./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Nested-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Nested-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/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 64bit --witnessprinter.graph.data.programhash 5f36db653fc1ba72ccbb6cf21df7b84599ee28f0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:24:25,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:24:25,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:24:25,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:24:25,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:24:25,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:24:25,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:24:25,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:24:25,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:24:25,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:24:25,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:24:25,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:24:25,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:24:25,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:24:25,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:24:25,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:24:25,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:24:25,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:24:25,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:24:25,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:24:25,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:24:25,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:24:25,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:24:25,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:24:25,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:24:25,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:24:25,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:24:25,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:24:25,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:24:25,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:24:25,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:24:25,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:24:25,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:24:25,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:24:25,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:24:25,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:24:25,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:24:25,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:24:25,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:24:25,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:24:25,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:24:25,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:24:25,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:24:25,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:24:25,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:24:25,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:24:25,720 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:24:25,721 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:24:25,721 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:24:25,721 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:24:25,721 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:24:25,721 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:24:25,722 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:24:25,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:24:25,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:24:25,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:24:25,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:24:25,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:24:25,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:24:25,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:24:25,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:24:25,723 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:24:25,724 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:24:25,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:24:25,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:24:25,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:24:25,724 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:24:25,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:24:25,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:24:25,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:24:25,725 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:24:25,726 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:24:25,726 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f36db653fc1ba72ccbb6cf21df7b84599ee28f0 [2019-12-07 18:24:25,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:24:25,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:24:25,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:24:25,857 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:24:25,857 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:24:25,858 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Nested-2.c [2019-12-07 18:24:25,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/data/ec9e5c68d/ee11da640ce643d1b7ae98bebf460f9c/FLAGe6ba22ab7 [2019-12-07 18:24:26,292 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:24:26,292 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/sv-benchmarks/c/termination-restricted-15/Nested-2.c [2019-12-07 18:24:26,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/data/ec9e5c68d/ee11da640ce643d1b7ae98bebf460f9c/FLAGe6ba22ab7 [2019-12-07 18:24:26,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/data/ec9e5c68d/ee11da640ce643d1b7ae98bebf460f9c [2019-12-07 18:24:26,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:24:26,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:24:26,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:24:26,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:24:26,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:24:26,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c2a685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26, skipping insertion in model container [2019-12-07 18:24:26,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:24:26,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:24:26,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:24:26,424 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:24:26,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:24:26,475 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:24:26,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26 WrapperNode [2019-12-07 18:24:26,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:24:26,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:24:26,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:24:26,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:24:26,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:24:26,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:24:26,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:24:26,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:24:26,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... [2019-12-07 18:24:26,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:24:26,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:24:26,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:24:26,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:24:26,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:24:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:24:26,640 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:24:26,641 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:24:26,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:26 BoogieIcfgContainer [2019-12-07 18:24:26,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:24:26,642 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:24:26,642 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:24:26,644 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:24:26,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:24:26,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:24:26" (1/3) ... [2019-12-07 18:24:26,645 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@307aaf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:24:26, skipping insertion in model container [2019-12-07 18:24:26,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:24:26,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:26" (2/3) ... [2019-12-07 18:24:26,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@307aaf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:24:26, skipping insertion in model container [2019-12-07 18:24:26,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:24:26,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:26" (3/3) ... [2019-12-07 18:24:26,647 INFO L371 chiAutomizerObserver]: Analyzing ICFG Nested-2.c [2019-12-07 18:24:26,676 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:24:26,676 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:24:26,676 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:24:26,677 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:24:26,677 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:24:26,677 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:24:26,677 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:24:26,677 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:24:26,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:24:26,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:24:26,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:24:26,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:24:26,702 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:24:26,703 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:24:26,703 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:24:26,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:24:26,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:24:26,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:24:26,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:24:26,704 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:24:26,704 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:24:26,708 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0;main_~j~0 := 3; 9#L11-2true [2019-12-07 18:24:26,709 INFO L796 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~i~0 < 10); 3#L12-2true assume !(main_~j~0 < 12); 10#L12-3true main_~i~0 := 1 + main_~i~0; 9#L11-2true [2019-12-07 18:24:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:26,712 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 18:24:26,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:26,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372859309] [2019-12-07 18:24:26,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:26,779 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:26,780 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 18:24:26,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:26,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006388559] [2019-12-07 18:24:26,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:26,789 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-12-07 18:24:26,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:26,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274933414] [2019-12-07 18:24:26,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:26,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274933414] [2019-12-07 18:24:26,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:26,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:24:26,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795910189] [2019-12-07 18:24:26,856 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:24:26,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:24:26,856 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:24:26,856 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:24:26,856 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:24:26,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:24:26,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:24:26,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2019-12-07 18:24:26,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:24:26,857 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:24:26,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:26,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:26,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:26,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:26,950 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:24:26,951 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:24:26,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:24:26,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:24:26,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:24:26,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:24:26,973 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:24:26,973 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:24:26,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:24:26,980 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:24:26,980 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:24:26,984 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:24:26,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:24:26,998 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:24:26,999 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:24:26,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:24:26,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:24:26,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:24:26,999 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:24:26,999 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:26,999 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:24:26,999 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:24:27,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2019-12-07 18:24:27,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:24:27,000 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:24:27,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,056 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:24:27,059 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,063 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:24:27,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:24:27,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:24:27,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:24:27,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:24:27,070 