./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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-aa41828 [2018-11-22 21:58:27,009 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:58:27,011 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:58:27,017 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:58:27,017 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:58:27,018 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:58:27,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:58:27,020 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:58:27,021 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:58:27,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:58:27,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:58:27,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:58:27,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:58:27,024 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:58:27,025 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:58:27,025 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:58:27,026 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:58:27,027 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:58:27,028 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:58:27,030 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:58:27,030 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:58:27,031 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:58:27,033 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:58:27,033 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:58:27,033 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:58:27,034 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:58:27,035 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:58:27,035 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:58:27,036 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:58:27,036 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:58:27,037 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:58:27,037 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:58:27,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:58:27,037 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:58:27,038 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:58:27,039 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:58:27,039 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-22 21:58:27,050 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:58:27,050 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:58:27,051 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 21:58:27,051 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 21:58:27,051 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 21:58:27,051 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-22 21:58:27,051 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-22 21:58:27,052 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:58:27,052 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-22 21:58:27,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:58:27,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:58:27,054 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-22 21:58:27,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:58:27,054 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 21:58:27,054 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-22 21:58:27,054 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-22 21:58:27,054 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:27,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:58:27,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:58:27,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:58:27,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:58:27,088 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:58:27,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2018-11-22 21:58:27,124 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/data/a3b22bea3/71edf6f5c11742cabcf0f0c95def6740/FLAG9fd113101 [2018-11-22 21:58:27,430 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:58:27,431 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/sv-benchmarks/c/termination-numeric/rec_counter1_true-termination_true-no-overflow.c [2018-11-22 21:58:27,435 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/data/a3b22bea3/71edf6f5c11742cabcf0f0c95def6740/FLAG9fd113101 [2018-11-22 21:58:27,445 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/bin-2019/uautomizer/data/a3b22bea3/71edf6f5c11742cabcf0f0c95def6740 [2018-11-22 21:58:27,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:58:27,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:58:27,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:58:27,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:58:27,453 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:58:27,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728335f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27, skipping insertion in model container [2018-11-22 21:58:27,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:58:27,479 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:58:27,584 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:58:27,586 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:58:27,594 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:58:27,602 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:58:27,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27 WrapperNode [2018-11-22 21:58:27,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:58:27,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:58:27,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:58:27,603 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:58:27,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:58:27,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:58:27,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:58:27,621 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:58:27,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... [2018-11-22 21:58:27,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:58:27,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:58:27,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:58:27,632 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:58:27,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2018-11-22 21:58:27,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2018-11-22 21:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:58:27,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:58:27,799 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:58:27,800 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-22 21:58:27,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:58:27 BoogieIcfgContainer [2018-11-22 21:58:27,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:58:27,800 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-22 21:58:27,800 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-22 21:58:27,803 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-22 21:58:27,803 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:58:27,803 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 09:58:27" (1/3) ... [2018-11-22 21:58:27,804 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3390203b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 09:58:27, skipping insertion in model container [2018-11-22 21:58:27,804 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:58:27,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:58:27" (2/3) ... [2018-11-22 21:58:27,804 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3390203b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 09:58:27, skipping insertion in model container [2018-11-22 21:58:27,804 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-22 21:58:27,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:58:27" (3/3) ... [2018-11-22 21:58:27,805 INFO L375 chiAutomizerObserver]: Analyzing ICFG rec_counter1_true-termination_true-no-overflow.c [2018-11-22 21:58:27,852 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:58:27,853 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-22 21:58:27,853 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-22 21:58:27,853 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-22 21:58:27,853 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:58:27,854 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:58:27,854 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-22 21:58:27,854 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:58:27,854 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-22 21:58:27,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-22 21:58:27,879 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-22 21:58:27,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:58:27,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:58:27,885 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-22 21:58:27,885 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:58:27,886 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-22 21:58:27,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-22 21:58:27,887 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-22 21:58:27,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:58:27,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:58:27,888 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-22 21:58:27,888 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-22 21:58:27,894 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 5#L18true assume !(main_~i~0 <= 0); 8#L20true call main_#t~ret3 := rec(main_~i~0);< 3#recENTRYtrue [2018-11-22 21:58:27,895 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~a := #in~a; 7#L5true assume !(0 == ~a); 10#L8true call #t~ret0 := rec(~a - 1);< 3#recENTRYtrue [2018-11-22 21:58:27,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:27,900 INFO L82 PathProgramCache]: Analyzing trace with hash 51805, now seen corresponding path program 1 times [2018-11-22 21:58:27,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:27,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:27,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:27,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:27,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:27,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 29948, now seen corresponding path program 1 times [2018-11-22 21:58:27,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:27,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:27,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:27,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:27,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:27,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1543322912, now seen corresponding path program 1 times [2018-11-22 21:58:27,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:27,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:27,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:27,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:27,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:28,054 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:28,055 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:28,055 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:28,055 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:28,055 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:58:28,055 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:28,055 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:28,055 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:28,055 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-22 21:58:28,055 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:28,056 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:28,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,199 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:28,200 