./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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 0.1.25-f470102 [2019-12-07 18:35:13,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:35:13,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:35:13,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:35:13,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:35:13,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:35:13,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:35:13,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:35:13,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:35:13,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:35:13,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:35:13,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:35:13,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:35:13,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:35:13,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:35:13,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:35:13,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:35:13,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:35:13,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:35:13,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:35:13,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:35:13,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:35:13,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:35:13,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:35:13,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:35:13,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:35:13,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:35:13,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:35:13,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:35:13,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:35:13,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:35:13,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:35:13,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:35:13,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:35:13,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:35:13,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:35:13,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:35:13,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:35:13,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:35:13,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:35:13,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:35:13,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 18:35:13,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:35:13,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:35:13,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:35:13,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:35:13,649 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:35:13,649 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:35:13,649 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:35:13,649 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:35:13,649 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:35:13,650 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:35:13,650 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:35:13,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:35:13,650 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:35:13,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:35:13,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:35:13,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:35:13,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:35:13,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:35:13,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:35:13,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:35:13,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:35:13,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:35:13,652 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:35:13,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:35:13,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:35:13,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:35:13,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:35:13,653 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:35:13,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:35:13,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:35:13,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:35:13,653 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:35:13,654 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:35:13,654 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:13,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:35:13,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:35:13,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:35:13,767 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:35:13,768 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:35:13,768 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2019-12-07 18:35:13,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/data/6ce801818/474ff0ea2b584a61b6153a9a2565de14/FLAG441d5a434 [2019-12-07 18:35:14,217 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:35:14,218 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2019-12-07 18:35:14,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/data/6ce801818/474ff0ea2b584a61b6153a9a2565de14/FLAG441d5a434 [2019-12-07 18:35:14,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/bin/uautomizer/data/6ce801818/474ff0ea2b584a61b6153a9a2565de14 [2019-12-07 18:35:14,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:35:14,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:35:14,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:35:14,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:35:14,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:35:14,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14, skipping insertion in model container [2019-12-07 18:35:14,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:35:14,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:35:14,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:35:14,353 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:35:14,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:35:14,403 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:35:14,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14 WrapperNode [2019-12-07 18:35:14,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:35:14,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:35:14,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:35:14,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:35:14,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:35:14,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:35:14,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:35:14,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:35:14,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... [2019-12-07 18:35:14,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:35:14,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:35:14,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:35:14,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:35:14,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:14,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:35:14,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:35:14,475 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-12-07 18:35:14,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-12-07 18:35:14,475 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-12-07 18:35:14,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-12-07 18:35:14,573 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:35:14,573 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 18:35:14,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:35:14 BoogieIcfgContainer [2019-12-07 18:35:14,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:35:14,574 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:35:14,574 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:35:14,577 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:35:14,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:35:14,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:35:14" (1/3) ... [2019-12-07 18:35:14,578 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ecbb45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:35:14, skipping insertion in model container [2019-12-07 18:35:14,578 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:35:14,578 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:35:14" (2/3) ... [2019-12-07 18:35:14,579 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ecbb45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:35:14, skipping insertion in model container [2019-12-07 18:35:14,579 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:35:14,579 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:35:14" (3/3) ... [2019-12-07 18:35:14,580 INFO L371 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_2-1.c [2019-12-07 18:35:14,609 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:35:14,609 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:35:14,609 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:35:14,609 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:35:14,609 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:35:14,609 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:35:14,609 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:35:14,609 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:35:14,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-12-07 18:35:14,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 18:35:14,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:35:14,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:35:14,640 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:35:14,640 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:35:14,640 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:35:14,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-12-07 18:35:14,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 18:35:14,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:35:14,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:35:14,643 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:35:14,643 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:35:14,648 INFO L794 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~ret4, main_~x~0, main_~result~0;main_~x~0 := 2; 16#L37true call main_#t~ret4 := fibo1(main_~x~0);< 24#fibo1ENTRYtrue [2019-12-07 18:35:14,648 INFO L796 eck$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 [2019-12-07 18:35:14,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:35:14,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1034, now seen corresponding path program 1 times [2019-12-07 18:35:14,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:35:14,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548811017] [2019-12-07 18:35:14,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:35:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:35:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:35:14,725 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:35:14,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:35:14,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1816359656, now seen corresponding path program 1 times [2019-12-07 18:35:14,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:35:14,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757653698] [2019-12-07 18:35:14,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:35:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:35:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:35:14,738 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:35:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:35:14,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1268294159, now seen corresponding path program 1 times [2019-12-07 18:35:14,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:35:14,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034908070] [2019-12-07 