./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:55:02,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:55:02,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:55:02,152 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:55:02,152 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:55:02,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:55:02,153 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:55:02,154 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:55:02,154 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:55:02,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:55:02,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:55:02,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:55:02,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:55:02,156 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:55:02,157 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:55:02,157 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:55:02,158 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:55:02,159 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:55:02,160 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:55:02,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:55:02,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:55:02,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:55:02,163 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:55:02,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:55:02,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:55:02,163 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:55:02,164 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:55:02,164 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:55:02,165 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:55:02,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:55:02,165 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:55:02,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:55:02,166 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:55:02,166 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:55:02,167 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:55:02,167 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:55:02,167 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-09 10:55:02,175 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:55:02,175 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:55:02,176 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 10:55:02,176 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 10:55:02,176 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 10:55:02,176 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 10:55:02,176 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 10:55:02,176 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 10:55:02,176 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 10:55:02,177 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 10:55:02,177 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 10:55:02,178 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 10:55:02,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:55:02,178 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 10:55:02,178 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 10:55:02,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 10:55:02,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:55:02,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:55:02,179 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 10:55:02,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:55:02,179 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 10:55:02,179 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 10:55:02,179 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 10:55:02,180 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2018-12-09 10:55:02,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:55:02,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:55:02,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:55:02,206 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:55:02,206 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:55:02,207 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c [2018-12-09 10:55:02,242 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/data/3176e22d9/d2d9a2e1981a4034b13dbb80e4829170/FLAG96bd4583d [2018-12-09 10:55:02,676 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:55:02,676 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c [2018-12-09 10:55:02,680 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/data/3176e22d9/d2d9a2e1981a4034b13dbb80e4829170/FLAG96bd4583d [2018-12-09 10:55:02,688 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/data/3176e22d9/d2d9a2e1981a4034b13dbb80e4829170 [2018-12-09 10:55:02,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:55:02,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:55:02,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:55:02,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:55:02,693 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:55:02,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dabb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02, skipping insertion in model container [2018-12-09 10:55:02,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:55:02,709 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:55:02,790 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:55:02,792 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:55:02,802 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:55:02,809 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:55:02,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02 WrapperNode [2018-12-09 10:55:02,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:55:02,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:55:02,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:55:02,810 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:55:02,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:55:02,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:55:02,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:55:02,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:55:02,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... [2018-12-09 10:55:02,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:55:02,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:55:02,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:55:02,846 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:55:02,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:55:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:55:02,990 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:55:02,991 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-09 10:55:02,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:55:02 BoogieIcfgContainer [2018-12-09 10:55:02,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:55:02,992 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 10:55:02,992 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 10:55:02,995 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 10:55:02,996 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 10:55:02,996 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 10:55:02" (1/3) ... [2018-12-09 10:55:02,997 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c3cc2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 10:55:02, skipping insertion in model container [2018-12-09 10:55:02,997 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 10:55:02,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:55:02" (2/3) ... [2018-12-09 10:55:02,997 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c3cc2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 10:55:02, skipping insertion in model container [2018-12-09 10:55:02,997 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 10:55:02,997 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:55:02" (3/3) ... [2018-12-09 10:55:02,999 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c [2018-12-09 10:55:03,034 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 10:55:03,034 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 10:55:03,035 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 10:55:03,035 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 10:55:03,035 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:55:03,035 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:55:03,035 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 10:55:03,035 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:55:03,035 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 10:55:03,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-12-09 10:55:03,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:03,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:03,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:03,062 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 10:55:03,062 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:55:03,062 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 10:55:03,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-12-09 10:55:03,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:03,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:03,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:03,063 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 10:55:03,063 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:55:03,067 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L21true assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 5#L23-2true [2018-12-09 10:55:03,068 INFO L796 eck$LassoCheckResult]: Loop: 5#L23-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 8#L25-2true assume !