./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0455ba49274114922cfe1b7739d9cb0a89e6c868 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:01:22,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:01:22,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:01:22,933 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:01:22,934 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:01:22,934 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:01:22,935 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:01:22,936 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:01:22,937 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:01:22,938 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:01:22,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:01:22,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:01:22,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:01:22,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:01:22,941 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:01:22,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:01:22,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:01:22,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:01:22,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:01:22,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:01:22,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:01:22,948 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:01:22,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:01:22,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:01:22,950 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:01:22,951 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:01:22,952 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:01:22,953 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:01:22,953 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:01:22,954 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:01:22,955 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:01:22,955 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:01:22,955 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:01:22,955 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:01:22,956 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:01:22,956 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:01:22,957 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 17:01:22,967 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:01:22,967 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:01:22,968 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:01:22,969 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:01:22,969 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:01:22,969 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 17:01:22,969 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 17:01:22,969 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 17:01:22,969 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 17:01:22,969 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 17:01:22,970 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 17:01:22,970 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 17:01:22,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 17:01:22,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 17:01:22,971 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 17:01:22,972 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 17:01:22,972 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2018-11-18 17:01:23,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:01:23,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:01:23,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:01:23,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:01:23,016 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:01:23,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-18 17:01:23,061 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/data/7d0ac97cf/828aee3844b24c88bf87c364aa5159d9/FLAG820d55025 [2018-11-18 17:01:23,424 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:01:23,424 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-18 17:01:23,429 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/data/7d0ac97cf/828aee3844b24c88bf87c364aa5159d9/FLAG820d55025 [2018-11-18 17:01:23,831 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/data/7d0ac97cf/828aee3844b24c88bf87c364aa5159d9 [2018-11-18 17:01:23,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:01:23,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:01:23,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:01:23,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:01:23,839 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:01:23,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:23,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19befe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23, skipping insertion in model container [2018-11-18 17:01:23,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:23,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:01:23,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:01:23,971 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:01:23,973 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:01:23,983 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:01:23,992 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:01:23,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23 WrapperNode [2018-11-18 17:01:23,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:01:23,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:01:23,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:01:23,993 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:01:23,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:01:24,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:01:24,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:01:24,013 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:01:24,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... [2018-11-18 17:01:24,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:01:24,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:01:24,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:01:24,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:01:24,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:01:24,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:01:24,228 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:01:24,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:01:24 BoogieIcfgContainer [2018-11-18 17:01:24,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:01:24,229 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 17:01:24,229 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 17:01:24,232 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 17:01:24,232 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 17:01:24,232 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 05:01:23" (1/3) ... [2018-11-18 17:01:24,233 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2258017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 05:01:24, skipping insertion in model container [2018-11-18 17:01:24,233 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 17:01:24,233 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:01:23" (2/3) ... [2018-11-18 17:01:24,233 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2258017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 05:01:24, skipping insertion in model container [2018-11-18 17:01:24,234 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 17:01:24,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:01:24" (3/3) ... [2018-11-18 17:01:24,237 INFO L375 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-18 17:01:24,280 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:01:24,281 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 17:01:24,281 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 17:01:24,281 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 17:01:24,281 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:01:24,281 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:01:24,281 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 17:01:24,281 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:01:24,281 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 17:01:24,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-18 17:01:24,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:24,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:01:24,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:01:24,310 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 17:01:24,310 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:01:24,310 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 17:01:24,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-18 17:01:24,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:24,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:01:24,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:01:24,312 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 17:01:24,312 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:01:24,317 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 4#L18-3true [2018-11-18 17:01:24,317 INFO L796 eck$LassoCheckResult]: Loop: 4#L18-3true assume true; 7#L18-1true assume !!