18:35:14,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:35:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:35:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:35:14,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034908070] [2019-12-07 18:35:14,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:35:14,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 18:35:14,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025916388] [2019-12-07 18:35:14,913 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:35:14,914 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:35:14,914 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:35:14,914 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:35:14,914 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:35:14,914 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:14,914 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:35:14,914 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:35:14,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-1.c_Iteration1_Loop [2019-12-07 18:35:14,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:35:14,915 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:35:14,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:14,995 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:35:14,995 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,006 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,009 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,012 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,012 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,019 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,025 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,031 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,034 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,034 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,041 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,041 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,048 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,055 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,056 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:35:15,062 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:35:15,065 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:35:15,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:35:15,119 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:35:15,120 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:35:15,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:35:15,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:35:15,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:35:15,121 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:35:15,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:35:15,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:35:15,121 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-1.c_Iteration1_Loop [2019-12-07 18:35:15,121 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:35:15,121 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:35:15,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:35:15,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:35:15,186 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,189 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 [2019-12-07 18:35:15,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,195 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,199 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 [2019-12-07 18:35:15,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,203 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,206 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 [2019-12-07 18:35:15,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,208 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,209 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,211 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,215 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 [2019-12-07 18:35:15,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,219 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,224 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 [2019-12-07 18:35:15,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,226 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,232 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 [2019-12-07 18:35:15,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,236 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,240 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 [2019-12-07 18:35:15,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,247 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 [2019-12-07 18:35:15,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,250 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_148655ef-2314-43e2-adc4-26e2c5019677/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:35:15,254 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 [2019-12-07 18:35:15,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:35:15,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:35:15,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:35:15,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:35:15,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:35:15,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:35:15,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:35:15,258 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:35:15,260 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 18:35:15,261 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_148655ef-2314-43e2-adc4-26e2c5019677/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 [2019-12-07 18:35:15,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:35:15,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:35:15,265 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:35:15,265 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2019-12-07 18:35:15,268 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:35:15,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:35:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:35:15,292 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:35:15,293 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:35:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:35:15,310 INFO L264 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:35:15,311 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:35:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:35:15,363 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 [2019-12-07 18:35:15,364 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 6 states. [2019-12-07 18:35:15,509 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. [2019-12-07 18:35:15,510 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 [2019-12-07 18:35:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:35:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-12-07 18:35:15,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2019-12-07 18:35:15,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:35:15,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 10 letters. Loop has 8 letters. [2019-12-07 18:35:15,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:35:15,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 2 letters. Loop has 16 letters. [2019-12-07 18:35:15,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:35:15,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 115 transitions. [2019-12-07 18:35:15,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 18:35:15,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 60 states and 81 transitions. [2019-12-07 18:35:15,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-12-07 18:35:15,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2019-12-07 18:35:15,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2019-12-07 18:35:15,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:35:15,531 INFO L688 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2019-12-07 18:35:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2019-12-07 18:35:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-12-07 18:35:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 18:35:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2019-12-07 18:35:15,556 INFO L711 BuchiCegarLoop]: Abstraction has 53 states and 71 transitions. [2019-12-07 18:35:15,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:35:15,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:35:15,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:35:15,559 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand 8 states. [2019-12-07 18:35:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:35:15,613 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 18:35:15,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:35:15,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 17 transitions. [2019-12-07 18:35:15,615 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:35:15,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2019-12-07 18:35:15,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:35:15,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:35:15,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:35:15,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:35:15,615 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:35:15,615 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:35:15,615 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:35:15,615 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:35:15,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:35:15,616 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:35:15,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:35:15,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:35:15 BoogieIcfgContainer [2019-12-07 18:35:15,620 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:35:15,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:35:15,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:35:15,621 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:35:15,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:35:14" (3/4) ... [2019-12-07 18:35:15,623 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:35:15,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:35:15,625 INFO L168 Benchmark]: Toolchain (without parser) took 1391.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 943.5 MB in the beginning and 864.7 MB in the end (delta: 78.8 MB). Peak memory consumption was 173.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:35:15,625 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:35:15,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -145.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:35:15,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:35:15,626 INFO L168 Benchmark]: Boogie Preprocessor took 11.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:35:15,627 INFO L168 Benchmark]: RCFGBuilder took 138.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:35:15,627 INFO L168 Benchmark]: BuchiAutomizer took 1046.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 864.7 MB in the end (delta: 207.8 MB). Peak memory consumption was 207.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:35:15,627 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 1.1 GB. Free memory is still 864.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:35:15,629 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.4 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -145.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 138.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1046.19 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 864.7 MB in the end (delta: 207.8 MB). Peak memory consumption was 207.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.99 ms. Allocated memory is still 1.1 GB. Free memory is still 864.7 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 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 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, 0.0s 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: 8ms 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...