(main_~j~0 < main_~m~0); 7#L25-3true main_~i~0 := 1 + main_~i~0; 5#L23-2true [2018-12-09 10:55:03,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,071 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-09 10:55:03,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,137 INFO L82 PathProgramCache]: Analyzing trace with hash 42943, now seen corresponding path program 1 times [2018-12-09 10:55:03,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash 29684988, now seen corresponding path program 1 times [2018-12-09 10:55:03,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,189 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:03,190 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:03,190 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:03,190 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:03,190 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:03,190 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,190 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:03,191 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:03,191 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-09 10:55:03,191 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:03,191 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:03,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,288 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:03,289 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,296 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:03,296 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:03,322 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:03,322 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,325 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:03,325 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:03,341 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:03,341 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,344 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:03,344 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,361 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:03,361 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:03,452 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:03,453 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:03,453 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:03,453 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:03,454 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:03,454 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:03,454 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,454 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:03,454 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:03,454 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-09 10:55:03,454 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:03,454 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:03,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,493 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:03,496 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:03,497 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:03,498 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:03,498 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:03,499 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:03,499 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:03,501 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:03,501 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:03,505 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:03,506 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:03,506 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:03,506 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:03,506 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:03,506 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:03,507 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:03,507 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:03,511 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:03,512 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:03,512 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:03,512 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:03,512 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:03,513 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:03,513 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:03,513 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:03,513 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:03,516 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:03,520 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:55:03,520 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:03,521 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:03,521 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:03,521 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:03,521 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-12-09 10:55:03,522 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:03,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:03,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:03,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:03,573 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 10:55:03,574 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2018-12-09 10:55:03,608 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 42 states and 62 transitions. Complement of second has 8 states. [2018-12-09 10:55:03,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 10:55:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2018-12-09 10:55:03,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2018-12-09 10:55:03,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:03,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 10:55:03,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:03,612 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2018-12-09 10:55:03,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:03,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2018-12-09 10:55:03,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-09 10:55:03,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 14 states and 21 transitions. [2018-12-09 10:55:03,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-09 10:55:03,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-12-09 10:55:03,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2018-12-09 10:55:03,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:03,619 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2018-12-09 10:55:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2018-12-09 10:55:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-12-09 10:55:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 10:55:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2018-12-09 10:55:03,635 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2018-12-09 10:55:03,635 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2018-12-09 10:55:03,635 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 10:55:03,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2018-12-09 10:55:03,636 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-09 10:55:03,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:03,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:03,636 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-09 10:55:03,636 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-09 10:55:03,636 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 98#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 99#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 104#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 96#L28-2 [2018-12-09 10:55:03,636 INFO L796 eck$LassoCheckResult]: Loop: 96#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 96#L28-2 [2018-12-09 10:55:03,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2018-12-09 10:55:03,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,646 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2018-12-09 10:55:03,646 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,650 INFO L82 PathProgramCache]: Analyzing trace with hash 29685042, now seen corresponding path program 1 times [2018-12-09 10:55:03,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,667 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:03,667 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:03,667 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:03,668 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:03,668 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:03,668 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,668 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:03,668 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:03,668 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 10:55:03,668 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:03,668 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:03,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,696 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:03,696 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,699 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:03,699 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:03,713 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:03,714 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,716 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:03,717 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:03,731 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:03,731 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,734 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:03,734 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,751 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:03,752 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:03,858 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:03,860 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:03,860 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:03,860 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:03,860 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:03,860 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:03,860 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,860 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:03,860 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:03,860 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-09 10:55:03,860 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:03,860 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:03,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,887 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:03,887 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:03,888 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:03,889 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:03,889 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:03,889 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:03,889 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:03,890 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:03,890 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:03,894 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:03,894 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:03,895 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:03,895 