(main_~y~0 >= 0); 10#L19true assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 8#L19-2true main_~x~0 := 1 + main_~x~0; 4#L18-3true [2018-11-18 17:01:24,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:24,322 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 17:01:24,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:24,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:24,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:24,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:24,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:24,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1114345, now seen corresponding path program 1 times [2018-11-18 17:01:24,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:24,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:24,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:24,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:24,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:24,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:24,396 INFO L82 PathProgramCache]: Analyzing trace with hash 889541547, now seen corresponding path program 1 times [2018-11-18 17:01:24,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:24,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:24,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:24,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:01:24,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:01:24,520 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:24,521 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:24,521 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:24,521 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:24,521 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:01:24,521 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,521 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:24,521 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:24,521 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2018-11-18 17:01:24,522 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:24,522 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:24,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,738 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:24,739 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,743 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:24,743 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:24,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:24,779 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:24,780 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=51} Honda state: {ULTIMATE.start_main_~x~0=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,805 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:24,806 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:24,822 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:24,823 INFO L448 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/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,826 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:24,826 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:24,842 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:24,842 INFO L448 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/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,846 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:24,847 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,867 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:24,867 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:24,889 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:01:24,890 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:24,890 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:24,890 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:24,890 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:24,891 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:01:24,891 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:24,891 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:24,891 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:24,891 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2018-11-18 17:01:24,891 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:24,891 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:24,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:24,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:25,103 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:25,106 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:01:25,107 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:25,108 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:25,109 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:25,109 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:25,109 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:25,109 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:25,111 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:25,111 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:25,118 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:25,119 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:25,120 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:25,120 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:25,120 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:25,120 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:25,122 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:25,122 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:25,125 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:25,125 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:25,127 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:25,127 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:25,127 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:25,127 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:25,129 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:25,129 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:25,137 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:25,138 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:25,138 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:25,138 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:25,139 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:25,139 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:25,139 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:25,139 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:25,140 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:25,144 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:01:25,148 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 17:01:25,148 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 17:01:25,150 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:01:25,150 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:01:25,150 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:01:25,150 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-18 17:01:25,151 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:01:25,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:25,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:25,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:25,331 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 17:01:25,332 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 5 states. [2018-11-18 17:01:25,385 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 5 states. Result 31 states and 37 transitions. Complement of second has 8 states. [2018-11-18 17:01:25,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:01:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 17:01:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2018-11-18 17:01:25,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-18 17:01:25,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:25,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-18 17:01:25,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:25,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-18 17:01:25,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:25,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2018-11-18 17:01:25,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:25,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 15 states and 18 transitions. [2018-11-18 17:01:25,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-18 17:01:25,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 17:01:25,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2018-11-18 17:01:25,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 17:01:25,400 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 17:01:25,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2018-11-18 17:01:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-11-18 17:01:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 17:01:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-11-18 17:01:25,418 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-18 17:01:25,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:01:25,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:01:25,420 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2018-11-18 17:01:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:01:25,439 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-11-18 17:01:25,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:01:25,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2018-11-18 17:01:25,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:25,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 11 transitions. [2018-11-18 17:01:25,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 17:01:25,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 17:01:25,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2018-11-18 17:01:25,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 17:01:25,442 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-11-18 17:01:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2018-11-18 17:01:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-18 17:01:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 17:01:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 17:01:25,443 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 17:01:25,443 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 17:01:25,443 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 17:01:25,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-18 17:01:25,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:25,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:01:25,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:01:25,444 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 17:01:25,444 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:01:25,444 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 115#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 116#L18-3 assume true; 117#L18-1 assume !!(main_~y~0 >= 0); 119#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 120#L19-2 [2018-11-18 17:01:25,444 INFO L796 eck$LassoCheckResult]: Loop: 120#L19-2 main_~x~0 := 1 + main_~x~0; 121#L18-3 assume true; 123#L18-1 assume !!