./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/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 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 00:04:26,207 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 00:04:26,209 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 00:04:26,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 00:04:26,215 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 00:04:26,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 00:04:26,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 00:04:26,218 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 00:04:26,219 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 00:04:26,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 00:04:26,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 00:04:26,221 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 00:04:26,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 00:04:26,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 00:04:26,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 00:04:26,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 00:04:26,224 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 00:04:26,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 00:04:26,227 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 00:04:26,228 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 00:04:26,229 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 00:04:26,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 00:04:26,232 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 00:04:26,232 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 00:04:26,232 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 00:04:26,233 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 00:04:26,234 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 00:04:26,234 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 00:04:26,235 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 00:04:26,236 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 00:04:26,236 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 00:04:26,237 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 00:04:26,237 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 00:04:26,237 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 00:04:26,238 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 00:04:26,239 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 00:04:26,239 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 00:04:26,249 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 00:04:26,249 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 00:04:26,250 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 00:04:26,250 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 00:04:26,250 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 00:04:26,250 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 00:04:26,250 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 00:04:26,250 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 00:04:26,251 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 00:04:26,251 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 00:04:26,251 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 00:04:26,251 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 00:04:26,251 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 00:04:26,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 00:04:26,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 00:04:26,252 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 00:04:26,253 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 00:04:26,253 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 00:04:26,253 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 00:04:26,253 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 00:04:26,253 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 00:04:26,253 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 00:04:26,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 00:04:26,254 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 00:04:26,254 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 00:04:26,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 00:04:26,254 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 00:04:26,254 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 00:04:26,255 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 00:04:26,255 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/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 -> 775ea6e0a1296fd7b29dfc5da5a4c77d3361f4a8 [2018-11-23 00:04:26,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 00:04:26,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 00:04:26,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 00:04:26,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 00:04:26,292 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 00:04:26,292 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c [2018-11-23 00:04:26,328 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/data/769d3a97d/af8c8bd8b98b47ff8628d4f82c15ced7/FLAG3328f081b [2018-11-23 00:04:26,722 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 00:04:26,722 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c [2018-11-23 00:04:26,726 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/data/769d3a97d/af8c8bd8b98b47ff8628d4f82c15ced7/FLAG3328f081b [2018-11-23 00:04:26,735 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/data/769d3a97d/af8c8bd8b98b47ff8628d4f82c15ced7 [2018-11-23 00:04:26,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 00:04:26,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 00:04:26,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 00:04:26,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 00:04:26,741 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 00:04:26,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707ef55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26, skipping insertion in model container [2018-11-23 00:04:26,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 00:04:26,761 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 00:04:26,859 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:04:26,861 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 00:04:26,870 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:04:26,878 INFO L195 MainTranslator]: Completed translation [2018-11-23 00:04:26,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26 WrapperNode [2018-11-23 00:04:26,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 00:04:26,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 00:04:26,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 00:04:26,879 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 00:04:26,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 00:04:26,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 00:04:26,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 00:04:26,899 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 00:04:26,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... [2018-11-23 00:04:26,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 00:04:26,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 00:04:26,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 00:04:26,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 00:04:26,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:26,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 00:04:26,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 00:04:27,079 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 00:04:27,079 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 00:04:27,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:04:27 BoogieIcfgContainer [2018-11-23 00:04:27,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 00:04:27,080 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 00:04:27,080 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 00:04:27,082 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 00:04:27,083 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 00:04:27,083 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 12:04:26" (1/3) ... [2018-11-23 00:04:27,084 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b85a996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:04:27, skipping insertion in model container [2018-11-23 00:04:27,084 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 00:04:27,084 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:26" (2/3) ... [2018-11-23 00:04:27,084 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b85a996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:04:27, skipping insertion in model container [2018-11-23 00:04:27,084 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 00:04:27,084 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:04:27" (3/3) ... [2018-11-23 00:04:27,086 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c [2018-11-23 00:04:27,122 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 00:04:27,122 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 00:04:27,122 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 00:04:27,123 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 00:04:27,123 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 00:04:27,123 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 00:04:27,123 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 00:04:27,123 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 00:04:27,123 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 00:04:27,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 00:04:27,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 00:04:27,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:04:27,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:04:27,152 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 00:04:27,153 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 00:04:27,153 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 00:04:27,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 00:04:27,153 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 00:04:27,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:04:27,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:04:27,154 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 00:04:27,154 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 00:04:27,161 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 3#L17-2true [2018-11-23 00:04:27,161 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 6#L19-2true assume !