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:03,895 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:03,895 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:03,897 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:03,897 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:03,900 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:03,901 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:03,901 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:03,902 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:03,902 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:03,902 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:03,902 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:03,903 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:03,903 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:03,906 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:03,909 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 10:55:03,909 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:03,910 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:03,910 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:03,910 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:03,910 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2018-12-09 10:55:03,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:03,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:03,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:03,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:03,929 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:55:03,929 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10 Second operand 2 states. [2018-12-09 10:55:03,941 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 27 states and 43 transitions. Complement of second has 6 states. [2018-12-09 10:55:03,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:55:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2018-12-09 10:55:03,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 1 letters. [2018-12-09 10:55:03,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:03,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2018-12-09 10:55:03,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:03,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-09 10:55:03,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:03,943 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 43 transitions. [2018-12-09 10:55:03,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-09 10:55:03,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 18 states and 27 transitions. [2018-12-09 10:55:03,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-09 10:55:03,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-12-09 10:55:03,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 27 transitions. [2018-12-09 10:55:03,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:03,945 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2018-12-09 10:55:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 27 transitions. [2018-12-09 10:55:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-09 10:55:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-09 10:55:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2018-12-09 10:55:03,947 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2018-12-09 10:55:03,947 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2018-12-09 10:55:03,947 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 10:55:03,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2018-12-09 10:55:03,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-12-09 10:55:03,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:03,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:03,948 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-09 10:55:03,948 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:55:03,948 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 181#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 182#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 180#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 188#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 175#L28-3 main_~i~0 := main_~k~0; 186#L25-2 [2018-12-09 10:55:03,949 INFO L796 eck$LassoCheckResult]: Loop: 186#L25-2 assume !(main_~j~0 < main_~m~0); 187#L25-3 main_~i~0 := 1 + main_~i~0; 189#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 186#L25-2 [2018-12-09 10:55:03,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash 920236275, now seen corresponding path program 1 times [2018-12-09 10:55:03,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash 50233, now seen corresponding path program 2 times [2018-12-09 10:55:03,959 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:03,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:03,965 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 1 times [2018-12-09 10:55:03,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:03,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:03,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:03,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:03,995 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:03,995 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:03,996 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:03,996 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:03,996 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:03,996 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:03,996 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:03,996 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:03,996 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 10:55:03,996 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:03,996 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:03,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:03,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,037 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:04,037 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:04,039 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:04,064 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:04,064 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,066 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:04,067 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:04,069 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:04,069 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,084 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:04,085 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:04,100 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:04,100 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,102 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:04,103 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,120 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:04,120 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:04,467 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:04,468 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:04,468 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:04,468 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:04,468 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:04,468 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:04,468 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,468 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:04,468 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:04,469 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-09 10:55:04,469 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:04,469 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:04,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,508 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:04,509 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:04,509 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:04,509 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:04,509 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:04,509 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:04,509 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:04,509 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:04,510 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:04,510 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:04,511 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:04,511 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:04,511 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:04,511 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:04,512 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:04,512 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:04,512 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:04,512 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:04,514 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:04,515 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:04,515 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:04,515 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:04,515 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:04,515 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:04,515 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:04,516 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:04,516 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:04,517 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:04,519 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:55:04,519 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:04,519 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:04,519 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:04,519 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:04,520 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-12-09 10:55:04,520 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:04,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:04,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 10:55:04,545 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-12-09 10:55:04,561 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 31 states and 51 transitions. Complement of second has 8 states. [2018-12-09 10:55:04,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 10:55:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2018-12-09 10:55:04,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-09 10:55:04,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 10:55:04,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-09 10:55:04,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,562 