./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 1a5ad591ce856c2d846b6a372eee9518c32c9e01 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:37:29,748 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:37:29,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:37:29,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:37:29,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:37:29,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:37:29,756 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:37:29,757 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:37:29,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:37:29,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:37:29,759 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:37:29,759 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:37:29,760 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:37:29,760 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:37:29,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:37:29,761 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:37:29,762 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:37:29,763 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:37:29,764 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:37:29,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:37:29,765 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:37:29,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:37:29,767 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:37:29,767 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:37:29,767 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:37:29,768 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:37:29,768 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:37:29,769 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:37:29,769 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:37:29,770 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:37:29,770 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:37:29,771 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:37:29,771 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:37:29,771 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:37:29,771 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:37:29,772 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:37:29,772 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 10:37:29,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:37:29,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:37:29,780 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 10:37:29,781 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 10:37:29,781 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:37:29,781 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 10:37:29,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:37:29,782 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 10:37:29,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:37:29,783 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 10:37:29,783 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 10:37:29,783 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 10:37:29,783 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 -> 1a5ad591ce856c2d846b6a372eee9518c32c9e01 [2018-12-09 10:37:29,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:37:29,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:37:29,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:37:29,813 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:37:29,813 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:37:29,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c [2018-12-09 10:37:29,855 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/data/de3a5ca25/db5b186ee1b04d19bbb02e63d25edc20/FLAG0e4004561 [2018-12-09 10:37:30,316 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:37:30,317 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c [2018-12-09 10:37:30,320 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/data/de3a5ca25/db5b186ee1b04d19bbb02e63d25edc20/FLAG0e4004561 [2018-12-09 10:37:30,328 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/data/de3a5ca25/db5b186ee1b04d19bbb02e63d25edc20 [2018-12-09 10:37:30,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:37:30,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:37:30,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:37:30,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:37:30,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:37:30,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ef9c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30, skipping insertion in model container [2018-12-09 10:37:30,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:37:30,347 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:37:30,428 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:37:30,430 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:37:30,438 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:37:30,446 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:37:30,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30 WrapperNode [2018-12-09 10:37:30,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:37:30,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:37:30,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:37:30,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:37:30,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:37:30,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:37:30,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:37:30,465 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:37:30,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... [2018-12-09 10:37:30,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:37:30,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:37:30,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:37:30,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:37:30,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:37:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:37:30,602 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:37:30,603 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 10:37:30,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:37:30 BoogieIcfgContainer [2018-12-09 10:37:30,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:37:30,603 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 10:37:30,603 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 10:37:30,606 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 10:37:30,606 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 10:37:30,606 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 10:37:30" (1/3) ... [2018-12-09 10:37:30,607 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51864981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 10:37:30, skipping insertion in model container [2018-12-09 10:37:30,607 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 10:37:30,607 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:37:30" (2/3) ... [2018-12-09 10:37:30,607 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51864981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 10:37:30, skipping insertion in model container [2018-12-09 10:37:30,607 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 10:37:30,607 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:37:30" (3/3) ... [2018-12-09 10:37:30,608 INFO L375 chiAutomizerObserver]: Analyzing ICFG PastaA1_true-termination_true-no-overflow.c [2018-12-09 10:37:30,652 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 10:37:30,652 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 10:37:30,652 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 10:37:30,652 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 10:37:30,653 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:37:30,653 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:37:30,653 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 10:37:30,653 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:37:30,653 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 10:37:30,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 10:37:30,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 10:37:30,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:37:30,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:37:30,679 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-09 10:37:30,679 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:37:30,679 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 10:37:30,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-09 10:37:30,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 10:37:30,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:37:30,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:37:30,680 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-09 10:37:30,680 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:37:30,685 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2018-12-09 10:37:30,685 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~x~0 > 0);main_~y~0 := 0; 3#L12-2true assume !(main_~y~0 < main_~x~0); 10#L12-3true main_~x~0 := main_~x~0 - 1; 8#L10-2true [2018-12-09 10:37:30,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-09 10:37:30,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:30,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:30,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:30,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-12-09 10:37:30,758 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:30,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:30,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:30,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:30,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:37:30,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 10:37:30,794 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-09 10:37:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 10:37:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 10:37:30,805 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-12-09 10:37:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:37:30,819 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-09 10:37:30,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 10:37:30,820 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-12-09 10:37:30,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 10:37:30,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2018-12-09 10:37:30,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 10:37:30,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-09 10:37:30,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2018-12-09 10:37:30,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 10:37:30,824 INFO L705 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-12-09 10:37:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2018-12-09 10:37:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-12-09 10:37:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-09 10:37:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2018-12-09 10:37:30,840 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-12-09 10:37:30,840 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-12-09 10:37:30,840 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 10:37:30,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2018-12-09 10:37:30,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-09 10:37:30,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:37:30,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:37:30,841 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-09 10:37:30,841 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-09 10:37:30,842 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 29#L10-2 [2018-12-09 10:37:30,842 INFO L796 eck$LassoCheckResult]: Loop: 29#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 26#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 27#L12-2 assume !