(main_~j~0 > 0); 5#L19-3true main_~i~0 := main_~i~0 - 1; 3#L17-2true [2018-11-23 00:04:27,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,166 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 00:04:27,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:27,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:27,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:27,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,242 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-23 00:04:27,242 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:27,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:27,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:27,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-23 00:04:27,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:27,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:27,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:27,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:27,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 00:04:27,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 00:04:27,357 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:04:27,358 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:04:27,358 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:04:27,358 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:04:27,358 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:04:27,359 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,359 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:04:27,359 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:04:27,359 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 00:04:27,359 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:04:27,359 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:04:27,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,489 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:04:27,490 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,495 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:27,495 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:27,520 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:27,520 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,522 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:27,522 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:27,538 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:27,538 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,541 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:27,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:27,544 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:27,544 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=-4, ULTIMATE.start_main_~N~0=-4} Honda state: {ULTIMATE.start_main_~j~0=-4, ULTIMATE.start_main_~N~0=-4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,559 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:27,559 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,576 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:04:27,576 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:27,595 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:04:27,596 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:04:27,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:04:27,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:04:27,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:04:27,596 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:04:27,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,596 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:04:27,596 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:04:27,597 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 00:04:27,597 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:04:27,597 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:04:27,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,702 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:04:27,706 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:04:27,708 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:27,709 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:27,709 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:04:27,710 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:27,710 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:27,710 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:27,713 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:04:27,713 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:04:27,716 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:04:27,716 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:27,717 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:27,717 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:27,717 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:27,717 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:27,719 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:04:27,720 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:04:27,723 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:04:27,724 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:27,724 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:27,725 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:27,725 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:27,725 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:27,727 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:04:27,727 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:04:27,733 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:04:27,733 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:27,734 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:27,734 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:04:27,734 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:27,734 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:27,734 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:27,735 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:04:27,735 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:04:27,739 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:04:27,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:04:27,741 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:04:27,742 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:04:27,742 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:04:27,742 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:04:27,743 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-23 00:04:27,744 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:04:27,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:27,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:27,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:27,814 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 00:04:27,815 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-23 00:04:27,840 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2018-11-23 00:04:27,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 00:04:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 00:04:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-23 00:04:27,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-23 00:04:27,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:27,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-23 00:04:27,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:27,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-23 00:04:27,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:27,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2018-11-23 00:04:27,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 00:04:27,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-23 00:04:27,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 00:04:27,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 00:04:27,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-23 00:04:27,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:04:27,852 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 00:04:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-23 00:04:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-23 00:04:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 00:04:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2018-11-23 00:04:27,868 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-23 00:04:27,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 00:04:27,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 00:04:27,871 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. Second operand 4 states. [2018-11-23 00:04:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:04:27,910 INFO L93 Difference]: Finished difference Result 11 states and 15 transitions. [2018-11-23 00:04:27,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 00:04:27,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2018-11-23 00:04:27,912 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2018-11-23 00:04:27,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 15 transitions. [2018-11-23 00:04:27,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 00:04:27,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 00:04:27,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2018-11-23 00:04:27,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:04:27,913 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-11-23 00:04:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2018-11-23 00:04:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2018-11-23 00:04:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 00:04:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-23 00:04:27,914 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 00:04:27,914 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 00:04:27,914 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 