./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f560e32afd5a40adf4a98abbf810cb377947c4f4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 21:16:45,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 21:16:45,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 21:16:45,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 21:16:45,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 21:16:45,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 21:16:45,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 21:16:45,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 21:16:45,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 21:16:45,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 21:16:45,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 21:16:45,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 21:16:45,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 21:16:45,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 21:16:45,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 21:16:45,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 21:16:45,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 21:16:45,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 21:16:45,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 21:16:45,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 21:16:45,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 21:16:45,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 21:16:45,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 21:16:45,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 21:16:45,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 21:16:45,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 21:16:45,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 21:16:45,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 21:16:45,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 21:16:45,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 21:16:45,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 21:16:45,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 21:16:45,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 21:16:45,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 21:16:45,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 21:16:45,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 21:16:45,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 21:16:45,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 21:16:45,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 21:16:45,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 21:16:45,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 21:16:45,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 21:16:45,832 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 21:16:45,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 21:16:45,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 21:16:45,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 21:16:45,839 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 21:16:45,840 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 21:16:45,840 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 21:16:45,840 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 21:16:45,840 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 21:16:45,840 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 21:16:45,841 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 21:16:45,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 21:16:45,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 21:16:45,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 21:16:45,842 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 21:16:45,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 21:16:45,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 21:16:45,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 21:16:45,843 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 21:16:45,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 21:16:45,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 21:16:45,844 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 21:16:45,845 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 21:16:45,845 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f560e32afd5a40adf4a98abbf810cb377947c4f4 [2019-11-15 21:16:45,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 21:16:45,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 21:16:45,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 21:16:45,889 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 21:16:45,890 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 21:16:45,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-11-15 21:16:45,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/data/234147d6f/51825885868a471cad8a4ffd15152e83/FLAG425008371 [2019-11-15 21:16:46,341 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 21:16:46,342 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-11-15 21:16:46,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/data/234147d6f/51825885868a471cad8a4ffd15152e83/FLAG425008371 [2019-11-15 21:16:46,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/data/234147d6f/51825885868a471cad8a4ffd15152e83 [2019-11-15 21:16:46,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 21:16:46,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 21:16:46,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 21:16:46,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 21:16:46,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 21:16:46,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:16:46" (1/1) ... [2019-11-15 21:16:46,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee2491e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:46, skipping insertion in model container [2019-11-15 21:16:46,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 09:16:46" (1/1) ... [2019-11-15 21:16:46,744 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 21:16:46,759 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 21:16:46,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:16:46,919 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 21:16:46,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 21:16:47,013 INFO L192 MainTranslator]: Completed translation [2019-11-15 21:16:47,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47 WrapperNode [2019-11-15 21:16:47,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 21:16:47,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 21:16:47,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 21:16:47,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 21:16:47,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 21:16:47,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 21:16:47,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 21:16:47,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 21:16:47,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... [2019-11-15 21:16:47,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 21:16:47,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 21:16:47,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 21:16:47,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 21:16:47,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 21:16:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 21:16:47,304 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 21:16:47,304 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 21:16:47,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:16:47 BoogieIcfgContainer [2019-11-15 21:16:47,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 21:16:47,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 21:16:47,306 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 21:16:47,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 21:16:47,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:16:47,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 09:16:46" (1/3) ... [2019-11-15 21:16:47,314 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@552555c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:16:47, skipping insertion in model container [2019-11-15 21:16:47,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:16:47,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 09:16:47" (2/3) ... [2019-11-15 21:16:47,315 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@552555c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 09:16:47, skipping insertion in model container [2019-11-15 21:16:47,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 21:16:47,316 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:16:47" (3/3) ... [2019-11-15 21:16:47,317 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c [2019-11-15 21:16:47,374 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 21:16:47,374 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 21:16:47,374 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 21:16:47,375 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 21:16:47,375 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 21:16:47,375 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 21:16:47,375 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 21:16:47,376 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 21:16:47,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 21:16:47,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:47,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:16:47,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:16:47,418 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 21:16:47,418 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:16:47,418 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 21:16:47,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 21:16:47,420 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:47,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:16:47,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:16:47,421 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 21:16:47,421 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:16:47,427 INFO L791 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 8#L20-2true [2019-11-15 21:16:47,427 INFO L793 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~i~0 > 0); 10#L20true assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 8#L20-2true [2019-11-15 21:16:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:47,434 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-15 21:16:47,441 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:47,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323113633] [2019-11-15 21:16:47,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:47,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:47,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:47,526 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-15 21:16:47,528 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:47,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972221274] [2019-11-15 21:16:47,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:47,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:47,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:47,537 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:47,539 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-15 21:16:47,539 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:47,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552046062] [2019-11-15 21:16:47,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:47,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:47,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:47,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552046062] [2019-11-15 21:16:47,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 21:16:47,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 21:16:47,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229690194] [2019-11-15 21:16:47,655 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:47,655 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:47,656 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:47,656 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:47,656 