(main_~y~0 >= 0); 122#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 120#L19-2 [2018-11-18 17:01:25,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:25,445 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-18 17:01:25,445 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:25,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:25,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:25,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:25,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1495705, now seen corresponding path program 2 times [2018-11-18 17:01:25,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:25,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:25,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:25,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:25,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:25,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:25,460 INFO L82 PathProgramCache]: Analyzing trace with hash 382169470, now seen corresponding path program 1 times [2018-11-18 17:01:25,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:25,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:25,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:25,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:01:25,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:25,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:01:25,504 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:01:25,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:25,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:25,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:01:25,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-18 17:01:25,551 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:25,551 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:25,551 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:25,552 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:25,552 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:01:25,552 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:25,552 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:25,552 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:25,552 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2018-11-18 17:01:25,552 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:25,552 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:25,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:25,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:25,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:25,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:25,959 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-11-18 17:01:26,038 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:26,038 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,051 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,080 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:26,080 INFO L448 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/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,088 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,116 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:26,116 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,125 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,158 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:26,158 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,183 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:26,183 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=50} Honda state: {ULTIMATE.start_main_~x~0=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 3] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,211 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,212 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,239 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:26,239 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,263 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:01:26,264 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:26,264 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:26,264 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:26,264 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:26,265 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:01:26,265 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,265 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:26,265 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:26,265 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2018-11-18 17:01:26,265 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:26,265 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:26,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,406 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:26,406 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:01:26,406 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,407 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,407 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,407 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,407 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,409 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:26,409 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:26,413 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:26,413 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,414 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,414 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,414 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,414 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,416 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:26,417 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:26,421 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:26,421 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,422 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,422 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:26,423 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,424 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,424 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,424 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:26,424 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:26,428 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:26,428 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,429 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,429 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:26,429 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,429 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,429 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,429 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:26,430 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:26,432 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:01:26,435 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 17:01:26,435 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 17:01:26,435 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:01:26,435 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:01:26,435 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:01:26,436 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-18 17:01:26,436 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:01:26,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:26,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:26,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:26,563 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 [2018-11-18 17:01:26,563 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 17:01:26,578 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 17 states and 20 transitions. Complement of second has 7 states. [2018-11-18 17:01:26,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:01:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 17:01:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-18 17:01:26,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-18 17:01:26,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:26,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 17:01:26,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:26,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-18 17:01:26,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:26,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 20 transitions. [2018-11-18 17:01:26,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:26,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 20 transitions. [2018-11-18 17:01:26,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-18 17:01:26,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 17:01:26,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2018-11-18 17:01:26,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 17:01:26,582 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 17:01:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2018-11-18 17:01:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 17:01:26,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 17:01:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-18 17:01:26,584 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 17:01:26,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:01:26,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:01:26,585 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2018-11-18 17:01:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:01:26,599 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-18 17:01:26,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:01:26,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2018-11-18 17:01:26,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:26,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 15 transitions. [2018-11-18 17:01:26,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-18 17:01:26,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-18 17:01:26,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2018-11-18 17:01:26,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 17:01:26,601 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-18 17:01:26,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2018-11-18 17:01:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-18 17:01:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 17:01:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-18 17:01:26,603 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 17:01:26,603 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 17:01:26,603 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 17:01:26,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2018-11-18 17:01:26,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 17:01:26,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:01:26,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:01:26,604 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2018-11-18 17:01:26,604 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:01:26,604 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 253#L18-3 assume true; 264#L18-1 assume !!(main_~y~0 >= 0); 263#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 258#L19-2 main_~x~0 := 1 + main_~x~0; 254#L18-3 assume true; 255#L18-1 assume !!(main_~y~0 >= 0); 257#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 259#L19-2 [2018-11-18 17:01:26,604 INFO L796 eck$LassoCheckResult]: Loop: 259#L19-2 main_~x~0 := 1 + main_~x~0; 262#L18-3 assume true; 261#L18-1 assume !!