./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 82bd2b65619821bf052931b3532da39241349d4f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 14:30:40,238 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 14:30:40,239 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 14:30:40,248 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 14:30:40,248 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 14:30:40,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 14:30:40,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 14:30:40,251 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 14:30:40,252 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 14:30:40,253 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 14:30:40,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 14:30:40,254 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 14:30:40,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 14:30:40,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 14:30:40,256 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 14:30:40,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 14:30:40,257 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 14:30:40,258 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 14:30:40,260 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 14:30:40,261 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 14:30:40,262 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 14:30:40,262 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 14:30:40,264 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 14:30:40,264 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 14:30:40,264 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 14:30:40,265 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 14:30:40,266 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 14:30:40,266 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 14:30:40,267 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 14:30:40,267 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 14:30:40,268 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 14:30:40,268 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 14:30:40,268 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 14:30:40,268 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 14:30:40,269 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 14:30:40,270 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 14:30:40,270 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 14:30:40,281 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 14:30:40,281 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 14:30:40,282 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 14:30:40,282 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 14:30:40,282 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 14:30:40,283 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 14:30:40,283 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 14:30:40,283 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 14:30:40,283 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 14:30:40,283 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 14:30:40,283 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 14:30:40,284 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 14:30:40,284 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 14:30:40,284 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 14:30:40,284 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 14:30:40,284 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 14:30:40,284 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 14:30:40,284 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 14:30:40,285 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 14:30:40,285 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 14:30:40,285 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 14:30:40,285 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 14:30:40,285 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 14:30:40,285 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 14:30:40,286 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 14:30:40,286 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 14:30:40,286 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 14:30:40,286 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 14:30:40,287 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 14:30:40,287 INFO L133 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_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bd2b65619821bf052931b3532da39241349d4f [2018-12-08 14:30:40,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 14:30:40,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 14:30:40,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 14:30:40,320 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 14:30:40,320 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 14:30:40,321 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2018-12-08 14:30:40,356 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/data/a205a6afd/4e2dda291d0e479097effb75983b25a5/FLAG8d2e82bd4 [2018-12-08 14:30:40,686 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 14:30:40,686 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/sv-benchmarks/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2018-12-08 14:30:40,689 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/data/a205a6afd/4e2dda291d0e479097effb75983b25a5/FLAG8d2e82bd4 [2018-12-08 14:30:41,093 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/data/a205a6afd/4e2dda291d0e479097effb75983b25a5 [2018-12-08 14:30:41,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 14:30:41,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 14:30:41,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 14:30:41,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 14:30:41,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 14:30:41,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4888228d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41, skipping insertion in model container [2018-12-08 14:30:41,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 14:30:41,122 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 14:30:41,212 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:30:41,214 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 14:30:41,223 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:30:41,232 INFO L195 MainTranslator]: Completed translation [2018-12-08 14:30:41,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41 WrapperNode [2018-12-08 14:30:41,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 14:30:41,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 14:30:41,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 14:30:41,234 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 14:30:41,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 14:30:41,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 14:30:41,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 14:30:41,253 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 14:30:41,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... [2018-12-08 14:30:41,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 14:30:41,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 14:30:41,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 14:30:41,264 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 14:30:41,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,326 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2018-12-08 14:30:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2018-12-08 14:30:41,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 14:30:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 14:30:41,400 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 14:30:41,400 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-08 14:30:41,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:30:41 BoogieIcfgContainer [2018-12-08 14:30:41,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 14:30:41,401 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 14:30:41,401 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 14:30:41,403 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 14:30:41,404 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 14:30:41,404 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 02:30:41" (1/3) ... [2018-12-08 14:30:41,404 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f20daf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 02:30:41, skipping insertion in model container [2018-12-08 14:30:41,404 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 14:30:41,404 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:30:41" (2/3) ... [2018-12-08 14:30:41,405 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f20daf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 02:30:41, skipping insertion in model container [2018-12-08 14:30:41,405 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 14:30:41,405 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:30:41" (3/3) ... [2018-12-08 14:30:41,406 INFO L375 chiAutomizerObserver]: Analyzing ICFG rec_counter1_true-termination_true-no-overflow.c [2018-12-08 14:30:41,436 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 14:30:41,437 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 14:30:41,437 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 14:30:41,437 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 14:30:41,437 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 14:30:41,437 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 14:30:41,437 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 14:30:41,437 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 14:30:41,437 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 14:30:41,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-12-08 14:30:41,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-08 14:30:41,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 14:30:41,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 14:30:41,464 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 14:30:41,464 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 14:30:41,464 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 14:30:41,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-12-08 14:30:41,465 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-12-08 14:30:41,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 14:30:41,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 14:30:41,465 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 14:30:41,465 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 14:30:41,470 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2018-12-08 14:30:41,470 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2018-12-08 14:30:41,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:41,474 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2018-12-08 14:30:41,475 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:41,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:41,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:41,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:41,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:41,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2018-12-08 14:30:41,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:41,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:41,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:41,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:41,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:41,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:41,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2018-12-08 