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:16:47,656 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,656 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:47,657 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:47,657 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-11-15 21:16:47,657 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:47,657 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:47,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:47,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:47,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:47,803 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:47,804 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:47,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:16:47,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:16:47,831 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:16:47,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:47,847 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,853 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:16:47,853 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:47,861 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:16:47,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:16:47,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:16:47,890 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:47,890 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:47,890 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:47,890 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:47,890 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:16:47,891 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:47,891 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:47,891 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:47,891 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration1_Loop [2019-11-15 21:16:47,891 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:47,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:47,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:47,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:47,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:47,982 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:47,987 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:16:47,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:47,995 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:47,995 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:47,995 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:47,996 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,006 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:16:48,007 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:16:48,022 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:48,022 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:48,023 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:48,023 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:48,023 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:48,024 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,026 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:16:48,026 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:16:48,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:48,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:48,039 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:48,040 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:16:48,040 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:48,041 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:48,041 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,042 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:16:48,043 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:16:48,050 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:16:48,071 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:16:48,082 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 21:16:48,084 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:16:48,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:16:48,085 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:16:48,086 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-15 21:16:48,088 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:16:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:48,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:16:48,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:48,135 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:16:48,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:48,164 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:16:48,166 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-15 21:16:48,210 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 8 states. [2019-11-15 21:16:48,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 21:16:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:16:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2019-11-15 21:16:48,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-15 21:16:48,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:48,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 21:16:48,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:48,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 21:16:48,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:48,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-15 21:16:48,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:48,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-15 21:16:48,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 21:16:48,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 21:16:48,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-15 21:16:48,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:16:48,227 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 21:16:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-15 21:16:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-15 21:16:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-15 21:16:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-15 21:16:48,254 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-15 21:16:48,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 21:16:48,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 21:16:48,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 21:16:48,257 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2019-11-15 21:16:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 21:16:48,272 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-11-15 21:16:48,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 21:16:48,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-11-15 21:16:48,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:48,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2019-11-15 21:16:48,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 21:16:48,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 21:16:48,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-11-15 21:16:48,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:16:48,274 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 21:16:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-11-15 21:16:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-15 21:16:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 21:16:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-15 21:16:48,275 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 21:16:48,275 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 21:16:48,275 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 21:16:48,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-15 21:16:48,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:48,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:16:48,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:16:48,276 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 21:16:48,276 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:16:48,277 INFO L791 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 93#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 94#L20-2 assume !!(main_~i~0 > 0); 97#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 95#L20-2 [2019-11-15 21:16:48,277 INFO L793 eck$LassoCheckResult]: Loop: 95#L20-2 assume !!(main_~i~0 > 0); 96#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 95#L20-2 [2019-11-15 21:16:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-15 21:16:48,277 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:48,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951418368] [2019-11-15 21:16:48,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,291 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-15 21:16:48,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:48,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522828812] [2019-11-15 21:16:48,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,293 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,299 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,300 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-11-15 21:16:48,300 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:48,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936922401] [2019-11-15 21:16:48,300 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,314 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:48,342 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:48,343 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:48,343 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:48,343 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:48,343 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:16:48,343 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,343 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:48,343 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:48,344 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-11-15 21:16:48,344 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:48,344 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:48,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:48,423 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:16:48,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:48,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:16:48,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:16:48,435 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:48,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:16:48,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:16:48,453 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:48,462 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:16:48,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:16:48,496 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,508 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:16:48,511 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:48,511 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:48,511 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:48,511 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:48,511 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:16:48,511 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,511 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:48,512 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:48,512 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration2_Loop [2019-11-15 21:16:48,512 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:48,512 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:48,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,582 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:48,583 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:16:48,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:48,584 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:48,585 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:48,585 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:48,585 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,587 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:16:48,587 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:16:48,591 