(main_~y~0 >= 0); 260#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 259#L19-2 [2018-11-18 17:01:26,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:26,605 INFO L82 PathProgramCache]: Analyzing trace with hash 382169468, now seen corresponding path program 1 times [2018-11-18 17:01:26,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:26,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:26,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:26,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:26,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:26,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:26,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1495705, now seen corresponding path program 3 times [2018-11-18 17:01:26,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:26,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:26,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:26,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:26,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:26,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1702687084, now seen corresponding path program 2 times [2018-11-18 17:01:26,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:26,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:26,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:26,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:01:26,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:26,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:01:26,646 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:01:26,653 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:01:26,659 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:01:26,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:01:26,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:26,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:26,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:01:26,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 17:01:26,706 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:26,706 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:26,706 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:26,706 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:26,706 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:01:26,706 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,706 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:26,706 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:26,707 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2018-11-18 17:01:26,707 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:26,707 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:26,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,784 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:26,784 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,787 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,787 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,806 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:26,806 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,810 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,810 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,828 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:26,828 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,831 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:26,831 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,850 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:26,850 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:26,874 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:01:26,876 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:26,876 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:26,876 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:26,876 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:26,876 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:01:26,877 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:26,877 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:26,877 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:26,877 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2018-11-18 17:01:26,877 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:26,877 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:26,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:26,967 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:26,967 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:01:26,968 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,968 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,968 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,969 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,969 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,970 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:26,970 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:26,981 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:26,981 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,981 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,982 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,982 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,982 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,983 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:26,983 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:26,985 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:26,985 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:26,986 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:26,986 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:26,986 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:26,986 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:26,986 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:26,987 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:26,987 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:26,989 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:01:26,991 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 17:01:26,991 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 17:01:26,992 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:01:26,992 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:01:26,992 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:01:26,992 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-18 17:01:26,992 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:01:27,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:27,062 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 [2018-11-18 17:01:27,062 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 17:01:27,076 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 16 states and 17 transitions. Complement of second has 7 states. [2018-11-18 17:01:27,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:01:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 17:01:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 17:01:27,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 17:01:27,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,077 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 17:01:27,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:27,105 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 [2018-11-18 17:01:27,105 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 17:01:27,112 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 16 states and 17 transitions. Complement of second has 7 states. [2018-11-18 17:01:27,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:01:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 17:01:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 17:01:27,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 17:01:27,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,113 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 17:01:27,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:27,175 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 [2018-11-18 17:01:27,175 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 17:01:27,189 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 20 states and 22 transitions. Complement of second has 6 states. [2018-11-18 17:01:27,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:01:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 17:01:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 17:01:27,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 17:01:27,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-18 17:01:27,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-18 17:01:27,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2018-11-18 17:01:27,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 17:01:27,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 19 transitions. [2018-11-18 17:01:27,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 17:01:27,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 17:01:27,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2018-11-18 17:01:27,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 17:01:27,193 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-18 17:01:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2018-11-18 17:01:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-11-18 17:01:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 17:01:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-18 17:01:27,195 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-18 17:01:27,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:01:27,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:01:27,196 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2018-11-18 17:01:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:01:27,219 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-11-18 17:01:27,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:01:27,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2018-11-18 17:01:27,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 17:01:27,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 25 transitions. [2018-11-18 17:01:27,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-18 17:01:27,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-18 17:01:27,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2018-11-18 17:01:27,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 17:01:27,222 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 17:01:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2018-11-18 17:01:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-18 17:01:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 17:01:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-18 17:01:27,224 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 17:01:27,224 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 17:01:27,224 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 17:01:27,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2018-11-18 17:01:27,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 17:01:27,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 17:01:27,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 17:01:27,225 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2018-11-18 17:01:27,225 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 17:01:27,225 INFO L794 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 557#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 558#L18-3 assume true; 567#L18-1 assume !!(main_~y~0 >= 0); 565#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 566#L19-2 main_~x~0 := 1 + main_~x~0; 568#L18-3 assume true; 570#L18-1 assume !!