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 51 transitions. [2018-12-09 10:55:04,563 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-09 10:55:04,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 34 transitions. [2018-12-09 10:55:04,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-12-09 10:55:04,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-12-09 10:55:04,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 34 transitions. [2018-12-09 10:55:04,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:04,564 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2018-12-09 10:55:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 34 transitions. [2018-12-09 10:55:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-09 10:55:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 10:55:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2018-12-09 10:55:04,565 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-12-09 10:55:04,565 INFO L608 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2018-12-09 10:55:04,565 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 10:55:04,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2018-12-09 10:55:04,566 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-09 10:55:04,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:04,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:04,566 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-12-09 10:55:04,566 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-12-09 10:55:04,566 INFO L794 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 277#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 278#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 288#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 287#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 276#L28-3 main_~i~0 := main_~k~0; 286#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 273#L28-2 [2018-12-09 10:55:04,566 INFO L796 eck$LassoCheckResult]: Loop: 273#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 273#L28-2 [2018-12-09 10:55:04,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 2 times [2018-12-09 10:55:04,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:04,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:04,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:04,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 2 times [2018-12-09 10:55:04,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:04,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:04,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:04,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -416201988, now seen corresponding path program 1 times [2018-12-09 10:55:04,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:04,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:04,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:04,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:04,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:55:04,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 10:55:04,621 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:04,622 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:04,622 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:04,622 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:04,622 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:04,622 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,622 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:04,622 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:04,622 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 10:55:04,622 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:04,622 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:04,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,658 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:04,658 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,660 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:04,660 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,676 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:04,676 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:04,782 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:04,783 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:04,783 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:04,783 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:04,783 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:04,783 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:04,783 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,783 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:04,783 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:04,783 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-09 10:55:04,784 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:04,784 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:04,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,817 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:04,817 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:04,818 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:04,818 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:04,818 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:04,819 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:04,819 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:04,819 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:04,819 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:04,819 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:04,822 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:04,823 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 10:55:04,824 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:04,824 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:04,824 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:04,824 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:04,824 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2018-12-09 10:55:04,825 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:04,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:04,841 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:55:04,841 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2018-12-09 10:55:04,848 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2018-12-09 10:55:04,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:55:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-09 10:55:04,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2018-12-09 10:55:04,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,849 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:55:04,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:04,864 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:55:04,864 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2018-12-09 10:55:04,869 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2018-12-09 10:55:04,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:55:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-09 10:55:04,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2018-12-09 10:55:04,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,869 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:55:04,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:04,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:04,886 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:55:04,886 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2018-12-09 10:55:04,894 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 36 states and 60 transitions. Complement of second has 5 states. [2018-12-09 10:55:04,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-12-09 10:55:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2018-12-09 10:55:04,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 1 letters. [2018-12-09 10:55:04,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 1 letters. [2018-12-09 10:55:04,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-09 10:55:04,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:04,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 60 transitions. [2018-12-09 10:55:04,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-09 10:55:04,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 22 states and 33 transitions. [2018-12-09 10:55:04,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-09 10:55:04,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-12-09 10:55:04,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2018-12-09 10:55:04,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:04,900 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-12-09 10:55:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2018-12-09 10:55:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-12-09 10:55:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-09 10:55:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2018-12-09 10:55:04,902 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2018-12-09 10:55:04,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 10:55:04,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 10:55:04,904 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2018-12-09 10:55:04,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:55:04,925 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2018-12-09 10:55:04,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 10:55:04,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2018-12-09 10:55:04,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:04,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 26 transitions. [2018-12-09 10:55:04,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-12-09 10:55:04,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-09 10:55:04,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2018-12-09 10:55:04,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:04,927 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-12-09 10:55:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2018-12-09 10:55:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-09 10:55:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-09 10:55:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2018-12-09 10:55:04,928 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-12-09 10:55:04,928 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-12-09 10:55:04,928 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 10:55:04,928 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2018-12-09 10:55:04,928 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:04,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:04,929 