./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/a.10.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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/a.10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 8d0216d6bf8bf4f618f739d27f28d08a28da9c3b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:52:34,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:34,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:34,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:34,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:34,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:34,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:34,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:34,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:34,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:34,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:34,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:34,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:34,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:34,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:34,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:34,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:34,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:34,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:34,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:34,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:34,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:34,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:34,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:34,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:34,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:34,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:34,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:34,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:34,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:34,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:34,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:34,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:34,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:34,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:34,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:34,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:34,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:34,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:34,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:34,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:34,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:52:34,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:34,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:34,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:34,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:34,755 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:34,756 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:52:34,756 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:52:34,756 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:52:34,756 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:52:34,757 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:52:34,757 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:52:34,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:34,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:52:34,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:34,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:34,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:52:34,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:52:34,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:52:34,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:34,759 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:52:34,759 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:34,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:52:34,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:34,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:34,760 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:52:34,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:34,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:34,760 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:52:34,761 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:52:34,761 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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 -> 8d0216d6bf8bf4f618f739d27f28d08a28da9c3b [2019-11-25 08:52:34,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:34,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:34,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:34,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:34,918 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:34,920 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/a.10.c [2019-11-25 08:52:34,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/data/5d762331f/fdc5456f03a6460e9cf6878a15cf601d/FLAG7ae10020c [2019-11-25 08:52:35,339 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:35,339 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/sv-benchmarks/c/termination-restricted-15/a.10.c [2019-11-25 08:52:35,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/data/5d762331f/fdc5456f03a6460e9cf6878a15cf601d/FLAG7ae10020c [2019-11-25 08:52:35,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/data/5d762331f/fdc5456f03a6460e9cf6878a15cf601d [2019-11-25 08:52:35,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:35,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:35,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:35,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:35,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:35,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:35" (1/1) ... [2019-11-25 08:52:35,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db0cffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:35, skipping insertion in model container [2019-11-25 08:52:35,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:35" (1/1) ... [2019-11-25 08:52:35,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:35,767 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:35,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:35,950 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:35,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:36,043 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:36,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36 WrapperNode [2019-11-25 08:52:36,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:36,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:36,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:36,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:36,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:36,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:36,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:36,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:36,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:36,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:36,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:36,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:36,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:36,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:36,288 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:36,288 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:52:36,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:36 BoogieIcfgContainer [2019-11-25 08:52:36,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:36,290 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:52:36,290 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:52:36,293 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:52:36,294 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:36,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:52:35" (1/3) ... [2019-11-25 08:52:36,296 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63703322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:36, skipping insertion in model container [2019-11-25 08:52:36,296 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:36,296 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36" (2/3) ... [2019-11-25 08:52:36,297 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63703322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:36, skipping insertion in model container [2019-11-25 08:52:36,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:36,297 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:36" (3/3) ... [2019-11-25 08:52:36,299 INFO L371 chiAutomizerObserver]: Analyzing ICFG a.10.c [2019-11-25 08:52:36,344 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:52:36,344 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:52:36,344 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:52:36,344 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:36,345 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:36,345 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:52:36,345 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:36,345 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:52:36,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-25 08:52:36,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:36,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:36,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:36,383 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:52:36,383 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:36,383 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:52:36,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-25 08:52:36,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:36,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:36,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:36,385 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:52:36,385 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:36,392 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 3#L12-2true [2019-11-25 08:52:36,393 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!!(main_~x~0 == main_~y~0); 5#L12true assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 3#L12-2true [2019-11-25 08:52:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:36,398 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:52:36,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:36,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785400779] [2019-11-25 08:52:36,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:36,489 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-25 08:52:36,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:36,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353685149] [2019-11-25 08:52:36,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:36,504 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:36,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:36,505 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-25 08:52:36,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:36,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135342938] [2019-11-25 08:52:36,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:36,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:36,585 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:36,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:36,586 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:36,586 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:36,586 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:36,586 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:36,587 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:36,587 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:36,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration1_Loop [2019-11-25 08:52:36,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:36,587 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:36,632 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 08:52:36,650 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 08:52:36,657 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 08:52:36,747 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:36,747 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:36,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:36,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:36,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:36,761 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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:36,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:36,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:36,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:36,774 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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:36,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:36,795 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:36,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:36,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:36,938 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:36,940 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:36,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:36,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:36,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:36,940 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:36,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:36,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:36,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:36,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration1_Loop [2019-11-25 08:52:36,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:36,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:36,942 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 08:52:36,947 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 08:52:36,951 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 08:52:37,033 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:37,038 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:37,053 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 08:52:37,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:37,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:37,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:37,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:37,065 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:37,069 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:52:37,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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) [2019-11-25 08:52:37,091 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 08:52:37,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:37,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:37,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:37,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:37,101 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:37,102 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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) [2019-11-25 08:52:37,129 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 