(main_~y~0 < main_~x~0); 30#L12-3 main_~x~0 := main_~x~0 - 1; 29#L10-2 [2018-12-09 10:37:30,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:30,842 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-12-09 10:37:30,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:30,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:30,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:30,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:30,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2018-12-09 10:37:30,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:30,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:30,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:37:30,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:30,856 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2018-12-09 10:37:30,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:30,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:30,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:30,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:30,913 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:37:30,914 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:37:30,914 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:37:30,914 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:37:30,914 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:37:30,914 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:30,914 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:37:30,914 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:37:30,914 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 10:37:30,915 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:37:30,915 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:37:30,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:30,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:30,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:30,988 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:37:30,989 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:30,992 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:30,992 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,010 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:37:31,010 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,013 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,013 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,028 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:37:31,028 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,030 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,031 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,048 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:37:31,049 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,077 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:37:31,078 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:37:31,078 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:37:31,078 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:37:31,079 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:37:31,079 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:37:31,079 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:31,079 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:37:31,079 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:37:31,079 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 10:37:31,079 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:37:31,079 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:37:31,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,127 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:37:31,130 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:37:31,131 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 [2018-12-09 10:37:31,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,132 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,132 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,132 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,134 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:37:31,134 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:37:31,137 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:37:31,138 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 [2018-12-09 10:37:31,138 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,138 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,138 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,138 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,140 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:37:31,140 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:37:31,144 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:37:31,145 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 [2018-12-09 10:37:31,145 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,145 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:37:31,145 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,145 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,146 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,146 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:37:31,146 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:37:31,150 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:37:31,152 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 10:37:31,152 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:37:31,153 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:37:31,154 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:37:31,154 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:37:31,154 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-09 10:37:31,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:37:31,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 10:37:31,202 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 [2018-12-09 10:37:31,203 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-12-09 10:37:31,224 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 9 states and 12 transitions. Complement of second has 4 states. [2018-12-09 10:37:31,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:37:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 10:37:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-09 10:37:31,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-09 10:37:31,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-09 10:37:31,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2018-12-09 10:37:31,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2018-12-09 10:37:31,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-09 10:37:31,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2018-12-09 10:37:31,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-12-09 10:37:31,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-09 10:37:31,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-09 10:37:31,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:37:31,228 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-09 10:37:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-09 10:37:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-12-09 10:37:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-09 10:37:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-09 10:37:31,229 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-09 10:37:31,229 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-09 10:37:31,229 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 10:37:31,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-09 10:37:31,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-09 10:37:31,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:37:31,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:37:31,230 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 10:37:31,230 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-09 10:37:31,230 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 79#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 75#L12-2 [2018-12-09 10:37:31,230 INFO L796 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 75#L12-2 [2018-12-09 10:37:31,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-09 10:37:31,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:31,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:31,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:31,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-12-09 10:37:31,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:31,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:31,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:31,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,240 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-12-09 10:37:31,240 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:31,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:31,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:31,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,252 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:37:31,253 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:37:31,253 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:37:31,253 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:37:31,253 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:37:31,253 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:31,253 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:37:31,253 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:37:31,253 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 10:37:31,253 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:37:31,253 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:37:31,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,280 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:37:31,281 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,282 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,282 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,296 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:37:31,296 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,299 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,299 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,313 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:37:31,313 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:31,315 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,316 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,332 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:37:31,332 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,442 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:37:31,443 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:37:31,443 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:37:31,443 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:37:31,443 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:37:31,444 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:37:31,444 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:31,444 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:37:31,444 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:37:31,444 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 10:37:31,444 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:37:31,444 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:37:31,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,474 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:37:31,474 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:37:31,475 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 [2018-12-09 10:37:31,476 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,476 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,476 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,476 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,478 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:37:31,478 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:37:31,481 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:37:31,481 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 [2018-12-09 10:37:31,482 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,482 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,482 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,482 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,484 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:37:31,484 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:37:31,488 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:37:31,488 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 [2018-12-09 10:37:31,489 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,489 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:37:31,489 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,489 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,489 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,490 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:37:31,490 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:37:31,493 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:37:31,496 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 10:37:31,496 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:37:31,496 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:37:31,496 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:37:31,496 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:37:31,497 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-09 10:37:31,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:37:31,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:31,519 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:37:31,520 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-12-09 10:37:31,530 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2018-12-09 10:37:31,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:37:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:37:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-09 10:37:31,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-12-09 10:37:31,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-12-09 10:37:31,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-09 10:37:31,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2018-12-09 10:37:31,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-09 10:37:31,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2018-12-09 10:37:31,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-12-09 10:37:31,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-12-09 10:37:31,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2018-12-09 10:37:31,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:37:31,533 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-12-09 10:37:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2018-12-09 10:37:31,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2018-12-09 10:37:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-09 10:37:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-12-09 10:37:31,534 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-09 10:37:31,535 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-09 10:37:31,535 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 10:37:31,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-12-09 10:37:31,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-12-09 10:37:31,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:37:31,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:37:31,536 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-12-09 10:37:31,536 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-09 10:37:31,536 INFO L794 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 130#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 127#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 128#L12-2 assume !