters. [2019-10-22 08:54:30,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:30,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 115 transitions. [2019-10-22 08:54:30,090 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-10-22 08:54:30,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 60 states and 81 transitions. [2019-10-22 08:54:30,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-10-22 08:54:30,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2019-10-22 08:54:30,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2019-10-22 08:54:30,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:30,105 INFO L688 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2019-10-22 08:54:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2019-10-22 08:54:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-10-22 08:54:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 08:54:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2019-10-22 08:54:30,139 INFO L711 BuchiCegarLoop]: Abstraction has 53 states and 71 transitions. [2019-10-22 08:54:30,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:54:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:30,143 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand 8 states. [2019-10-22 08:54:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:30,215 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-22 08:54:30,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:54:30,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 17 transitions. [2019-10-22 08:54:30,217 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:54:30,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2019-10-22 08:54:30,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:54:30,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:54:30,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:54:30,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:54:30,218 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:30,218 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:30,218 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:30,218 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:54:30,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:30,219 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:54:30,219 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:54:30,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:54:30 BoogieIcfgContainer [2019-10-22 08:54:30,227 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:54:30,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:30,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:30,228 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:30,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:28" (3/4) ... [2019-10-22 08:54:30,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:54:30,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:30,236 INFO L168 Benchmark]: Toolchain (without parser) took 2085.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.5 MB in the beginning and 936.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 149.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:30,236 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:30,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:30,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.26 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 08:54:30,239 INFO L168 Benchmark]: Boogie Preprocessor took 15.89 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 08:54:30,239 INFO L168 Benchmark]: RCFGBuilder took 268.08 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:30,240 INFO L168 Benchmark]: BuchiAutomizer took 1531.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 936.2 MB in the end (delta: 183.1 MB). Peak memory consumption was 183.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:30,241 INFO L168 Benchmark]: Witness Printer took 6.00 ms. Allocated memory is still 1.2 GB. Free memory is still 936.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:30,244 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 234.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -191.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.26 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 15.89 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 268.08 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1531.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 936.2 MB in the end (delta: 183.1 MB). Peak memory consumption was 183.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.00 ms. Allocated memory is still 1.2 GB. Free memory is still 936.2 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 1.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. 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: 7ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...