08:52:37,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:37,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:37,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:37,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:37,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:37,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:37,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,139 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:37,152 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:52:37,152 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,163 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:37,163 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:37,163 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:37,164 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:52:37,167 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:37,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:37,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:37,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:37,212 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:37,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:37,215 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 08:52:37,230 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 08:52:37,232 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-25 08:52:37,273 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-11-25 08:52:37,274 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 08:52:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-25 08:52:37,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:52:37,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:37,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:52:37,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:37,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:52:37,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:37,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-25 08:52:37,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,287 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-25 08:52:37,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:52:37,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-25 08:52:37,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-25 08:52:37,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:37,289 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:52:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-25 08:52:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-25 08:52:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:52:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-25 08:52:37,313 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:52:37,313 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:52:37,313 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:52:37,313 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-25 08:52:37,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:37,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:37,314 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:52:37,315 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:37,315 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 69#L12-2 assume !!!(main_~x~0 == main_~y~0); 67#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 63#L12-2 [2019-11-25 08:52:37,315 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!!(main_~x~0 == main_~y~0); 64#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 63#L12-2 [2019-11-25 08:52:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-25 08:52:37,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465632978] [2019-11-25 08:52:37,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,325 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:37,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-25 08:52:37,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610438869] [2019-11-25 08:52:37,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,333 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-25 08:52:37,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612586118] [2019-11-25 08:52:37,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:37,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612586118] [2019-11-25 08:52:37,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038298911] [2019-11-25 08:52:37,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:37,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:37,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:37,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:37,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-25 08:52:37,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749478969] [2019-11-25 08:52:37,460 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:37,460 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:37,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:37,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:37,461 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:37,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:37,461 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:37,461 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration2_Loop [2019-11-25 08:52:37,461 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:37,462 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:37,463 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 08:52:37,466 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 08:52:37,477 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 08:52:37,523 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:37,523 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:37,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:37,536 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:37,541 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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:37,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:37,558 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:37,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:37,579 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,724 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:37,726 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:37,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:37,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:37,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:37,727 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:37,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:37,727 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:37,727 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration2_Loop [2019-11-25 08:52:37,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:37,727 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:37,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:37,738 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 08:52:37,744 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 08:52:37,790 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:37,791 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:37,801 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 08:52:37,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:37,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:37,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:37,805 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:37,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:37,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:37,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:37,817 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:37,823 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:37,823 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:37,828 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:37,828 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:37,828 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:37,828 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:52:37,838 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:37,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:37,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:37,936 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:37,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:37,937 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 08:52:37,937 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 08:52:37,937 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:52:37,956 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-25 08:52:37,957 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 08:52:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-25 08:52:37,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:52:37,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:37,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:52:37,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:37,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-25 08:52:37,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:37,959 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-25 08:52:37,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,960 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-25 08:52:37,961 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:52:37,961 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:52:37,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-25 08:52:37,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:37,961 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-25 08:52:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-25 08:52:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:52:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:52:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-25 08:52:37,963 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-25 08:52:37,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:52:37,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:52:37,966 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2019-11-25 08:52:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:37,987 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-11-25 08:52:37,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:52:37,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-11-25 08:52:37,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2019-11-25 08:52:37,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:52:37,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:52:37,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-11-25 08:52:37,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:37,990 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-25 08:52:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-11-25 08:52:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-25 08:52:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:52:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-25 08:52:37,991 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-25 08:52:37,991 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-25 08:52:37,991 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:52:37,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-25 08:52:37,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:37,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:37,992 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:52:37,992 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:37,993 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 158#L12-2 assume !!!(main_~x~0 == main_~y~0); 154#L12 [2019-11-25 08:52:37,993 INFO L796 eck$LassoCheckResult]: Loop: 154#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 153#L12-2 assume !!!(main_~x~0 == main_~y~0); 154#L12 [2019-11-25 08:52:37,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:52:37,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129505116] [2019-11-25 08:52:37,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:38,000 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-11-25 08:52:38,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:38,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739257595] [2019-11-25 08:52:38,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:38,013 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:38,013 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2019-11-25 08:52:38,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:38,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305875643] [2019-11-25 08:52:38,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:38,022 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:38,043 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:38,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:38,044 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:38,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:38,044 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:38,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:38,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:38,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:38,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration3_Loop [2019-11-25 08:52:38,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:38,045 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:38,046 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 08:52:38,057 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 08:52:38,061 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 08:52:38,151 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:38,151 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:38,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:38,160 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:38,176 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:38,176 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:40,565 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:40,567 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:40,567 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:40,567 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:40,567 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:40,567 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:40,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:40,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:40,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:40,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration3_Loop [2019-11-25 08:52:40,568 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:40,568 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:40,569 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 08:52:40,597 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 08:52:40,601 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 08:52:40,673 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:40,673 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:40,679 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 08:52:40,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:40,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:40,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:40,681 