./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:50:57,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:57,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:57,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:57,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:57,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:57,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:57,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:57,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:57,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:57,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:57,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:57,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:57,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:57,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:57,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:57,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:57,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:57,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:57,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:57,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:57,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:57,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:57,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:57,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:57,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:57,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:57,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:57,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:57,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:57,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:57,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:57,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:57,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:57,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:57,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:57,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:57,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:57,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:57,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:57,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:57,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:50:57,768 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:57,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:57,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:57,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:57,780 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:57,780 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:50:57,781 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:50:57,781 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:50:57,781 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:50:57,781 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:50:57,782 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:50:57,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:57,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:50:57,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:50:57,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:57,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:50:57,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:50:57,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:50:57,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:57,784 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:50:57,784 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:57,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:50:57,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:57,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:57,785 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:50:57,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:57,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:50:57,786 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:50:57,787 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:50:57,788 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_63898781-1ea9-41c5-bc47-e3879ef521e0/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 -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2019-11-25 08:50:57,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:57,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:57,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:57,986 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:57,988 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:57,988 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-11-25 08:50:58,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/data/fd014deaf/123138169ae54371a72963fb6a785ee7/FLAG8fc2d92ec [2019-11-25 08:50:58,378 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:58,378 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-11-25 08:50:58,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/data/fd014deaf/123138169ae54371a72963fb6a785ee7/FLAG8fc2d92ec [2019-11-25 08:50:58,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/data/fd014deaf/123138169ae54371a72963fb6a785ee7 [2019-11-25 08:50:58,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:58,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:58,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:58,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:58,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:58,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:58" (1/1) ... [2019-11-25 08:50:58,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76eb531a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:58, skipping insertion in model container [2019-11-25 08:50:58,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:58" (1/1) ... [2019-11-25 08:50:58,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:58,818 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:59,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:59,024 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:59,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:59,107 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:59,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59 WrapperNode [2019-11-25 08:50:59,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:59,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:59,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:59,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:59,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:59,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:59,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:59,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:59,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... [2019-11-25 08:50:59,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:59,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:59,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:59,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:59,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:59,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:59,358 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:59,359 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:50:59,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:59 BoogieIcfgContainer [2019-11-25 08:50:59,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:59,360 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:50:59,360 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:50:59,366 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:50:59,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:59,368 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:50:58" (1/3) ... [2019-11-25 08:50:59,369 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b34c32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:50:59, skipping insertion in model container [2019-11-25 08:50:59,369 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:59,370 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:59" (2/3) ... [2019-11-25 08:50:59,370 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b34c32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:50:59, skipping insertion in model container [2019-11-25 08:50:59,371 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:50:59,371 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:59" (3/3) ... [2019-11-25 08:50:59,373 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-11-25 08:50:59,419 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:50:59,419 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:50:59,419 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:50:59,419 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:59,419 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:59,420 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:50:59,420 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:59,420 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:50:59,432 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-25 08:50:59,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:50:59,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:59,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:59,456 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:50:59,456 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:50:59,456 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:50:59,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-25 08:50:59,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:50:59,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:50:59,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:50:59,458 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:50:59,458 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:50:59,465 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2019-11-25 08:50:59,466 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2019-11-25 08:50:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:59,472 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:50:59,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:59,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582572380] [2019-11-25 08:50:59,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,565 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:59,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2019-11-25 08:50:59,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:59,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717172419] [2019-11-25 08:50:59,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,579 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:59,580 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2019-11-25 08:50:59,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:59,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741746797] [2019-11-25 08:50:59,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:59,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:59,644 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:59,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:59,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:59,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:59,645 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:50:59,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:59,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:59,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:59,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2019-11-25 08:50:59,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:59,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:59,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,798 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:50:59,799 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:59,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:59,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:59,824 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_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:59,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:59,846 