00:04:27,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-23 00:04:27,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 00:04:27,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:04:27,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:04:27,915 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 00:04:27,916 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 00:04:27,916 INFO L794 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 91#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 93#L19-2 [2018-11-23 00:04:27,916 INFO L796 eck$LassoCheckResult]: Loop: 93#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 93#L19-2 [2018-11-23 00:04:27,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 00:04:27,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:27,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:27,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:27,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,922 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-23 00:04:27,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:27,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:27,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:27,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-23 00:04:27,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:27,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:27,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:27,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:27,940 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:04:27,940 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:04:27,940 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:04:27,940 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:04:27,940 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:04:27,941 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,941 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:04:27,941 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:04:27,941 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 00:04:27,941 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:04:27,941 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:04:27,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:27,982 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:04:27,982 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:27,988 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:27,988 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:28,011 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:28,011 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/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 [2018-11-23 00:04:28,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:28,017 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:28,032 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:28,032 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,035 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:28,035 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:04:28,051 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:28,068 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:04:28,069 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:04:28,069 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:04:28,069 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:04:28,069 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:04:28,069 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:04:28,070 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,070 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:04:28,070 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:04:28,070 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 00:04:28,070 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:04:28,070 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:04:28,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,105 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:04:28,105 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:04:28,105 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:28,106 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:28,106 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:28,106 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:28,106 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:28,107 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:04:28,107 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:04:28,111 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:04:28,111 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:28,112 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:28,112 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:04:28,112 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:28,112 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:28,112 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:28,113 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:04:28,113 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:04:28,116 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:04:28,119 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:04:28,119 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:04:28,120 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:04:28,120 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:04:28,120 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:04:28,120 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-23 00:04:28,120 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:04:28,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:28,157 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 [2018-11-23 00:04:28,157 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-23 00:04:28,163 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2018-11-23 00:04:28,163 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 [2018-11-23 00:04:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 00:04:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 00:04:28,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-23 00:04:28,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-23 00:04:28,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 00:04:28,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-11-23 00:04:28,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 00:04:28,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2018-11-23 00:04:28,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 00:04:28,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 00:04:28,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-11-23 00:04:28,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:04:28,166 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-23 00:04:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-11-23 00:04:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2018-11-23 00:04:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 00:04:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-23 00:04:28,167 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 00:04:28,167 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 00:04:28,167 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 00:04:28,168 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-23 00:04:28,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 00:04:28,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:04:28,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:04:28,168 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-23 00:04:28,168 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 00:04:28,169 INFO L794 eck$LassoCheckResult]: Stem: 147#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~j~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~N~0;main_~N~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_~N~0; 141#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 142#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 145#L19-2 assume !(main_~j~0 > 0); 146#L19-3 main_~i~0 := main_~i~0 - 1; 143#L17-2 assume !!(main_~i~0 > 0);main_~j~0 := main_~N~0; 144#L19-2 [2018-11-23 00:04:28,169 INFO L796 eck$LassoCheckResult]: Loop: 144#L19-2 assume !!(main_~j~0 > 0);main_~j~0 := main_~j~0 - 1; 144#L19-2 [2018-11-23 00:04:28,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 1 times [2018-11-23 00:04:28,169 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:28,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:28,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:28,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:28,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:28,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 00:04:28,218 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 00:04:28,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:28,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 00:04:28,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-23 00:04:28,277 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 00:04:28,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:28,278 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-23 00:04:28,278 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:04:28,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:04:28,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:28,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:04:28,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:04:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:04:28,295 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:04:28,295 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:04:28,295 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:04:28,295 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:04:28,295 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:04:28,295 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,295 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:04:28,296 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:04:28,296 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 00:04:28,296 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:04:28,296 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:04:28,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,330 