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:24:27,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:24:27,076 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:24:27,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:24:27,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:24:27,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:24:27,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:24:27,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:24:27,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:24:27,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:24:27,085 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:24:27,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:24:27,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:24:27,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:24:27,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:24:27,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:24:27,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:24:27,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:24:27,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:24:27,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:24:27,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:24:27,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:24:27,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:24:27,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:24:27,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:24:27,111 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:24:27,114 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:24:27,114 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,118 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:24:27,118 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:24:27,118 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:24:27,119 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2019-12-07 18:24:27,122 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:24:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,149 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:24:27,150 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,155 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:24:27,156 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:27,175 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:24:27,176 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 18:24:27,203 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-12-07 18:24:27,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:24:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:24:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-12-07 18:24:27,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-12-07 18:24:27,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:24:27,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 18:24:27,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:24:27,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-12-07 18:24:27,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:24:27,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-12-07 18:24:27,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:24:27,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-12-07 18:24:27,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 18:24:27,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 18:24:27,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 18:24:27,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:24:27,213 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 18:24:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 18:24:27,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-12-07 18:24:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:24:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-12-07 18:24:27,230 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-12-07 18:24:27,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:27,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:24:27,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:24:27,233 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 3 states. [2019-12-07 18:24:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:27,239 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2019-12-07 18:24:27,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:24:27,240 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2019-12-07 18:24:27,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:24:27,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2019-12-07 18:24:27,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 18:24:27,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 18:24:27,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 18:24:27,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:24:27,241 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 18:24:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 18:24:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 18:24:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 18:24:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 18:24:27,242 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 18:24:27,242 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 18:24:27,242 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:24:27,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 18:24:27,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:24:27,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:24:27,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:24:27,243 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:24:27,243 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:24:27,243 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0;main_~j~0 := 3; 89#L11-2 assume !!(main_~i~0 < 10); 85#L12-2 [2019-12-07 18:24:27,243 INFO L796 eck$LassoCheckResult]: Loop: 85#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~j~0 := 2 + main_~j~0; 85#L12-2 [2019-12-07 18:24:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 18:24:27,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:27,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883687430] [2019-12-07 18:24:27,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:27,247 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:27,248 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 18:24:27,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:27,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534273859] [2019-12-07 18:24:27,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:27,252 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:27,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:27,252 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 18:24:27,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:27,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608081775] [2019-12-07 18:24:27,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:27,257 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:27,265 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:24:27,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:24:27,266 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:24:27,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:24:27,266 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:24:27,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:24:27,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:24:27,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2019-12-07 18:24:27,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:24:27,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:24:27,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,302 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:24:27,302 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:24:27,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:24:27,313 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:24:27,314 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:24:27,319 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:24:27,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:24:27,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:24:27,333 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:24:27,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:24:27,333 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:24:27,333 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:24:27,333 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:24:27,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:24:27,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:24:27,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2019-12-07 18:24:27,334 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:24:27,334 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:24:27,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:24:27,366 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:24:27,366 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,371 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:24:27,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:24:27,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:24:27,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:24:27,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:24:27,374 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:24:27,374 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:24:27,378 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,384 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:24:27,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:24:27,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:24:27,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:24:27,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:24:27,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:24:27,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:24:27,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:24:27,388 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:24:27,391 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:24:27,391 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5dc048f-2389-4376-b422-103219421b85/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:27,399 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:24:27,399 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:24:27,399 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:24:27,399 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-12-07 18:24:27,401 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:24:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,422 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:24:27,422 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:27,425 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:24:27,426 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:24:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:27,426 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 [2019-12-07 18:24:27,426 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-12-07 18:24:27,432 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 14 states and 19 transitions. Complement of second has 4 states. [2019-12-07 18:24:27,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:24:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:24:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 18:24:27,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 18:24:27,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:24:27,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 18:24:27,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:24:27,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:24:27,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:24:27,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-12-07 18:24:27,434 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:24:27,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2019-12-07 18:24:27,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:24:27,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:24:27,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:24:27,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:24:27,435 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:24:27,435 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:24:27,435 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:24:27,435 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:24:27,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:24:27,435 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:24:27,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:24:27,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:24:27 BoogieIcfgContainer [2019-12-07 18:24:27,440 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:24:27,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:24:27,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:24:27,440 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:24:27,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:26" (3/4) ... [2019-12-07 18:24:27,443 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:24:27,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:24:27,445 INFO L168 Benchmark]: Toolchain (without parser) took 1136.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 939.3 MB in the beginning and 925.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:27,445 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:27,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:27,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:27,446 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:27,447 INFO L168 Benchmark]: RCFGBuilder took 133.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:27,447 INFO L168 Benchmark]: BuchiAutomizer took 798.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 925.0 MB in the end (delta: 162.9 MB). Peak memory consumption was 162.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:27,447 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 1.1 GB. Free memory is still 925.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:27,450 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 133.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 798.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 925.0 MB in the end (delta: 162.9 MB). Peak memory consumption was 162.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.11 ms. Allocated memory is still 1.1 GB. Free memory is still 925.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 5 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 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: 14 SDtfs, 13 SDslu, 12 SDs, 0 SdLazy, 12 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...