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:59,846 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_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:59,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:59,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:59,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:59,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:59,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:50:59,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:50:59,881 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:50:59,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:50:59,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:50:59,912 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:50:59,915 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:50:59,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:50:59,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:50:59,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:50:59,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:50:59,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:50:59,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:50:59,916 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:50:59,916 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2019-11-25 08:50:59,916 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:50:59,916 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:50:59,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:50:59,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,034 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:00,039 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:51:00,050 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 [2019-11-25 08:51:00,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,058 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:00,059 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:00,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,078 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 [2019-11-25 08:51:00,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,084 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:00,084 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,106 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 [2019-11-25 08:51:00,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:00,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,113 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,130 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 [2019-11-25 08:51:00,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:00,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,141 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,156 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 [2019-11-25 08:51:00,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:00,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,168 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:00,172 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:00,172 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_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,187 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:00,187 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:00,187 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:00,188 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-11-25 08:51:00,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:00,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:00,242 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:00,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:00,278 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 [2019-11-25 08:51:00,280 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-25 08:51:00,333 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2019-11-25 08:51:00,334 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 [2019-11-25 08:51:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:51:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2019-11-25 08:51:00,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-25 08:51:00,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:00,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:51:00,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:00,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-25 08:51:00,339 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:00,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2019-11-25 08:51:00,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:51:00,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2019-11-25 08:51:00,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:51:00,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:51:00,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-25 08:51:00,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:00,350 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:51:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-25 08:51:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-25 08:51:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:51:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-25 08:51:00,374 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:51:00,374 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:51:00,374 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:51:00,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-25 08:51:00,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:51:00,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:00,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:00,375 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:51:00,376 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:00,376 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2019-11-25 08:51:00,376 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2019-11-25 08:51:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,376 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2019-11-25 08:51:00,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840552012] [2019-11-25 08:51:00,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,389 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,390 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-11-25 08:51:00,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70355402] [2019-11-25 08:51:00,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,397 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2019-11-25 08:51:00,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:00,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440943380] [2019-11-25 08:51:00,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:00,425 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:00,463 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:00,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:00,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:00,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:00,463 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:00,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:00,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:00,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2019-11-25 08:51:00,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:00,464 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:00,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:00,538 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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 [2019-11-25 08:51:00,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:00,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,551 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_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:00,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,567 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,593 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:00,604 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/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) [2019-11-25 08:51:00,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:00,624 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:00,650 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,770 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:00,771 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:00,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:00,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:00,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:00,772 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:00,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:00,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:00,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2019-11-25 08:51:00,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:00,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:00,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:00,847 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:00,847 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,858 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 [2019-11-25 08:51:00,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:00,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:00,871 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,890 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 [2019-11-25 08:51:00,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,896 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:00,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,908 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,936 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 [2019-11-25 08:51:00,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,938 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:00,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,939 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:00,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:00,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:00,958 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 [2019-11-25 08:51:00,961 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:00,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:00,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:00,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:00,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:00,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:00,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:00,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:00,994 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:00,994 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,003 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:01,004 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:01,004 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:01,004 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,011 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,055 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:01,056 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 [2019-11-25 08:51:01,057 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2019-11-25 08:51:01,076 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2019-11-25 08:51:01,078 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 [2019-11-25 08:51:01,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:51:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-11-25 08:51:01,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-25 08:51:01,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:51:01,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:51:01,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2019-11-25 08:51:01,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:51:01,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2019-11-25 08:51:01,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:51:01,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:51:01,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2019-11-25 