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:04,929 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-12-09 10:55:04,929 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:55:04,929 INFO L794 eck$LassoCheckResult]: Stem: 535#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 533#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 534#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 540#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 539#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 528#L28-3 main_~i~0 := main_~k~0; 538#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2018-12-09 10:55:04,929 INFO L796 eck$LassoCheckResult]: Loop: 525#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 526#L28-3 main_~i~0 := main_~k~0; 530#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2018-12-09 10:55:04,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 3 times [2018-12-09 10:55:04,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:04,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:04,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash 58767, now seen corresponding path program 1 times [2018-12-09 10:55:04,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:04,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:04,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:04,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:04,938 INFO L82 PathProgramCache]: Analyzing trace with hash -538152755, now seen corresponding path program 4 times [2018-12-09 10:55:04,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:04,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:04,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:04,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:04,963 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:04,963 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:04,963 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:04,963 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:04,963 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:04,963 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:04,963 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:04,963 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:04,963 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-09 10:55:04,963 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:04,963 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:04,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:04,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,013 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:05,013 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,014 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,014 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,019 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:05,019 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=1, ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~N~0=-7} Honda state: {ULTIMATE.start_main_~k~0=1, ULTIMATE.start_main_~i~0=1, ULTIMATE.start_main_~N~0=-7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,048 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:05,048 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,052 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,066 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:05,066 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,069 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,069 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,086 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:05,086 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,188 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:05,190 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:05,190 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:05,190 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:05,190 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:05,190 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:05,190 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,190 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:05,190 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:05,190 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-09 10:55:05,191 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:05,191 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:05,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,232 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:05,232 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:05,232 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,233 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,233 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,233 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,233 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:05,234 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:05,235 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:05,235 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,235 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,235 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,235 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,236 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:05,236 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:05,238 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:05,238 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,238 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,238 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:05,239 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,239 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,239 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,239 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:05,239 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:05,240 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:05,240 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,240 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,240 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:05,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,241 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:05,241 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:05,242 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:05,244 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:55:05,244 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:05,244 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:05,244 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:05,244 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:05,244 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-12-09 10:55:05,245 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:05,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:05,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:05,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:05,263 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 10:55:05,263 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-12-09 10:55:05,270 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 5 states. [2018-12-09 10:55:05,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 10:55:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-12-09 10:55:05,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-09 10:55:05,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:05,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2018-12-09 10:55:05,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:05,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 6 letters. [2018-12-09 10:55:05,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:05,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2018-12-09 10:55:05,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:05,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 33 states and 44 transitions. [2018-12-09 10:55:05,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-12-09 10:55:05,272 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-12-09 10:55:05,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2018-12-09 10:55:05,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:05,272 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2018-12-09 10:55:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2018-12-09 10:55:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-12-09 10:55:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 10:55:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2018-12-09 10:55:05,274 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2018-12-09 10:55:05,274 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2018-12-09 10:55:05,274 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-09 10:55:05,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 35 transitions. [2018-12-09 10:55:05,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:05,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:05,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:05,275 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-12-09 10:55:05,275 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:55:05,275 INFO L794 eck$LassoCheckResult]: Stem: 640#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 635#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 636#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 637#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 651#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 647#L28-3 main_~i~0 := main_~k~0; 648#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 649#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 650#L28-3 main_~i~0 := main_~k~0; 655#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2018-12-09 10:55:05,275 INFO L796 eck$LassoCheckResult]: Loop: 641#L25-3 main_~i~0 := 1 + main_~i~0; 642#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 653#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2018-12-09 10:55:05,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash -538152757, now seen corresponding path program 1 times [2018-12-09 10:55:05,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:05,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:05,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:05,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,284 INFO L82 PathProgramCache]: Analyzing trace with hash 67693, now seen corresponding path program 3 times [2018-12-09 