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:52:40,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:40,684 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:52:40,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:40,691 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:40,695 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:40,695 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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:40,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:40,717 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:40,717 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:40,717 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:40,719 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:40,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:40,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:40,749 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:40,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:40,766 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 08:52:40,766 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 08:52:40,767 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-25 08:52:40,782 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2019-11-25 08:52:40,783 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 08:52:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:52:40,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-25 08:52:40,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:40,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:52:40,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:40,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-25 08:52:40,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:40,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-25 08:52:40,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:40,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-11-25 08:52:40,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:52:40,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-25 08:52:40,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-11-25 08:52:40,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:40,787 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-25 08:52:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-11-25 08:52:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-25 08:52:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:52:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-25 08:52:40,788 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-25 08:52:40,789 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-25 08:52:40,789 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:52:40,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-25 08:52:40,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:40,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:40,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:40,790 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-11-25 08:52:40,790 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:40,790 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 203#L12-2 assume !!!(main_~x~0 == main_~y~0); 204#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 205#L12-2 assume !!!(main_~x~0 == main_~y~0); 206#L12 [2019-11-25 08:52:40,790 INFO L796 eck$LassoCheckResult]: Loop: 206#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 208#L12-2 assume !!!(main_~x~0 == main_~y~0); 206#L12 [2019-11-25 08:52:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-11-25 08:52:40,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:40,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592630260] [2019-11-25 08:52:40,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:40,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:40,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-11-25 08:52:40,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:40,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611418278] [2019-11-25 08:52:40,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:40,818 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2019-11-25 08:52:40,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:40,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37971578] [2019-11-25 08:52:40,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:40,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37971578] [2019-11-25 08:52:40,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:40,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:52:40,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609506570] [2019-11-25 08:52:40,885 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:40,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:40,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:40,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:40,885 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:40,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:40,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:40,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:40,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration4_Loop [2019-11-25 08:52:40,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:40,886 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:40,887 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 08:52:40,891 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 08:52:40,900 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 08:52:40,986 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:40,986 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:41,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:41,008 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:41,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:41,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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) [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-11-25 08:52:41,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:41,067 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:41,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:41,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:43,440 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:43,442 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:43,442 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:43,442 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:43,443 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:43,443 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:43,443 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:43,443 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:43,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:43,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.10.c_Iteration4_Loop [2019-11-25 08:52:43,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:43,443 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:43,445 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 08:52:43,452 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 08:52:43,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:43,559 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:43,559 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:43,563 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 08:52:43,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:43,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:43,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:43,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:43,568 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:43,568 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:43,572 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:43,578 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 08:52:43,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:43,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:43,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:43,580 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:52:43,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:43,582 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:52:43,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:43,586 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:43,590 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:43,590 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_c29a13aa-2d61-43a9-9236-2d5e5a94b99b/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 08:52:43,596 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:43,596 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:43,596 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:43,596 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-25 08:52:43,606 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:43,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:43,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:43,634 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:43,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:43,651 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 08:52:43,651 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 08:52:43,651 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-25 08:52:43,657 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-11-25 08:52:43,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-25 08:52:43,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:52:43,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:43,658 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:52:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:43,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:43,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:43,681 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:43,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:43,695 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 08:52:43,695 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:52:43,696 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-25 08:52:43,700 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-11-25 08:52:43,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-25 08:52:43,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:52:43,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:43,701 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:52:43,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:43,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:43,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:43,723 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:43,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:43,737 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 08:52:43,737 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 2 loop predicates [2019-11-25 08:52:43,737 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-25 08:52:43,753 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2019-11-25 08:52:43,753 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 08:52:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-25 08:52:43,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:52:43,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:43,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-25 08:52:43,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:43,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-25 08:52:43,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:43,755 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-11-25 08:52:43,756 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:43,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-11-25 08:52:43,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:52:43,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:52:43,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:52:43,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:43,756 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:43,756 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:43,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:43,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:52:43,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:52:43,757 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-11-25 08:52:43,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:43,757 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-25 08:52:43,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:52:43,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-25 08:52:43,758 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:43,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:52:43,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:52:43,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:52:43,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:52:43,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:43,758 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:43,758 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:43,758 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:43,759 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:52:43,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:52:43,759 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:43,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:52:43,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:52:43 BoogieIcfgContainer [2019-11-25 08:52:43,765 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:52:43,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:43,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:43,765 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:43,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:36" (3/4) ... [2019-11-25 08:52:43,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:52:43,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:43,771 INFO L168 Benchmark]: Toolchain (without parser) took 8039.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -120.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:43,771 INFO L168 Benchmark]: CDTParser took 0.31 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 08:52:43,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:43,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.54 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:43,773 INFO L168 Benchmark]: Boogie Preprocessor took 19.87 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 08:52:43,773 INFO L168 Benchmark]: RCFGBuilder took 188.68 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:43,774 INFO L168 Benchmark]: BuchiAutomizer took 7474.74 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: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:43,774 INFO L168 Benchmark]: Witness Printer took 3.85 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 08:52:43,790 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 312.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.54 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.87 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 188.68 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7474.74 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: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One deterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...