08:51:01,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:01,083 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-25 08:51:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2019-11-25 08:51:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-25 08:51:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-25 08:51:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2019-11-25 08:51:01,090 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-11-25 08:51:01,090 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-11-25 08:51:01,090 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:51:01,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2019-11-25 08:51:01,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:51:01,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:01,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:01,095 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:01,095 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:01,095 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2019-11-25 08:51:01,096 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2019-11-25 08:51:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,096 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2019-11-25 08:51:01,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816085750] [2019-11-25 08:51:01,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2019-11-25 08:51:01,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989948216] [2019-11-25 08:51:01,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,149 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2019-11-25 08:51:01,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317487923] [2019-11-25 08:51:01,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,188 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,224 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:01,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:01,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:01,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:01,224 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:01,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:01,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:01,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2019-11-25 08:51:01,225 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:01,225 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:01,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:01,355 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:01,363 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:01,379 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,529 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:01,531 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:01,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:01,531 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:01,531 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:01,531 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:01,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,531 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:01,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:01,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2019-11-25 08:51:01,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:01,532 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:01,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,671 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:01,671 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,677 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 [2019-11-25 08:51:01,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:01,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:01,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:01,680 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:01,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:01,683 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:01,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,689 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:01,694 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:01,694 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:01,699 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:01,699 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:01,700 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:01,700 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:51:01,702 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:01,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:01,771 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 [2019-11-25 08:51:01,771 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-25 08:51:01,802 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2019-11-25 08:51:01,804 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 [2019-11-25 08:51:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:51:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-25 08:51:01,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2019-11-25 08:51:01,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-25 08:51:01,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-25 08:51:01,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:01,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2019-11-25 08:51:01,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:51:01,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2019-11-25 08:51:01,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-25 08:51:01,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-25 08:51:01,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2019-11-25 08:51:01,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:01,813 INFO L688 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2019-11-25 08:51:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2019-11-25 08:51:01,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-25 08:51:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-25 08:51:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2019-11-25 08:51:01,823 INFO L711 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-11-25 08:51:01,823 INFO L591 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-11-25 08:51:01,823 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:51:01,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2019-11-25 08:51:01,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:51:01,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:01,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:01,830 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-25 08:51:01,830 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:51:01,830 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2019-11-25 08:51:01,830 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2019-11-25 08:51:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,831 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2019-11-25 08:51:01,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287460060] [2019-11-25 08:51:01,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:51:01,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287460060] [2019-11-25 08:51:01,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:01,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:51:01,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242719594] [2019-11-25 08:51:01,887 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:01,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2019-11-25 08:51:01,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:01,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860994944] [2019-11-25 08:51:01,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:01,895 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:01,936 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:01,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:01,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:01,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:01,936 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:01,936 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:01,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:01,937 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:01,937 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2019-11-25 08:51:01,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:01,937 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:01,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:01,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,089 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,089 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,096 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:02,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=7} Honda state: {ULTIMATE.start_main_#t~nondet1=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,105 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:02,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:02,165 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:02,167 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,167 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,167 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,167 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,167 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:02,168 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,168 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,168 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,168 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2019-11-25 08:51:02,168 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,168 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,307 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,307 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,311 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 [2019-11-25 08:51:02,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:02,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:02,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:02,313 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:51:02,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:02,314 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:51:02,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,316 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,320 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 [2019-11-25 08:51:02,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:02,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:02,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:02,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:02,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:02,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:02,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:02,325 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:02,328 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:02,328 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,332 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:02,332 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:02,332 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:02,332 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,334 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,388 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 [2019-11-25 08:51:02,388 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-25 08:51:02,409 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2019-11-25 08:51:02,411 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 [2019-11-25 08:51:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2019-11-25 08:51:02,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-25 08:51:02,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2019-11-25 08:51:02,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2019-11-25 08:51:02,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2019-11-25 08:51:02,416 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-25 