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,211 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,211 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,217 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,218 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,236 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,236 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,238 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,238 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,253 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,253 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,255 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,255 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,270 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,271 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,273 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,273 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,287 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,287 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,289 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,289 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,303 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,303 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:58:28,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,330 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,330 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,345 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,345 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,347 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,347 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2018-11-22 21:58:28,387 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:28,387 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:28,388 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:28,388 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:28,388 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:58:28,388 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:28,388 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:28,388 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:28,388 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-22 21:58:28,388 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:28,388 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:28,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,547 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:28,547 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,550 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,550 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,552 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,552 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,566 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,567 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,568 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,568 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,583 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,583 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,585 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,585 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,599 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,600 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,602 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,602 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,616 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,616 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,618 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,618 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,632 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,632 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,634 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,634 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,649 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,649 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,651 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,651 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,665 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,668 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,668 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,682 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,682 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,684 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,684 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,699 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,699 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,701 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,701 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,715 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,717 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,717 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,731 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,731 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,733 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-22 21:58:28,733 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_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,748 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:28,748 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:28,765 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:58:28,765 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:28,785 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:58:28,786 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:28,786 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:28,786 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:28,786 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:28,786 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:58:28,786 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:28,786 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:28,786 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:28,786 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-22 21:58:28,786 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:28,786 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:28,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:28,869 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:28,874 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:58:28,875 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 [2018-11-22 21:58:28,877 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,877 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,877 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,877 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,878 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,879 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,879 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,882 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,882 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 [2018-11-22 21:58:28,883 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,883 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,883 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,883 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,883 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,883 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,884 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,884 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,885 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 [2018-11-22 21:58:28,885 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,885 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,886 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,886 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,886 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,886 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,886 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,887 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,888 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 [2018-11-22 21:58:28,888 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,888 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,888 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,889 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,889 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,889 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,889 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,890 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,891 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 [2018-11-22 21:58:28,891 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,891 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,891 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,892 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,892 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,892 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,892 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,893 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,893 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 [2018-11-22 21:58:28,894 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,894 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,894 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,894 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,895 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,895 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,895 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,898 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,898 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 [2018-11-22 21:58:28,899 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,899 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,899 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,899 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,900 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,900 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,900 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,901 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,902 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 [2018-11-22 21:58:28,902 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,902 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,902 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,903 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,903 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,903 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,903 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,904 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,904 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 [2018-11-22 21:58:28,904 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,904 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,905 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,905 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,905 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,905 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,905 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,907 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,907 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 [2018-11-22 21:58:28,908 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,908 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,908 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,908 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,908 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,909 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,909 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,909 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,910 