14:30:41,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:41,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:41,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:41,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:41,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:41,597 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:41,597 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:41,597 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:41,597 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:41,598 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 14:30:41,598 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:41,598 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:41,598 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:41,598 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 14:30:41,598 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:41,598 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:41,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,674 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:41,674 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,677 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,678 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,686 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,686 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,703 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,703 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,718 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,718 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,720 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,720 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,735 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,735 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,737 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,738 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,752 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,752 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,754 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,754 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,768 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,768 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,786 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 14:30:41,786 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,796 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,796 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-5} Honda state: {rec_#in~a=-5} Generalized eigenvectors: [{rec_#in~a=0}, {rec_#in~a=-1}, {rec_#in~a=0}] Lambdas: [0, 1, 3] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,811 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,813 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,813 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-12-08 14:30:41,841 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:41,841 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:41,841 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:41,841 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:41,841 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 14:30:41,841 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:41,841 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:41,842 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:41,842 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-08 14:30:41,842 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:41,842 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:41,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:41,905 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:41,906 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,907 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,907 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,910 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,910 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,935 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,935 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,937 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,937 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,955 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,957 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,957 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,971 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,971 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,973 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,973 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3=0} Honda state: {ULTIMATE.start_main_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:41,988 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:41,988 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:41,990 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:41,990 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,005 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,005 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,007 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,007 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,022 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,023 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,025 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,025 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,039 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,041 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,041 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0} Honda state: {ULTIMATE.start_main_~i~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,056 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,056 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,058 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,058 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,072 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,072 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,074 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,074 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,091 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,091 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,105 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,105 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,107 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 14:30:42,107 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1=0} Honda state: {ULTIMATE.start_main_~res~1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/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 [2018-12-08 14:30:42,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,122 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,139 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 14:30:42,139 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,159 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 14:30:42,160 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:42,160 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:42,160 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:42,160 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:42,160 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 14:30:42,160 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,160 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:42,160 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:42,160 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-12-08 14:30:42,161 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:42,161 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:42,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,228 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:42,231 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 14:30:42,232 INFO L122 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 [2018-12-08 14:30:42,232 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,232 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,233 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,233 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,234 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,234 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,236 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,237 INFO L122 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 [2018-12-08 14:30:42,237 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,237 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,237 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,237 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,237 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,238 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,238 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,238 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,238 INFO L122 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 [2018-12-08 14:30:42,239 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,239 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,239 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,239 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,239 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,240 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,240 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,240 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,241 INFO L122 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 [2018-12-08 14:30:42,241 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,241 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,242 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,243 INFO L122 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 [2018-12-08 14:30:42,243 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,243 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,243 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,243 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,243 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,244 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,244 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,245 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,245 INFO L122 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 [2018-12-08 14:30:42,246 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,246 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,246 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,246 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,246 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,247 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,247 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,248 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,248 INFO L122 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 [2018-12-08 14:30:42,248 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,248 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,248 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,248 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,249 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,249 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,250 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,250 INFO L122 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 [2018-12-08 14:30:42,250 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,251 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,251 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,251 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,251 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,251 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,251 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,252 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,252 INFO L122 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 [2018-12-08 14:30:42,253 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,253 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,253 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,253 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,253 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,253 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,254 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,255 INFO L122 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 [2018-12-08 14:30:42,255 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,255 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,255 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,256 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,256 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,256 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,257 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,257 INFO L122 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 [2018-12-08 14:30:42,258 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,258 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,258 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,258 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,258 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,258 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,258 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,259 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,259 INFO L122 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 [2018-12-08 14:30:42,260 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,260 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,260 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 14:30:42,260 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,265 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-12-08 14:30:42,265 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-12-08 14:30:42,316 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 14:30:42,333 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 14:30:42,333 INFO L444 ModelExtractionUtils]: 6 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-08 14:30:42,335 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 14:30:42,338 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-12-08 14:30:42,339 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 14:30:42,339 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2018-12-08 14:30:42,344 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-12-08 14:30:42,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:30:42,428 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-12-08 14:30:42,429 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2018-12-08 14:30:42,522 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 5 states. Result 33 states and 39 transitions. Complement of second has 13 states. [2018-12-08 14:30:42,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 14:30:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 14:30:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-12-08 14:30:42,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-08 14:30:42,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 14:30:42,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-08 14:30:42,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2018-12-08 14:30:42,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-08 14:30:42,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2018-12-08 14:30:42,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 14:30:42,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 14:30:42,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-12-08 14:30:42,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 14:30:42,536 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-12-08 14:30:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-12-08 14:30:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-12-08 14:30:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-08 14:30:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-12-08 14:30:42,553 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-08 14:30:42,553 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-08 14:30:42,553 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 14:30:42,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-12-08 14:30:42,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-08 14:30:42,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 14:30:42,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 14:30:42,554 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:30:42,554 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-08 14:30:42,554 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2018-12-08 14:30:42,554 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2018-12-08 14:30:42,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2018-12-08 14:30:42,555 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:42,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:42,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:42,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2018-12-08 14:30:42,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:42,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:42,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:42,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,564 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2018-12-08 14:30:42,564 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:42,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:42,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:42,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 14:30:42,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:30:42,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 14:30:42,606 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:42,606 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:42,606 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:42,606 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:42,606 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 14:30:42,606 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,606 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:42,606 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:42,606 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 14:30:42,606 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:42,606 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:42,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,633 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:42,633 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,635 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,635 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 14:30:42,651 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,666 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 14:30:42,667 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:42,668 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:42,668 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:42,668 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:42,668 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 14:30:42,668 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,668 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:42,668 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:42,668 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 14:30:42,668 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:42,668 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:42,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,686 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:42,686 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 14:30:42,686 INFO L122 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 [2018-12-08 14:30:42,686 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,687 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,687 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,687 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,687 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,687 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,687 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,688 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 14:30:42,688 INFO L122 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 [2018-12-08 14:30:42,689 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,689 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,689 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,689 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,689 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,690 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,690 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,691 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 14:30:42,692 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 14:30:42,692 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 14:30:42,693 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 14:30:42,693 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 14:30:42,693 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 14:30:42,693 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-12-08 14:30:42,693 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 14:30:42,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:30:42,745 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-08 14:30:42,745 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 14:30:42,767 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 64 transitions. Complement of second has 12 states. [2018-12-08 14:30:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 14:30:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 14:30:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2018-12-08 14:30:42,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2018-12-08 14:30:42,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2018-12-08 14:30:42,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2018-12-08 14:30:42,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2018-12-08 14:30:42,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-08 14:30:42,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2018-12-08 14:30:42,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-12-08 14:30:42,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-12-08 14:30:42,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-12-08 14:30:42,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 14:30:42,772 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-08 14:30:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-12-08 14:30:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-12-08 14:30:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-08 14:30:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2018-12-08 14:30:42,774 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-12-08 14:30:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 14:30:42,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 14:30:42,776 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2018-12-08 14:30:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:30:42,787 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2018-12-08 14:30:42,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 14:30:42,788 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 26 transitions. [2018-12-08 14:30:42,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-08 14:30:42,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 26 transitions. [2018-12-08 14:30:42,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-12-08 14:30:42,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-12-08 14:30:42,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 26 transitions. [2018-12-08 14:30:42,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 14:30:42,790 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-12-08 14:30:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 26 transitions. [2018-12-08 14:30:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2018-12-08 14:30:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-08 14:30:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-12-08 14:30:42,792 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-12-08 14:30:42,792 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-12-08 14:30:42,792 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 14:30:42,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2018-12-08 14:30:42,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-08 14:30:42,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 14:30:42,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 14:30:42,793 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-08 14:30:42,793 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-08 14:30:42,793 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 291#L18 assume !