08:51:02,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2019-11-25 08:51:02,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-25 08:51:02,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-25 08:51:02,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2019-11-25 08:51:02,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:02,417 INFO L688 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2019-11-25 08:51:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2019-11-25 08:51:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2019-11-25 08:51:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-25 08:51:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2019-11-25 08:51:02,421 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2019-11-25 08:51:02,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:02,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:51:02,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:51:02,424 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2019-11-25 08:51:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:02,446 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2019-11-25 08:51:02,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:51:02,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2019-11-25 08:51:02,448 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-25 08:51:02,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2019-11-25 08:51:02,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:51:02,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:51:02,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2019-11-25 08:51:02,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:02,449 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-11-25 08:51:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2019-11-25 08:51:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-25 08:51:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-25 08:51:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2019-11-25 08:51:02,452 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-11-25 08:51:02,452 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-11-25 08:51:02,452 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:51:02,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2019-11-25 08:51:02,452 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-25 08:51:02,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:02,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:02,453 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:51:02,453 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:02,453 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2019-11-25 08:51:02,453 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2019-11-25 08:51:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2019-11-25 08:51:02,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081389420] [2019-11-25 08:51:02,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,472 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-11-25 08:51:02,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053112589] [2019-11-25 08:51:02,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,482 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2019-11-25 08:51:02,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599016979] [2019-11-25 08:51:02,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,502 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,517 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,518 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:02,518 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2019-11-25 08:51:02,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,518 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,590 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,591 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:02,594 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:02,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:02,754 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:02,755 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:02,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:02,756 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:02,756 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:02,756 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:02,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:02,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:02,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2019-11-25 08:51:02,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:02,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:02,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:02,819 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:02,819 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:02,826 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 [2019-11-25 08:51:02,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:02,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:02,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:02,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:02,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:02,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:02,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,832 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:02,835 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:02,835 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:02,838 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:02,838 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:02,838 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:02,838 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-11-25 08:51:02,840 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,866 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,866 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 [2019-11-25 08:51:02,866 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-11-25 08:51:02,877 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2019-11-25 08:51:02,878 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 [2019-11-25 08:51:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:51:02,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-25 08:51:02,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-25 08:51:02,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,879 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,905 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,906 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:51:02,906 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-11-25 08:51:02,914 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2019-11-25 08:51:02,914 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 [2019-11-25 08:51:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:51:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-25 08:51:02,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-25 08:51:02,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,915 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:02,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:02,935 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:02,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:02,935 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:51:02,935 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-11-25 08:51:02,949 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2019-11-25 08:51:02,950 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 [2019-11-25 08:51:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:51:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-25 08:51:02,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-25 08:51:02,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-25 08:51:02,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-25 08:51:02,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:02,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2019-11-25 08:51:02,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:02,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2019-11-25 08:51:02,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:51:02,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:51:02,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2019-11-25 08:51:02,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:02,954 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-25 08:51:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2019-11-25 08:51:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-25 08:51:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:51:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2019-11-25 08:51:02,956 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-11-25 08:51:02,956 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-11-25 08:51:02,956 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:51:02,956 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2019-11-25 08:51:02,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:02,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:02,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:02,957 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2019-11-25 08:51:02,957 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:51:02,957 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2019-11-25 08:51:02,958 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2019-11-25 08:51:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2019-11-25 08:51:02,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736833717] [2019-11-25 08:51:02,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,973 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,974 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2019-11-25 08:51:02,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573960364] [2019-11-25 08:51:02,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:02,978 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2019-11-25 08:51:02,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:02,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413675355] [2019-11-25 08:51:02,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:51:03,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413675355] [2019-11-25 08:51:03,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446337360] [2019-11-25 08:51:03,014 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,039 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:51:03,039 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:03,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:51:03,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:51:03,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612825954] [2019-11-25 08:51:03,064 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:03,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:03,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:03,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:03,065 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:03,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:03,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:03,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2019-11-25 08:51:03,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:03,065 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:03,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,130 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:03,131 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:03,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:03,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:03,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:03,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:03,150 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:03,151 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:03,166 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:03,174 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:03,179 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:03,188 