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 [2018-11-22 21:58:28,910 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,910 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:28,911 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,911 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:28,911 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,911 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:28,911 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:28,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:28,913 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 [2018-11-22 21:58:28,914 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:28,914 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:28,914 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-22 21:58:28,914 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:28,921 INFO L402 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2018-11-22 21:58:28,921 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-22 21:58:28,981 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:58:28,998 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-22 21:58:28,998 INFO L444 ModelExtractionUtils]: 6 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-22 21:58:29,000 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:58:29,004 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-22 21:58:29,004 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:58:29,004 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2018-11-22 21:58:29,019 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-22 21:58:29,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:58:29,135 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 [2018-11-22 21:58:29,135 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 5 states. [2018-11-22 21:58:29,236 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. [2018-11-22 21:58:29,236 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 [2018-11-22 21:58:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-22 21:58:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-11-22 21:58:29,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-22 21:58:29,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-22 21:58:29,240 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-22 21:58:29,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2018-11-22 21:58:29,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:58:29,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 17 states and 22 transitions. [2018-11-22 21:58:29,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-22 21:58:29,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-22 21:58:29,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-11-22 21:58:29,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:58:29,251 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-22 21:58:29,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-11-22 21:58:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-11-22 21:58:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-22 21:58:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-11-22 21:58:29,269 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-22 21:58:29,269 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-22 21:58:29,269 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-22 21:58:29,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-11-22 21:58:29,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:58:29,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:58:29,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:58:29,271 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:58:29,271 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-22 21:58:29,271 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 122#L18 assume !(main_~i~0 <= 0); 114#L20 call main_#t~ret3 := rec(main_~i~0);< 113#recENTRY ~a := #in~a; 115#L5 assume !(0 == ~a); 117#L8 call #t~ret0 := rec(~a - 1);< 116#recENTRY ~a := #in~a; 118#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 125#recEXIT >#34#return; 123#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 119#L10-2 [2018-11-22 21:58:29,271 INFO L796 eck$LassoCheckResult]: Loop: 119#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 119#L10-2 [2018-11-22 21:58:29,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash -396516555, now seen corresponding path program 1 times [2018-11-22 21:58:29,271 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:29,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:29,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:29,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,279 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2018-11-22 21:58:29,279 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:29,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:29,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:29,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash 592888698, now seen corresponding path program 1 times [2018-11-22 21:58:29,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:29,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:29,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:29,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-22 21:58:29,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:58:29,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-22 21:58:29,329 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:29,329 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:29,329 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:29,330 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:29,330 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:58:29,330 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:29,330 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:29,330 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:29,330 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-22 21:58:29,330 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:29,330 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:29,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,353 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:29,353 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:29,355 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:29,355 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:29,371 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:58:29,372 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:29,387 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:58:29,388 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:29,388 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:29,388 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:29,388 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:29,389 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:58:29,389 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:29,389 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:29,389 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:29,389 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-22 21:58:29,389 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:29,389 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:29,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,409 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:29,409 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:58:29,409 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 [2018-11-22 21:58:29,410 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:29,410 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:29,410 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:29,410 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:29,410 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:29,411 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:29,411 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:29,411 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-22 21:58:29,420 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 [2018-11-22 21:58:29,420 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:29,420 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:29,420 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:29,420 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:29,420 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:29,421 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:29,421 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:29,423 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:58:29,424 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:58:29,424 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:58:29,424 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:58:29,424 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:58:29,424 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:58:29,425 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-11-22 21:58:29,425 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:58:29,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:58:29,487 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 [2018-11-22 21:58:29,487 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-22 21:58:29,512 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. [2018-11-22 21:58:29,513 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 [2018-11-22 21:58:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:58:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2018-11-22 21:58:29,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 1 letters. [2018-11-22 21:58:29,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 12 letters. Loop has 1 letters. [2018-11-22 21:58:29,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 11 letters. Loop has 2 letters. [2018-11-22 21:58:29,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2018-11-22 21:58:29,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:58:29,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 23 states and 30 transitions. [2018-11-22 21:58:29,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-22 21:58:29,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-22 21:58:29,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-11-22 21:58:29,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:58:29,520 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-11-22 21:58:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-11-22 21:58:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2018-11-22 21:58:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-22 21:58:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2018-11-22 21:58:29,522 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2018-11-22 21:58:29,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 21:58:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:58:29,525 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 5 states. [2018-11-22 21:58:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:58:29,539 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-11-22 21:58:29,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 21:58:29,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 22 transitions. [2018-11-22 21:58:29,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:58:29,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 22 transitions. [2018-11-22 21:58:29,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-22 21:58:29,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-22 21:58:29,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 22 transitions. [2018-11-22 21:58:29,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-22 21:58:29,541 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-22 21:58:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 22 transitions. [2018-11-22 21:58:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-22 21:58:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-22 21:58:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-11-22 21:58:29,543 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-22 21:58:29,543 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-11-22 21:58:29,543 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-22 21:58:29,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 22 transitions. [2018-11-22 21:58:29,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-22 21:58:29,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-22 21:58:29,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-22 21:58:29,544 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-22 21:58:29,544 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-22 21:58:29,544 INFO L794 eck$LassoCheckResult]: Stem: 287#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~i~0, main_~res~1;main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 288#L18 assume !