10:55:05,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:05,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:05,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:05,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1004170083, now seen corresponding path program 2 times [2018-12-09 10:55:05,288 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:05,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:05,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:05,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 10:55:05,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 10:55:05,307 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 10:55:05,314 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 10:55:05,319 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 10:55:05,320 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 10:55:05,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 10:55:05,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 10:55:05,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-09 10:55:05,361 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:05,361 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:05,361 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:05,361 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:05,361 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:05,361 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,361 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:05,361 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:05,362 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-09 10:55:05,362 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:05,362 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:05,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,396 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:05,396 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,398 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,398 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,413 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:05,413 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,430 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,431 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,445 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:05,445 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,448 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,449 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,464 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:05,464 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,718 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:05,720 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:05,720 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:05,720 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:05,720 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:05,720 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:05,720 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,720 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:05,720 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:05,720 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-09 10:55:05,720 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:05,720 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:05,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,759 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:05,759 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:05,760 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,760 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,760 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:05,760 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,760 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,760 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,761 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:05,761 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:05,762 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:05,762 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,762 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,762 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,762 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,763 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,763 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:05,763 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:05,765 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:05,766 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:05,766 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:05,766 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:05,766 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:05,767 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:05,767 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:05,767 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:05,767 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:05,769 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:05,770 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:55:05,770 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:05,771 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:05,771 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:05,771 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:05,771 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-12-09 10:55:05,771 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:05,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:05,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:05,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:05,821 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 10:55:05,821 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-12-09 10:55:05,832 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 65 states and 90 transitions. Complement of second has 7 states. [2018-12-09 10:55:05,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 10:55:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-09 10:55:05,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2018-12-09 10:55:05,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:05,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 3 letters. [2018-12-09 10:55:05,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:05,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 6 letters. [2018-12-09 10:55:05,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:05,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 90 transitions. [2018-12-09 10:55:05,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-09 10:55:05,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 50 states and 68 transitions. [2018-12-09 10:55:05,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-12-09 10:55:05,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-09 10:55:05,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 68 transitions. [2018-12-09 10:55:05,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:05,836 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 68 transitions. [2018-12-09 10:55:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 68 transitions. [2018-12-09 10:55:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2018-12-09 10:55:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 10:55:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2018-12-09 10:55:05,838 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 49 transitions. [2018-12-09 10:55:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 10:55:05,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 10:55:05,838 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 6 states. [2018-12-09 10:55:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:55:05,863 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2018-12-09 10:55:05,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 10:55:05,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 49 transitions. [2018-12-09 10:55:05,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-09 10:55:05,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 49 transitions. [2018-12-09 10:55:05,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-12-09 10:55:05,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-12-09 10:55:05,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 49 transitions. [2018-12-09 10:55:05,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:05,864 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2018-12-09 10:55:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 49 transitions. [2018-12-09 10:55:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2018-12-09 10:55:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 10:55:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-12-09 10:55:05,865 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-12-09 10:55:05,865 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-12-09 10:55:05,865 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-09 10:55:05,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2018-12-09 10:55:05,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-12-09 10:55:05,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:05,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:05,866 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:55:05,866 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-12-09 10:55:05,866 INFO L794 eck$LassoCheckResult]: Stem: 909#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 907#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 908#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 916#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 917#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 901#L28-3 main_~i~0 := main_~k~0; 912#L25-2 assume !(main_~j~0 < main_~m~0); 910#L25-3 [2018-12-09 10:55:05,866 INFO L796 eck$LassoCheckResult]: Loop: 910#L25-3 main_~i~0 := 1 + main_~i~0; 902#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 903#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 898#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 899#L28-3 main_~i~0 := main_~k~0; 920#L25-2 assume !