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,219 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:03,221 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:03,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:03,221 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:03,221 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:03,221 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:03,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:03,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:03,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2019-11-25 08:51:03,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:03,221 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:03,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,280 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:03,280 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,283 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 [2019-11-25 08:51:03,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:03,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:03,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:03,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:03,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:03,287 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:03,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,296 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 [2019-11-25 08:51:03,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:03,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:03,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:03,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:03,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:03,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:03,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:03,300 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,303 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 [2019-11-25 08:51:03,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:03,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:03,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:03,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:03,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:03,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:03,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:03,307 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:03,313 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:03,314 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,321 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:03,321 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:03,322 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:03,322 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:51:03,324 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,408 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,442 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 [2019-11-25 08:51:03,443 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-25 08:51:03,468 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2019-11-25 08:51:03,468 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 [2019-11-25 08:51:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:51:03,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-25 08:51:03,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-25 08:51:03,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2019-11-25 08:51:03,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:03,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2019-11-25 08:51:03,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:03,472 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2019-11-25 08:51:03,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:51:03,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:51:03,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2019-11-25 08:51:03,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,473 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2019-11-25 08:51:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2019-11-25 08:51:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-11-25 08:51:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-25 08:51:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2019-11-25 08:51:03,476 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2019-11-25 08:51:03,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:51:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:03,476 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2019-11-25 08:51:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:03,507 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-11-25 08:51:03,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:51:03,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2019-11-25 08:51:03,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:03,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2019-11-25 08:51:03,510 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:51:03,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:51:03,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2019-11-25 08:51:03,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:03,510 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2019-11-25 08:51:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2019-11-25 08:51:03,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2019-11-25 08:51:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-25 08:51:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2019-11-25 08:51:03,513 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2019-11-25 08:51:03,514 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2019-11-25 08:51:03,514 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:51:03,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2019-11-25 08:51:03,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:03,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:03,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:03,515 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2019-11-25 08:51:03,515 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:51:03,516 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2019-11-25 08:51:03,516 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2019-11-25 08:51:03,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,516 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2019-11-25 08:51:03,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834358280] [2019-11-25 08:51:03,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:03,534 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2019-11-25 08:51:03,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344199951] [2019-11-25 08:51:03,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:03,540 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:03,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,540 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2019-11-25 08:51:03,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:03,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558194570] [2019-11-25 08:51:03,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-25 08:51:03,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558194570] [2019-11-25 08:51:03,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322028199] [2019-11-25 08:51:03,604 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:51:03,639 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:51:03,639 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:51:03,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-25 08:51:03,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:51:03,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:51:03,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67825182] [2019-11-25 08:51:03,693 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:03,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:03,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:03,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:03,694 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:03,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,694 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:03,694 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:03,694 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2019-11-25 08:51:03,694 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:03,694 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:03,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,771 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:03,772 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:03,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:03,781 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:03,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:03,788 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:03,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:03,797 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,834 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:03,835 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:03,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:03,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:03,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:03,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:03,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:03,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:03,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2019-11-25 08:51:03,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:03,836 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:03,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:03,902 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:03,902 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,905 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 [2019-11-25 08:51:03,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:03,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:03,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:03,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:03,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:03,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:03,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:03,909 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:03,911 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:03,911 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:03,915 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:03,915 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:03,915 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:03,915 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:51:03,916 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:03,948 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:03,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:03,969 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 [2019-11-25 08:51:03,969 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-25 08:51:03,998 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2019-11-25 08:51:03,999 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 [2019-11-25 08:51:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:51:04,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2019-11-25 08:51:04,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,000 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,027 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,040 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:51:04,041 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-25 08:51:04,078 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2019-11-25 08:51:04,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-25 08:51:04,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2019-11-25 08:51:04,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2019-11-25 08:51:04,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2019-11-25 08:51:04,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2019-11-25 