(main_~y~0 >= 0); 569#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 560#L19-2 main_~x~0 := 1 + main_~x~0; 553#L18-3 [2018-11-18 17:01:27,225 INFO L796 eck$LassoCheckResult]: Loop: 553#L18-3 assume true; 554#L18-1 assume !!(main_~y~0 >= 0); 562#L19 assume main_~x~0 <= 50;main_~y~0 := 1 + main_~y~0; 564#L19-2 main_~x~0 := 1 + main_~x~0; 553#L18-3 [2018-11-18 17:01:27,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1037648361, now seen corresponding path program 2 times [2018-11-18 17:01:27,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:27,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:27,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:27,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:01:27,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:27,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1114283, now seen corresponding path program 1 times [2018-11-18 17:01:27,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:27,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:27,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:27,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:01:27,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:27,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1243692095, now seen corresponding path program 3 times [2018-11-18 17:01:27,238 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:01:27,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:01:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:01:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:01:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:01:27,266 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:27,266 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:27,266 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:27,266 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:27,266 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 17:01:27,266 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,266 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:27,266 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:27,267 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration4_Loop [2018-11-18 17:01:27,267 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:27,267 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:27,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,388 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:27,388 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,391 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:27,391 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:27,410 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:27,417 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:27,417 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=1}] Lambdas: [0, 0, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,434 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:27,434 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:27,450 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 17:01:27,450 INFO L448 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/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,453 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 17:01:27,453 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fcdde1c-2fd5-438d-b2bb-f6b67eb71bb4/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,474 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 17:01:27,474 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 17:01:27,491 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 17:01:27,492 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 17:01:27,492 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 17:01:27,492 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 17:01:27,492 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 17:01:27,493 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 17:01:27,493 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 17:01:27,493 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 17:01:27,493 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 17:01:27,493 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration4_Loop [2018-11-18 17:01:27,493 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 17:01:27,493 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 17:01:27,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 17:01:27,577 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 17:01:27,577 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 17:01:27,577 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:27,578 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:27,578 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:27,578 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:27,578 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:27,578 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:27,578 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:27,578 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:27,580 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:27,580 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:27,581 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:27,581 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:27,581 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:27,581 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:27,582 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 17:01:27,582 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 17:01:27,590 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 17:01:27,590 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 17:01:27,591 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 17:01:27,591 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 17:01:27,591 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 17:01:27,591 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 17:01:27,591 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 17:01:27,591 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 17:01:27,591 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 17:01:27,593 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 17:01:27,595 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 17:01:27,595 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 17:01:27,596 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 17:01:27,596 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 17:01:27,596 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 17:01:27,596 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 101 Supporting invariants [] [2018-11-18 17:01:27,596 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 17:01:27,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:01:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:01:27,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:01:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:01:27,625 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 [2018-11-18 17:01:27,625 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 20 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 17:01:27,647 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 20 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 33 states and 37 transitions. Complement of second has 6 states. [2018-11-18 17:01:27,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 17:01:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 17:01:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 17:01:27,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-18 17:01:27,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 17:01:27,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 17:01:27,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 17:01:27,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 37 transitions. [2018-11-18 17:01:27,650 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 17:01:27,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2018-11-18 17:01:27,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 17:01:27,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 17:01:27,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 17:01:27,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 17:01:27,650 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:01:27,650 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:01:27,651 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:01:27,651 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 17:01:27,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:01:27,651 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 17:01:27,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 17:01:27,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 05:01:27 BoogieIcfgContainer [2018-11-18 17:01:27,656 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 17:01:27,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:01:27,657 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:01:27,657 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:01:27,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:01:24" (3/4) ... [2018-11-18 17:01:27,660 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:01:27,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:01:27,661 INFO L168 Benchmark]: Toolchain (without parser) took 3827.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 963.4 MB in the beginning and 1.1 GB in the end (delta: -122.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:01:27,662 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:01:27,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.10 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:01:27,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.17 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:01:27,663 INFO L168 Benchmark]: Boogie Preprocessor took 10.60 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:01:27,663 INFO L168 Benchmark]: RCFGBuilder took 204.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:01:27,663 INFO L168 Benchmark]: BuchiAutomizer took 3427.60 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:01:27,664 INFO L168 Benchmark]: Witness Printer took 3.67 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. [2018-11-18 17:01:27,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.10 ms. Allocated memory is still 1.0 GB. Free memory was 963.4 MB in the beginning and 952.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.17 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.60 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 204.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3427.60 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.67 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 101 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 60 SDtfs, 50 SDslu, 46 SDs, 0 SdLazy, 65 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...