(main_~j~0 < main_~m~0); 910#L25-3 [2018-12-09 10:55:05,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446527, now seen corresponding path program 2 times [2018-12-09 10:55:05,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:05,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:05,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:05,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2016730719, now seen corresponding path program 1 times [2018-12-09 10:55:05,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:05,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:05,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:05,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash -504812577, now seen corresponding path program 3 times [2018-12-09 10:55:05,875 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:05,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:05,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:55:05,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:05,900 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:05,900 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:05,900 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:05,900 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:05,900 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:05,900 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,900 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:05,900 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:05,900 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-09 10:55:05,900 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:05,900 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:05,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:05,941 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:05,941 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,943 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,943 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:05,945 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:05,945 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,960 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:05,960 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:05,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:05,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:17,997 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-09 10:55:18,000 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:18,000 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:18,000 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:18,000 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:18,000 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:18,000 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,000 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:18,000 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:18,001 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-09 10:55:18,001 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:18,001 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:18,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,056 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:18,056 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:18,056 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:18,057 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:18,057 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:18,057 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:18,057 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:18,057 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:18,057 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:18,057 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:18,059 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:18,060 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:55:18,060 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:18,060 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:18,060 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:18,061 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:18,061 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-12-09 10:55:18,061 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:18,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:18,103 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-12-09 10:55:18,103 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2018-12-09 10:55:18,115 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 49 states and 69 transitions. Complement of second has 7 states. [2018-12-09 10:55:18,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-09 10:55:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-09 10:55:18,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2018-12-09 10:55:18,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,116 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:55:18,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:18,154 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2018-12-09 10:55:18,154 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2018-12-09 10:55:18,216 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 56 states and 79 transitions. Complement of second has 10 states. [2018-12-09 10:55:18,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-09 10:55:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2018-12-09 10:55:18,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 6 letters. [2018-12-09 10:55:18,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2018-12-09 10:55:18,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 12 letters. [2018-12-09 10:55:18,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 79 transitions. [2018-12-09 10:55:18,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 10:55:18,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 43 states and 60 transitions. [2018-12-09 10:55:18,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-12-09 10:55:18,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-09 10:55:18,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 60 transitions. [2018-12-09 10:55:18,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 10:55:18,220 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 60 transitions. [2018-12-09 10:55:18,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 60 transitions. [2018-12-09 10:55:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2018-12-09 10:55:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-09 10:55:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2018-12-09 10:55:18,222 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2018-12-09 10:55:18,222 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2018-12-09 10:55:18,222 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-09 10:55:18,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 52 transitions. [2018-12-09 10:55:18,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 10:55:18,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 10:55:18,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 10:55:18,223 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:55:18,223 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 10:55:18,223 INFO L794 eck$LassoCheckResult]: Stem: 1160#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 1158#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 1159#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1174#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1171#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1168#L28-3 main_~i~0 := main_~k~0; 1167#L25-2 assume !(main_~j~0 < main_~m~0); 1161#L25-3 main_~i~0 := 1 + main_~i~0; 1154#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1155#L25-2 [2018-12-09 10:55:18,224 INFO L796 eck$LassoCheckResult]: Loop: 1155#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1150#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1151#L28-3 main_~i~0 := main_~k~0; 1155#L25-2 [2018-12-09 10:55:18,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 4 times [2018-12-09 10:55:18,224 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:18,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:18,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:18,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:18,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:18,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,231 INFO L82 PathProgramCache]: Analyzing trace with hash 51867, now seen corresponding path program 2 times [2018-12-09 10:55:18,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:18,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:18,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:18,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:18,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:18,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1817399595, now seen corresponding path program 5 times [2018-12-09 10:55:18,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 10:55:18,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 10:55:18,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:18,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 10:55:18,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:55:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 10:55:18,257 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:18,257 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:18,257 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:18,257 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:18,258 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 10:55:18,258 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,258 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:18,258 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:18,258 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration8_Loop [2018-12-09 10:55:18,258 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:18,258 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:18,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,304 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:18,304 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,306 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:18,306 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:18,320 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:18,320 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,324 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:18,324 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:18,338 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:18,338 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,341 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:18,341 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:18,344 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 10:55:18,344 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=-7, ULTIMATE.start_main_~i~0=-7, ULTIMATE.start_main_~N~0=-6} Honda state: {ULTIMATE.start_main_~k~0=-7, ULTIMATE.start_main_~i~0=-7, ULTIMATE.start_main_~N~0=-6} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,359 