./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/down.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/down.i -s /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52aef301dacdb8760f69e679392209c245be6469 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:48,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:48,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:48,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:48,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:48,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:48,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:48,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:48,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:48,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:48,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:48,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:48,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:48,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:48,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:48,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:48,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:48,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:48,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:48,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:48,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:48,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:48,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:48,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:48,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:48,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:48,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:48,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:48,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:48,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:48,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:48,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:48,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:48,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:48,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:48,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:48,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:48,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:48,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:48,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:48,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:48,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:55:48,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:48,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:48,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:48,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:48,685 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:48,685 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:55:48,685 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:55:48,685 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:55:48,686 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:55:48,686 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:55:48,686 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:55:48,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:48,686 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:48,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:48,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:48,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:48,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:48,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:55:48,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:55:48,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:55:48,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:48,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:48,688 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:55:48,688 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:48,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:55:48,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:48,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:48,689 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:55:48,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:48,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:48,689 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:55:48,690 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:55:48,691 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52aef301dacdb8760f69e679392209c245be6469 [2019-10-22 08:55:48,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:48,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:48,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:48,746 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:48,746 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:48,747 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/down.i [2019-10-22 08:55:48,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/data/6e5c974b7/90d33fd53e5143498e2d105d6d28dc3b/FLAGefc910ae2 [2019-10-22 08:55:49,155 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:49,155 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/sv-benchmarks/c/loop-invgen/down.i [2019-10-22 08:55:49,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/data/6e5c974b7/90d33fd53e5143498e2d105d6d28dc3b/FLAGefc910ae2 [2019-10-22 08:55:49,564 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/data/6e5c974b7/90d33fd53e5143498e2d105d6d28dc3b [2019-10-22 08:55:49,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:49,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:49,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:49,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:49,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:49,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e98db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49, skipping insertion in model container [2019-10-22 08:55:49,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,583 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:49,599 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:49,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:49,721 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:49,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:49,816 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:49,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49 WrapperNode [2019-10-22 08:55:49,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:49,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:49,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:49,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:49,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:49,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:49,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:49,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:49,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:49,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:49,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:49,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:49,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:49,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:50,136 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:50,137 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 08:55:50,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:50 BoogieIcfgContainer [2019-10-22 08:55:50,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:50,139 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:55:50,139 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:55:50,142 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:55:50,143 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:50,143 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:55:49" (1/3) ... [2019-10-22 08:55:50,144 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ccbb766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:50, skipping insertion in model container [2019-10-22 08:55:50,145 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:50,145 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (2/3) ... [2019-10-22 08:55:50,145 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ccbb766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:50, skipping insertion in model container [2019-10-22 08:55:50,145 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:50,145 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:50" (3/3) ... [2019-10-22 08:55:50,159 INFO L371 chiAutomizerObserver]: Analyzing ICFG down.i [2019-10-22 08:55:50,230 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:55:50,230 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:55:50,230 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:55:50,230 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:50,231 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:50,231 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:55:50,231 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:50,231 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:55:50,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-10-22 08:55:50,265 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-10-22 08:55:50,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:50,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:50,272 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:55:50,273 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:55:50,273 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:55:50,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-10-22 08:55:50,274 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-10-22 08:55:50,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:50,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:50,274 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:55:50,275 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:55:50,282 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_#t~post3, main_#t~post4, main_#t~post5, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L15-2true [2019-10-22 08:55:50,283 INFO L793 eck$LassoCheckResult]: Loop: 10#L15-2true assume !!(main_~i~0 < main_~n~0);main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2;main_#t~post3 := main_~k~0;main_~k~0 := 1 + main_#t~post3;havoc main_#t~post3; 10#L15-2true [2019-10-22 08:55:50,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:55:50,296 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:50,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430780953] [2019-10-22 08:55:50,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:50,365 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:50,367 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-10-22 08:55:50,367 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:50,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673954258] [2019-10-22 08:55:50,367 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:50,380 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:50,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:55:50,381 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:50,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22123053] [2019-10-22 08:55:50,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:50,392 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:50,456 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:50,457 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:50,457 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:50,457 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:50,457 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:50,457 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:50,457 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:50,457 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:50,457 INFO L131 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2019-10-22 08:55:50,458 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:50,458 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:50,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,541 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:50,542 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:50,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:50,556 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:50,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:55:50,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:50,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:50,576 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:50,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:50,591 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:50,718 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:50,720 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:50,720 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:50,720 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:50,720 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:50,720 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:50,720 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:50,721 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:50,721 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:50,721 INFO L131 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2019-10-22 08:55:50,721 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:50,721 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:50,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:50,815 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:50,820 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:50,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:50,823 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:50,823 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:50,824 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:50,824 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:50,824 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:50,826 