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:48,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:48,592 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:48,593 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:48,593 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:48,593 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,595 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:16:48,595 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:16:48,606 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:48,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:48,611 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:48,612 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:16:48,612 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:48,612 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:48,612 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,614 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:16:48,614 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:16:48,620 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:16:48,629 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:16:48,633 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 21:16:48,634 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:16:48,634 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:16:48,635 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:16:48,635 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-15 21:16:48,635 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:16:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:48,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:16:48,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:48,666 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:16:48,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:48,678 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:16:48,679 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-11-15 21:16:48,697 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-11-15 21:16:48,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 21:16:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:16:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 21:16:48,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 21:16:48,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:48,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 21:16:48,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:48,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-15 21:16:48,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:48,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-11-15 21:16:48,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:48,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2019-11-15 21:16:48,701 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 21:16:48,701 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 21:16:48,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-15 21:16:48,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:16:48,701 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:16:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-15 21:16:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-15 21:16:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-15 21:16:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-15 21:16:48,703 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:16:48,703 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-15 21:16:48,703 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 21:16:48,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-15 21:16:48,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 21:16:48,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:16:48,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:16:48,704 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-15 21:16:48,704 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:16:48,705 INFO L791 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 148#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 149#L20-2 assume !!(main_~i~0 > 0); 156#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 155#L20-2 assume !!(main_~i~0 > 0); 154#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 150#L20-2 [2019-11-15 21:16:48,705 INFO L793 eck$LassoCheckResult]: Loop: 150#L20-2 assume !!(main_~i~0 > 0); 151#L20 assume main_~i~0 < main_~m~0;main_~i~0 := main_~i~0 - 1; 150#L20-2 [2019-11-15 21:16:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,705 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2019-11-15 21:16:48,705 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:48,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282868140] [2019-11-15 21:16:48,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,734 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-11-15 21:16:48,736 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:48,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052671319] [2019-11-15 21:16:48,736 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,753 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:48,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:48,754 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2019-11-15 21:16:48,754 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:48,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780796724] [2019-11-15 21:16:48,755 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:48,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:48,772 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:48,787 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:48,787 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:48,787 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:48,787 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:48,787 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:16:48,787 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,787 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:48,787 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:48,787 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-11-15 21:16:48,788 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:48,788 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:48,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,852 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:48,853 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:48,858 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:16:48,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:16:48,878 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,894 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:16:48,897 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:48,897 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:48,897 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:48,897 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:48,897 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:16:48,898 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:48,898 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:48,898 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:48,898 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration3_Loop [2019-11-15 21:16:48,898 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:48,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:48,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:48,975 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:48,975 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:16:48,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:48,976 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:48,977 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:16:48,977 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:48,977 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:48,977 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:48,978 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:16:48,978 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:16:48,990 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:16:48,993 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 21:16:49,005 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 21:16:49,006 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:16:49,007 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 21:16:49,007 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:16:49,007 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-15 21:16:49,008 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 21:16:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:49,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:16:49,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:49,058 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:16:49,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:49,071 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:16:49,071 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 21:16:49,085 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-15 21:16:49,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 21:16:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:16:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 21:16:49,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 21:16:49,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:49,087 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 21:16:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:49,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:16:49,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:49,132 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:16:49,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:49,144 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:16:49,145 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 21:16:49,159 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-15 21:16:49,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 21:16:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:16:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 21:16:49,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 21:16:49,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:49,162 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 21:16:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:49,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 21:16:49,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:49,198 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 21:16:49,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:49,215 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 21:16:49,215 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 21:16:49,239 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 4 states. [2019-11-15 21:16:49,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 21:16:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 21:16:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-15 21:16:49,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 21:16:49,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:49,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-15 21:16:49,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:49,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-15 21:16:49,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:49,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-11-15 21:16:49,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 21:16:49,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 16 transitions. [2019-11-15 21:16:49,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 21:16:49,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 21:16:49,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-11-15 21:16:49,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 21:16:49,245 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-15 21:16:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-11-15 21:16:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-11-15 21:16:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 21:16:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-15 21:16:49,247 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 21:16:49,247 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-15 21:16:49,247 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 21:16:49,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-15 21:16:49,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-15 21:16:49,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 21:16:49,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 21:16:49,248 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 21:16:49,248 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 21:16:49,249 INFO L791 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~i~0, main_~m~0, main_~n~0;havoc main_~i~0;havoc main_~m~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 300#L17 assume main_~m~0 > 0 && main_~n~0 > main_~m~0;main_~i~0 := main_~n~0; 301#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-11-15 21:16:49,249 INFO L793 eck$LassoCheckResult]: Loop: 302#L20 assume !