(main_~i~0 <= 0); 280#L20 call main_#t~ret3 := rec(main_~i~0);< 279#recENTRY ~a := #in~a; 281#L5 assume !(0 == ~a); 283#L8 call #t~ret0 := rec(~a - 1);< 282#recENTRY ~a := #in~a; 285#L5 assume !(0 == ~a); 284#L8 call #t~ret0 := rec(~a - 1);< 282#recENTRY ~a := #in~a; 286#L5 assume 0 == ~a;#res := 0; 295#recFINAL assume true; 297#recEXIT >#34#return; 296#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 289#L10-2 assume !(~rescopy~0 > 0); 290#L10-3 #res := 1 + ~res~0; 293#recFINAL assume true; 294#recEXIT >#34#return; 291#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 292#L10-2 [2018-11-22 21:58:29,544 INFO L796 eck$LassoCheckResult]: Loop: 292#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 292#L10-2 [2018-11-22 21:58:29,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash 404659162, now seen corresponding path program 1 times [2018-11-22 21:58:29,545 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:29,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:29,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:29,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2018-11-22 21:58:29,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:29,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:58:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,559 INFO L82 PathProgramCache]: Analyzing trace with hash -340467851, now seen corresponding path program 1 times [2018-11-22 21:58:29,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 21:58:29,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 21:58:29,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:58:29,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:58:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-22 21:58:29,593 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:29,593 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:29,593 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:29,593 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:29,593 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-22 21:58:29,594 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:29,594 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:29,594 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:29,594 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-22 21:58:29,594 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:29,594 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:29,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,618 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:29,618 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:29,631 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-22 21:58:29,631 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2fa5d30-6e93-4701-81ba-9620d72b8424/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 [2018-11-22 21:58:29,652 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-22 21:58:29,652 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-22 21:58:29,671 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-22 21:58:29,673 INFO L216 LassoAnalysis]: Preferences: [2018-11-22 21:58:29,673 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-22 21:58:29,673 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-22 21:58:29,673 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-22 21:58:29,673 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-22 21:58:29,673 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-22 21:58:29,673 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-22 21:58:29,674 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-22 21:58:29,674 INFO L131 ssoRankerPreferences]: Filename of dumped script: rec_counter1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-22 21:58:29,674 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-22 21:58:29,674 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-22 21:58:29,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-22 21:58:29,703 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-22 21:58:29,703 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-22 21:58:29,704 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 [2018-11-22 21:58:29,704 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-22 21:58:29,704 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-22 21:58:29,704 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-22 21:58:29,705 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-22 21:58:29,705 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-22 21:58:29,705 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-22 21:58:29,705 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-22 21:58:29,707 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-22 21:58:29,708 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-22 21:58:29,708 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-22 21:58:29,708 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-22 21:58:29,708 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-22 21:58:29,709 INFO L518 LassoAnalysis]: Proved termination. [2018-11-22 21:58:29,709 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2018-11-22 21:58:29,709 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-22 21:58:29,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:58:29,759 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 [2018-11-22 21:58:29,759 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-22 21:58:29,788 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. [2018-11-22 21:58:29,789 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 [2018-11-22 21:58:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:58:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-22 21:58:29,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-22 21:58:29,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,790 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:58:29,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:58:29,831 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 [2018-11-22 21:58:29,831 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-22 21:58:29,866 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. [2018-11-22 21:58:29,867 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 [2018-11-22 21:58:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:58:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-22 21:58:29,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-22 21:58:29,868 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,868 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-22 21:58:29,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:58:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:58:29,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:58:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:58:29,898 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 [2018-11-22 21:58:29,898 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 22 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-22 21:58:29,916 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. [2018-11-22 21:58:29,916 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 [2018-11-22 21:58:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-22 21:58:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-22 21:58:29,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 1 letters. [2018-11-22 21:58:29,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 1 letters. [2018-11-22 21:58:29,917 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,917 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2018-11-22 21:58:29,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-22 21:58:29,918 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 40 transitions. [2018-11-22 21:58:29,918 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:58:29,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-11-22 21:58:29,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-22 21:58:29,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-22 21:58:29,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-22 21:58:29,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-22 21:58:29,919 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:58:29,919 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:58:29,919 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:58:29,919 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-22 21:58:29,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:58:29,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-22 21:58:29,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-22 21:58:29,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 09:58:29 BoogieIcfgContainer [2018-11-22 21:58:29,923 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-22 21:58:29,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:58:29,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:58:29,923 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:58:29,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:58:27" (3/4) ... [2018-11-22 21:58:29,926 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-22 21:58:29,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:58:29,927 INFO L168 Benchmark]: Toolchain (without parser) took 2477.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 961.9 MB in the beginning and 1.0 GB in the end (delta: -68.2 MB). Peak memory consumption was 69.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:58:29,927 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:58:29,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.71 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:58:29,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.29 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:58:29,929 INFO L168 Benchmark]: Boogie Preprocessor took 10.90 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:58:29,929 INFO L168 Benchmark]: RCFGBuilder took 168.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:58:29,929 INFO L168 Benchmark]: BuchiAutomizer took 2122.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 90.9 MB). Peak memory consumption was 90.9 MB. Max. memory is 11.5 GB. [2018-11-22 21:58:29,930 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:58:29,932 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 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 152.71 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 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 17.29 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.90 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 168.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2122.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 90.9 MB). Peak memory consumption was 90.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 2.0s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 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, 50 SDs, 0 SdLazy, 47 SolverSat, 29 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: 91ms 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...