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 10:55:18,359 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_994cea4e-6fb4-41c6-8911-6ee81611d92a/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,375 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 10:55:18,376 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 10:55:18,478 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 10:55:18,480 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 10:55:18,480 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 10:55:18,480 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 10:55:18,480 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 10:55:18,480 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 10:55:18,480 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 10:55:18,480 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 10:55:18,480 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 10:55:18,480 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop_true-termination_true-no-overflow.c_Iteration8_Loop [2018-12-09 10:55:18,480 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 10:55:18,480 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 10:55:18,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 10:55:18,519 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 10:55:18,519 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 10:55:18,519 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:18,520 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:18,520 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:18,520 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:18,520 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:18,521 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-09 10:55:18,521 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-09 10:55:18,523 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:18,523 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:18,523 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:18,524 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:18,524 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:18,524 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:18,524 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:18,524 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:18,525 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:18,525 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 10:55:18,526 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 10:55:18,526 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 10:55:18,526 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 10:55:18,526 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 10:55:18,527 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 10:55:18,527 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 10:55:18,527 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 10:55:18,527 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 10:55:18,528 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 10:55:18,530 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-09 10:55:18,530 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 10:55:18,530 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 10:55:18,530 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 10:55:18,530 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 10:55:18,531 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-12-09 10:55:18,531 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 10:55:18,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:18,557 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 10:55:18,557 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-12-09 10:55:18,562 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 55 states and 81 transitions. Complement of second has 5 states. [2018-12-09 10:55:18,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 10:55:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2018-12-09 10:55:18,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 10:55:18,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,563 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:55:18,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:18,587 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 10:55:18,587 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-12-09 10:55:18,596 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 51 states and 75 transitions. Complement of second has 7 states. [2018-12-09 10:55:18,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 10:55:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-12-09 10:55:18,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 10:55:18,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,597 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 10:55:18,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:55:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:55:18,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 10:55:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 10:55:18,621 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 10:55:18,621 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2018-12-09 10:55:18,626 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 69 states and 104 transitions. Complement of second has 4 states. [2018-12-09 10:55:18,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 10:55:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 10:55:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2018-12-09 10:55:18,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 10:55:18,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-09 10:55:18,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-09 10:55:18,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 10:55:18,627 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 104 transitions. [2018-12-09 10:55:18,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 10:55:18,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 0 states and 0 transitions. [2018-12-09 10:55:18,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 10:55:18,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 10:55:18,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 10:55:18,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 10:55:18,628 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:55:18,628 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:55:18,628 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:55:18,628 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-12-09 10:55:18,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 10:55:18,628 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 10:55:18,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 10:55:18,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 10:55:18 BoogieIcfgContainer [2018-12-09 10:55:18,632 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 10:55:18,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:55:18,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:55:18,633 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:55:18,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:55:02" (3/4) ... [2018-12-09 10:55:18,635 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 10:55:18,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:55:18,636 INFO L168 Benchmark]: Toolchain (without parser) took 15945.63 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 350.2 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -111.9 MB). Peak memory consumption was 238.3 MB. Max. memory is 11.5 GB. [2018-12-09 10:55:18,637 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:55:18,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 118.75 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 10:55:18,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.58 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:55:18,637 INFO L168 Benchmark]: Boogie Preprocessor took 17.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 47.2 MB). Free memory was 945.2 MB in the beginning and 1.0 GB in the end (delta: -86.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2018-12-09 10:55:18,638 INFO L168 Benchmark]: RCFGBuilder took 145.40 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 188.7 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -187.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-12-09 10:55:18,638 INFO L168 Benchmark]: BuchiAutomizer took 15640.62 ms. Allocated memory was 1.3 GB in the beginning and 1.4 GB in the end (delta: 114.3 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 150.3 MB). Peak memory consumption was 264.6 MB. Max. memory is 11.5 GB. [2018-12-09 10:55:18,638 INFO L168 Benchmark]: Witness Printer took 2.77 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:55:18,640 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 118.75 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.58 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 47.2 MB). Free memory was 945.2 MB in the beginning and 1.0 GB in the end (delta: -86.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 145.40 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 188.7 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -187.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 15640.62 ms. Allocated memory was 1.3 GB in the beginning and 1.4 GB in the end (delta: 114.3 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 150.3 MB). Peak memory consumption was 264.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.77 ms. Allocated memory is still 1.4 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 10 terminating modules (2 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * k + N and consists of 4 locations. One deterministic module has affine ranking function -1 * i + n and consists of 5 locations. One deterministic module has affine ranking function m + -1 * j and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function n + -1 * i and consists of 6 locations. One nondeterministic module has affine ranking function -1 * k + N and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.6s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 14.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 49 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 163 SDtfs, 160 SDslu, 63 SDs, 0 SdLazy, 133 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax169 hnf97 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 13.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...