(main_~i~0 < main_~m~0);main_~i~0 := main_~i~0 - main_~m~0; 305#L20-2 assume !!(main_~i~0 > 0); 302#L20 [2019-11-15 21:16:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:49,249 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-15 21:16:49,249 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:49,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217761742] [2019-11-15 21:16:49,253 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:49,253 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:49,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:49,271 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-11-15 21:16:49,272 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:49,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969599544] [2019-11-15 21:16:49,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:49,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:49,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:49,284 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 3 times [2019-11-15 21:16:49,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 21:16:49,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766046288] [2019-11-15 21:16:49,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:49,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 21:16:49,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 21:16:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 21:16:49,306 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 21:16:49,363 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:49,363 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:49,364 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:49,364 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:49,364 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 21:16:49,364 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:49,364 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:49,364 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:49,364 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-11-15 21:16:49,364 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:49,365 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:49,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,469 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:49,469 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:49,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:49,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 21:16:49,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 21:16:49,494 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:16:49,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 21:16:49,512 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88564062-24d0-4900-a43e-59e421be3685/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 21:16:49,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 21:16:49,555 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:49,719 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 21:16:49,720 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 21:16:49,720 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 21:16:49,721 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 21:16:49,721 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 21:16:49,721 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 21:16:49,721 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 21:16:49,721 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 21:16:49,721 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 21:16:49,721 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi4.c_Iteration4_Lasso [2019-11-15 21:16:49,721 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 21:16:49,721 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 21:16:49,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 21:16:49,835 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 21:16:49,835 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 21:16:49,836 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:49,837 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:49,837 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:16:49,837 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:49,837 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:49,837 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:49,838 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:16:49,838 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:16:49,839 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:49,839 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:49,839 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:49,840 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:16:49,840 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:49,840 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:49,840 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:49,840 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:16:49,841 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:16:49,841 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:49,842 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:49,842 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:49,842 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 21:16:49,843 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:49,843 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:49,843 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:49,843 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 21:16:49,843 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 21:16:49,844 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:49,844 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:49,845 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:49,845 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:49,845 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:49,851 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:49,854 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:16:49,854 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:16:49,891 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 21:16:49,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 21:16:49,896 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 21:16:49,897 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 21:16:49,897 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 21:16:49,897 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 21:16:49,899 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 21:16:49,901 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 21:16:49,960 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 21:16:49,992 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-15 21:16:49,993 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. [2019-11-15 21:16:49,994 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 21:16:49,997 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-15 21:16:49,997 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 21:16:50,000 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~m~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~m~0 Supporting invariants [1*ULTIMATE.start_main_~m~0 - 1 >= 0] [2019-11-15 21:16:50,010 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-15 21:16:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 21:16:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:50,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 21:16:50,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 21:16:50,074 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 21:16:50,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 21:16:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 21:16:50,101 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-15 21:16:50,101 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-15 21:16:50,143 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-11-15 21:16:50,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 21:16:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 21:16:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-15 21:16:50,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 21:16:50,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:50,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 21:16:50,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:50,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-15 21:16:50,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 21:16:50,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2019-11-15 21:16:50,147 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:16:50,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-11-15 21:16:50,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 21:16:50,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 21:16:50,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 21:16:50,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 21:16:50,147 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:16:50,147 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:16:50,147 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 21:16:50,148 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 21:16:50,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 21:16:50,148 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 21:16:50,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 21:16:50,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 09:16:50 BoogieIcfgContainer [2019-11-15 21:16:50,159 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 21:16:50,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 21:16:50,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 21:16:50,161 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 21:16:50,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 09:16:47" (3/4) ... [2019-11-15 21:16:50,164 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 21:16:50,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 21:16:50,166 INFO L168 Benchmark]: Toolchain (without parser) took 3436.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -146.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:16:50,167 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:16:50,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-15 21:16:50,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:16:50,169 INFO L168 Benchmark]: Boogie Preprocessor took 18.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:16:50,177 INFO L168 Benchmark]: RCFGBuilder took 239.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 21:16:50,177 INFO L168 Benchmark]: BuchiAutomizer took 2853.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2019-11-15 21:16:50,178 INFO L168 Benchmark]: Witness Printer took 4.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 21:16:50,185 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 239.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2853.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function i + -1 * m and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 29 SDslu, 6 SDs, 0 SdLazy, 47 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax183 hnf98 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf94 smp100 dnf100 smp100 tf108 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...