08:51:04,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:04,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2019-11-25 08:51:04,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:51:04,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:51:04,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2019-11-25 08:51:04,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:04,084 INFO L688 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2019-11-25 08:51:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2019-11-25 08:51:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2019-11-25 08:51:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-25 08:51:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2019-11-25 08:51:04,087 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2019-11-25 08:51:04,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:04,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:51:04,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:51:04,088 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2019-11-25 08:51:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:04,116 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2019-11-25 08:51:04,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:51:04,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2019-11-25 08:51:04,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:04,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2019-11-25 08:51:04,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:51:04,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:51:04,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2019-11-25 08:51:04,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:04,120 INFO L688 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-11-25 08:51:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2019-11-25 08:51:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2019-11-25 08:51:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-25 08:51:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2019-11-25 08:51:04,129 INFO L711 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-11-25 08:51:04,129 INFO L591 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-11-25 08:51:04,129 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-25 08:51:04,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2019-11-25 08:51:04,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:51:04,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:04,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:04,131 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2019-11-25 08:51:04,131 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:51:04,131 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2019-11-25 08:51:04,132 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2019-11-25 08:51:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2019-11-25 08:51:04,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372965570] [2019-11-25 08:51:04,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:04,152 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:04,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,153 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2019-11-25 08:51:04,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012609855] [2019-11-25 08:51:04,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:04,157 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2019-11-25 08:51:04,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:04,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687629524] [2019-11-25 08:51:04,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:04,175 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:04,194 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:04,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:04,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:04,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:04,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:04,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:04,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:04,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2019-11-25 08:51:04,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:04,196 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:04,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,272 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:04,272 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:04,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:04,279 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:04,279 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:04,284 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:04,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:04,315 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:04,316 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:04,316 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:04,316 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:04,316 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:04,317 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:04,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:04,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:04,317 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2019-11-25 08:51:04,317 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:04,317 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:04,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:04,392 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:04,392 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,398 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 [2019-11-25 08:51:04,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:04,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:04,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:04,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:04,403 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:04,403 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:04,409 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:51:04,415 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 [2019-11-25 08:51:04,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:04,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:04,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:04,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:04,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:04,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:04,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,421 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:04,426 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:04,426 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63898781-1ea9-41c5-bc47-e3879ef521e0/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:04,434 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:04,434 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:04,434 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:04,434 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:51:04,435 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,464 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,478 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 [2019-11-25 08:51:04,479 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-11-25 08:51:04,502 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2019-11-25 08:51:04,503 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 [2019-11-25 08:51:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:51:04,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-25 08:51:04,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,504 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,538 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Exception during sending of exit command (exit): Stream closed [2019-11-25 08:51:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,580 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:51:04,580 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-11-25 08:51:04,610 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2019-11-25 08:51:04,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-25 08:51:04,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-25 08:51:04,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,611 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:51:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:04,648 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:04,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:04,661 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:51:04,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-11-25 08:51:04,676 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2019-11-25 08:51:04,677 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 [2019-11-25 08:51:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:51:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:51:04,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-25 08:51:04,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2019-11-25 08:51:04,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2019-11-25 08:51:04,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:04,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2019-11-25 08:51:04,680 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:51:04,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2019-11-25 08:51:04,681 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:51:04,681 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:51:04,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:51:04,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:51:04,681 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:04,681 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:04,681 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:04,681 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-25 08:51:04,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:51:04,681 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:51:04,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:51:04,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:51:04 BoogieIcfgContainer [2019-11-25 08:51:04,686 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:51:04,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:51:04,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:51:04,687 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:51:04,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:59" (3/4) ... [2019-11-25 08:51:04,690 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:51:04,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:51:04,692 INFO L168 Benchmark]: Toolchain (without parser) took 5910.48 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 345.0 MB). Free memory was 944.7 MB in the beginning and 1.3 GB in the end (delta: -362.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:04,693 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:04,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:04,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:04,698 INFO L168 Benchmark]: Boogie Preprocessor took 13.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:04,699 INFO L168 Benchmark]: RCFGBuilder took 203.88 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:04,699 INFO L168 Benchmark]: BuchiAutomizer took 5325.89 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.2 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -175.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:04,699 INFO L168 Benchmark]: Witness Printer took 3.88 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:04,702 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 326.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 203.88 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5325.89 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.2 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -175.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.88 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...