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:04:28,330 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,345 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:28,345 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:28,360 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:28,360 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,368 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:28,368 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:28,389 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:04:28,389 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_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,392 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:04:28,392 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_929cade7-e2e8-42ce-80c5-ac2a41acf8b8/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 [2018-11-23 00:04:28,409 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:04:28,409 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:04:28,425 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:04:28,426 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:04:28,426 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:04:28,426 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:04:28,426 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:04:28,426 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:04:28,426 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:04:28,426 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:04:28,426 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:04:28,426 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-while2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 00:04:28,426 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:04:28,426 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:04:28,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:04:28,459 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:04:28,459 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:04:28,459 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:28,460 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:28,460 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:28,460 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:28,460 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:28,461 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:04:28,462 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:04:28,465 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:04:28,465 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:04:28,466 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:04:28,466 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:04:28,466 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:04:28,466 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:04:28,466 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:04:28,466 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:04:28,466 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:04:28,468 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:04:28,470 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:04:28,470 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:04:28,470 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:04:28,471 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:04:28,471 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:04:28,471 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-11-23 00:04:28,471 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:04:28,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:28,497 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 [2018-11-23 00:04:28,497 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 00:04:28,505 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 12 states and 16 transitions. Complement of second has 5 states. [2018-11-23 00:04:28,505 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 [2018-11-23 00:04:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 00:04:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 00:04:28,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 00:04:28,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,506 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:04:28,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:28,522 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 [2018-11-23 00:04:28,522 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 00:04:28,526 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 12 states and 16 transitions. Complement of second has 5 states. [2018-11-23 00:04:28,526 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 [2018-11-23 00:04:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 00:04:28,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 00:04:28,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 00:04:28,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,527 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:04:28,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:04:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:04:28,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:04:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:04:28,540 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 [2018-11-23 00:04:28,540 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 00:04:28,547 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2018-11-23 00:04:28,547 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 [2018-11-23 00:04:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 00:04:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-23 00:04:28,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 00:04:28,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-23 00:04:28,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 00:04:28,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:04:28,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-23 00:04:28,549 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 00:04:28,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-23 00:04:28,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 00:04:28,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 00:04:28,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 00:04:28,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 00:04:28,549 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:04:28,550 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:04:28,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 00:04:28,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-23 00:04:28,550 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-23 00:04:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 00:04:28,550 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-23 00:04:28,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 00:04:28,551 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-23 00:04:28,551 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 00:04:28,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 00:04:28,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 00:04:28,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 00:04:28,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 00:04:28,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 00:04:28,551 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:04:28,551 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:04:28,551 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:04:28,551 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 00:04:28,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 00:04:28,552 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 00:04:28,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 00:04:28,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 12:04:28 BoogieIcfgContainer [2018-11-23 00:04:28,557 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 00:04:28,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 00:04:28,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 00:04:28,557 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 00:04:28,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:04:27" (3/4) ... [2018-11-23 00:04:28,560 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 00:04:28,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 00:04:28,560 INFO L168 Benchmark]: Toolchain (without parser) took 1823.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 962.4 MB in the beginning and 897.0 MB in the end (delta: 65.4 MB). Peak memory consumption was 181.2 MB. Max. memory is 11.5 GB. [2018-11-23 00:04:28,561 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:04:28,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.92 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 00:04:28,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 00:04:28,562 INFO L168 Benchmark]: Boogie Preprocessor took 11.69 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:04:28,563 INFO L168 Benchmark]: RCFGBuilder took 168.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-23 00:04:28,563 INFO L168 Benchmark]: BuchiAutomizer took 1476.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 897.0 MB in the end (delta: 204.6 MB). Peak memory consumption was 204.6 MB. Max. memory is 11.5 GB. [2018-11-23 00:04:28,563 INFO L168 Benchmark]: Witness Printer took 2.90 ms. Allocated memory is still 1.1 GB. Free memory is still 897.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:04:28,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.92 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.69 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 168.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1476.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 897.0 MB in the end (delta: 204.6 MB). Peak memory consumption was 204.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.90 ms. Allocated memory is still 1.1 GB. Free memory is still 897.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function j and consists of 3 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 25 SDslu, 13 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...