(main_~y~0 < main_~x~0); 132#L12-3 main_~x~0 := main_~x~0 - 1; 131#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 126#L12-2 [2018-12-09 10:37:31,536 INFO L796 eck$LassoCheckResult]: Loop: 126#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 126#L12-2 [2018-12-09 10:37:31,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,536 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2018-12-09 10:37:31,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:31,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:31,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:37:31,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:31,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 10:37:31,557 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 10:37:31,565 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 10:37:31,570 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 10:37:31,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 10:37:31,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:31,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 10:37:31,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-09 10:37:31,599 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 10:37:31,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-12-09 10:37:31,600 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:37:31,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:37:31,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:37:31,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:37:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:37:31,609 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:37:31,609 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:37:31,609 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:37:31,609 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:37:31,609 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:37:31,609 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:31,609 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:37:31,609 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:37:31,609 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 10:37:31,610 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:37:31,610 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:37:31,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,639 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:37:31,640 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,641 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,641 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,664 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:37:31,664 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,667 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,667 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,683 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:37:31,683 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_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,685 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:37:31,685 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_93465fc2-c548-4faf-a3e7-ef07bc6083e6/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 [2018-12-09 10:37:31,702 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:37:31,702 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:37:31,793 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:37:31,794 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:37:31,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:37:31,794 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:37:31,794 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:37:31,794 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:37:31,794 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:37:31,794 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:37:31,794 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:37:31,794 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 10:37:31,794 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:37:31,794 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:37:31,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:37:31,822 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:37:31,822 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:37:31,822 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 [2018-12-09 10:37:31,823 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,823 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,823 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,823 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,824 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:37:31,824 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:37:31,826 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:37:31,826 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 [2018-12-09 10:37:31,827 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,827 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,827 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,827 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,828 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:37:31,828 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:37:31,829 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:37:31,830 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 [2018-12-09 10:37:31,830 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:37:31,830 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:37:31,830 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:37:31,830 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:37:31,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:37:31,831 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:37:31,831 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:37:31,833 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:37:31,835 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:37:31,835 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:37:31,835 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:37:31,835 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:37:31,835 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:37:31,836 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-09 10:37:31,836 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:37:31,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:31,861 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:37:31,861 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-12-09 10:37:31,868 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-12-09 10:37:31,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:37:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:37:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-09 10:37:31,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-12-09 10:37:31,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,870 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:37:31,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:31,884 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:37:31,884 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-12-09 10:37:31,890 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-12-09 10:37:31,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:37:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:37:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-09 10:37:31,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-12-09 10:37:31,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,891 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:37:31,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:37:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:37:31,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:37:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:37:31,905 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:37:31,905 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-12-09 10:37:31,913 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2018-12-09 10:37:31,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:37:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:37:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-09 10:37:31,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-12-09 10:37:31,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-12-09 10:37:31,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-09 10:37:31,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:37:31,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-12-09 10:37:31,915 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 10:37:31,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-12-09 10:37:31,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 10:37:31,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 10:37:31,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 10:37:31,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 10:37:31,916 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:37:31,916 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:37:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 10:37:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 10:37:31,916 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-12-09 10:37:31,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:37:31,916 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 10:37:31,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 10:37:31,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 10:37:31,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 10:37:31,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 10:37:31,917 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 10:37:31,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 10:37:31,917 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 10:37:31,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 10:37:31,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 10:37:31 BoogieIcfgContainer [2018-12-09 10:37:31,921 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 10:37:31,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:37:31,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:37:31,922 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:37:31,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:37:30" (3/4) ... [2018-12-09 10:37:31,924 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 10:37:31,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:37:31,925 INFO L168 Benchmark]: Toolchain (without parser) took 1594.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 961.3 MB in the beginning and 890.7 MB in the end (delta: 70.7 MB). Peak memory consumption was 203.9 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:31,926 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:37:31,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.47 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:31,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.64 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:37:31,926 INFO L168 Benchmark]: Boogie Preprocessor took 10.67 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:37:31,927 INFO L168 Benchmark]: RCFGBuilder took 127.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:31,927 INFO L168 Benchmark]: BuchiAutomizer took 1318.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.5 MB in the end (delta: 216.0 MB). Peak memory consumption was 216.0 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:31,927 INFO L168 Benchmark]: Witness Printer took 2.67 ms. Allocated memory is still 1.2 GB. Free memory was 897.5 MB in the beginning and 890.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 10:37:31,929 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.47 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.6 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 17.64 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.67 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 127.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -169.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1318.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.5 MB in the end (delta: 216.0 MB). Peak memory consumption was 216.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.67 ms. Allocated memory is still 1.2 GB. Free memory was 897.5 MB in the beginning and 890.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function x + -1 * y and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 20 SDtfs, 14 SDslu, 3 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp95 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...