(main_~i~0 <= 0); 283#L20 call main_#t~ret3 := rec(main_~i~0);< 282#recENTRY ~a := #in~a; 284#L5 assume !(0 == ~a); 286#L8 call #t~ret0 := rec(~a - 1);< 285#recENTRY ~a := #in~a; 288#L5 assume !(0 == ~a); 287#L8 call #t~ret0 := rec(~a - 1);< 285#recENTRY ~a := #in~a; 289#L5 assume 0 == ~a;#res := 0; 300#recFINAL assume true; 297#recEXIT >#34#return; 298#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 292#L10-2 assume !(~rescopy~0 > 0); 293#L10-3 #res := 1 + ~res~0; 296#recFINAL assume true; 299#recEXIT >#34#return; 294#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 295#L10-2 [2018-12-08 14:30:42,793 INFO L796 eck$LassoCheckResult]: Loop: 295#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 295#L10-2 [2018-12-08 14:30:42,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2018-12-08 14:30:42,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:42,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:42,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:42,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2018-12-08 14:30:42,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:42,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:30:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2018-12-08 14:30:42,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 14:30:42,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 14:30:42,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 14:30:42,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:30:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:30:42,822 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:42,822 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:42,823 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:42,823 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:42,823 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 14:30:42,823 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,823 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:42,823 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:42,823 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 14:30:42,823 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:42,823 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:42,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,849 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:42,849 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,863 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 14:30:42,863 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8a16b029-f222-4b11-8bae-5a634a9f4dc5/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,880 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 14:30:42,880 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 14:30:42,895 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 14:30:42,896 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 14:30:42,896 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 14:30:42,896 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 14:30:42,897 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 14:30:42,897 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 14:30:42,897 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 14:30:42,897 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 14:30:42,897 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 14:30:42,897 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 14:30:42,897 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 14:30:42,897 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 14:30:42,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 14:30:42,909 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 14:30:42,909 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 14:30:42,910 INFO L122 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 [2018-12-08 14:30:42,910 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 14:30:42,910 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 14:30:42,910 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 14:30:42,911 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 14:30:42,911 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 14:30:42,911 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 14:30:42,911 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 14:30:42,913 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 14:30:42,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 14:30:42,913 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 14:30:42,914 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 14:30:42,914 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 14:30:42,914 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 14:30:42,914 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-12-08 14:30:42,914 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 14:30:42,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:30:42,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-08 14:30:42,952 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 14:30:42,972 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2018-12-08 14:30:42,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 14:30:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 14:30:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-08 14:30:42,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-12-08 14:30:42,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:42,973 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 14:30:42,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:42,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:43,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:30:43,011 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-08 14:30:43,012 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 14:30:43,032 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 7 states. [2018-12-08 14:30:43,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 14:30:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 14:30:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-08 14:30:43,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-12-08 14:30:43,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:43,033 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 14:30:43,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:30:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:43,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:30:43,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 14:30:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:30:43,066 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-12-08 14:30:43,066 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 14:30:43,085 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 32 states and 40 transitions. Complement of second has 9 states. [2018-12-08 14:30:43,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 14:30:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 14:30:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-12-08 14:30:43,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2018-12-08 14:30:43,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:43,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2018-12-08 14:30:43,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:43,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2018-12-08 14:30:43,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 14:30:43,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2018-12-08 14:30:43,087 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 14:30:43,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-12-08 14:30:43,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 14:30:43,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 14:30:43,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 14:30:43,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 14:30:43,087 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 14:30:43,087 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 14:30:43,087 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 14:30:43,087 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 14:30:43,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 14:30:43,088 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 14:30:43,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 14:30:43,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 02:30:43 BoogieIcfgContainer [2018-12-08 14:30:43,091 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 14:30:43,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 14:30:43,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 14:30:43,092 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 14:30:43,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:30:41" (3/4) ... [2018-12-08 14:30:43,094 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 14:30:43,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 14:30:43,094 INFO L168 Benchmark]: Toolchain (without parser) took 1998.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.7 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -183.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. [2018-12-08 14:30:43,095 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:30:43,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.58 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 14:30:43,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.05 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:30:43,096 INFO L168 Benchmark]: Boogie Preprocessor took 10.66 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:30:43,097 INFO L168 Benchmark]: RCFGBuilder took 137.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-08 14:30:43,097 INFO L168 Benchmark]: BuchiAutomizer took 1690.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.3 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. [2018-12-08 14:30:43,098 INFO L168 Benchmark]: Witness Printer took 2.36 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. [2018-12-08 14:30:43,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 135.58 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.05 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.66 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 137.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1690.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.3 MB). Peak memory consumption was 58.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.36 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 5 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 51 SDs, 0 SdLazy, 48 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf124 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 79ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...