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:50,826 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:50,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:55:50,830 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:50,831 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:50,831 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:50,836 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:50,837 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:50,837 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:50,837 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:50,838 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:50,843 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:50,851 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:55:50,852 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:55:50,854 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:50,855 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:50,855 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:50,855 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:55:50,858 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:50,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:50,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:50,937 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:50,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:50,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:55:50,953 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 2 states. [2019-10-22 08:55:50,995 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 2 states. Result 30 states and 40 transitions. Complement of second has 5 states. [2019-10-22 08:55:50,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:55:50,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:55:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2019-10-22 08:55:51,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 1 letters. Loop has 1 letters. [2019-10-22 08:55:51,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:51,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 08:55:51,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:51,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:55:51,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:51,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 40 transitions. [2019-10-22 08:55:51,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:55:51,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 7 states and 9 transitions. [2019-10-22 08:55:51,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:55:51,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:55:51,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2019-10-22 08:55:51,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:51,015 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-10-22 08:55:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2019-10-22 08:55:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 08:55:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:55:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-10-22 08:55:51,041 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-10-22 08:55:51,042 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-10-22 08:55:51,042 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:55:51,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-10-22 08:55:51,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:55:51,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:51,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:51,043 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:55:51,044 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:51,044 INFO L791 eck$LassoCheckResult]: Stem: 70#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_#t~post3, main_#t~post4, main_#t~post5, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; 71#L15-2 assume !(main_~i~0 < main_~n~0); 72#L15-3 main_~j~0 := main_~n~0; 73#L20-2 [2019-10-22 08:55:51,044 INFO L793 eck$LassoCheckResult]: Loop: 73#L20-2 assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 75#L4 assume !(0 == __VERIFIER_assert_~cond); 74#L4-2 main_#t~post4 := main_~j~0;main_~j~0 := main_#t~post4 - 1;havoc main_#t~post4;main_#t~post5 := main_~k~0;main_~k~0 := main_#t~post5 - 1;havoc main_#t~post5; 73#L20-2 [2019-10-22 08:55:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 31014, now seen corresponding path program 1 times [2019-10-22 08:55:51,045 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053221061] [2019-10-22 08:55:51,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:51,055 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:51,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 52857, now seen corresponding path program 1 times [2019-10-22 08:55:51,056 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270129763] [2019-10-22 08:55:51,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:51,078 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,079 INFO L82 PathProgramCache]: Analyzing trace with hash 923961140, now seen corresponding path program 1 times [2019-10-22 08:55:51,079 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,080 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323788297] [2019-10-22 08:55:51,080 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323788297] [2019-10-22 08:55:51,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:51,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902940782] [2019-10-22 08:55:51,271 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:51,271 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:51,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:51,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:51,272 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:51,272 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:51,272 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:51,272 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:51,272 INFO L131 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2019-10-22 08:55:51,272 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:51,272 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:51,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,377 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:51,378 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:51,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:51,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:51,383 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:55:51,383 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:51,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:51,391 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_227da52c-7c7f-40a1-817c-187f82e5acbc/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:51,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:51,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:51,407 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:51,408 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:51,409 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:51,409 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:51,409 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:51,409 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:51,409 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:51,409 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:51,409 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:51,409 INFO L131 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2019-10-22 08:55:51,409 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:51,409 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:51,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:51,485 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:51,485 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:51,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:55:51,486 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:51,486 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:51,486 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:51,487 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:51,487 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:51,488 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:51,488 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:51,495 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:51,498 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:51,499 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:55:51,499 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:51,499 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:51,500 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:51,500 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2019-10-22 08:55:51,500 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:51,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:51,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,523 WARN L254 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:55:51,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:51,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,560 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:55:51,560 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-10-22 08:55:51,595 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 10 states and 13 transitions. Complement of second has 6 states. [2019-10-22 08:55:51,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:55:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:55:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-10-22 08:55:51,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:55:51,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:51,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:55:51,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:51,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:55:51,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:51,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-10-22 08:55:51,598 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:51,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-10-22 08:55:51,599 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:55:51,599 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:55:51,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:55:51,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:51,599 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:51,599 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:51,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:51,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:51,603 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 08:55:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:51,606 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:55:51,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:51,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:55:51,606 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:51,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:51,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:55:51,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:55:51,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:55:51,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:51,607 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:51,607 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:51,607 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:51,608 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:55:51,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:51,608 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:51,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:55:51,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:55:51 BoogieIcfgContainer [2019-10-22 08:55:51,614 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:55:51,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:51,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:51,614 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:51,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:50" (3/4) ... [2019-10-22 08:55:51,618 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:55:51,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:51,620 INFO L168 Benchmark]: Toolchain (without parser) took 2052.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 943.1 MB in the beginning and 975.4 MB in the end (delta: -32.3 MB). Peak memory consumption was 107.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,621 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:51,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -197.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,622 INFO L168 Benchmark]: Boogie Preprocessor took 21.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,623 INFO L168 Benchmark]: RCFGBuilder took 263.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,623 INFO L168 Benchmark]: BuchiAutomizer took 1475.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.7 MB in the end (delta: 141.8 MB). Peak memory consumption was 141.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,624 INFO L168 Benchmark]: Witness Printer took 4.07 ms. Allocated memory is still 1.2 GB. Free memory was 976.7 MB in the beginning and 975.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:51,626 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -197.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 263.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1475.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.7 MB in the end (delta: 141.8 MB). Peak memory consumption was 141.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.07 ms. Allocated memory is still 1.2 GB. Free memory was 976.7 MB in the beginning and 975.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 14 SDslu, 8 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp69 ukn100 mio100 lsp100 div100 bol100 ite118 ukn100 eq166 hnf92 smp77 dnf98 smp100 tf110 neg98 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...