./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:09,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:09,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:09,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:09,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:09,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:09,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:09,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:09,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:09,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:09,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:09,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:09,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:09,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:09,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:09,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:09,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:09,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:09,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:09,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:09,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:09,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:09,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:09,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:09,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:09,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:09,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:09,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:09,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:09,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:09,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:09,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:09,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:09,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:09,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:09,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:09,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:09,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:09,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:09,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:09,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:09,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:09,217 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:09,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:09,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:09,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:09,222 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:09,223 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:09,223 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:09,223 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:09,223 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:09,224 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:09,225 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:09,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:09,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:09,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:09,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:09,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:09,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:09,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:09,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:09,228 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:09,228 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:09,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:09,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:09,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:09,230 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:09,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:09,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:09,231 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:09,232 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:09,232 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2019-11-28 02:57:09,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:09,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:09,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:09,550 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:09,550 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:09,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2019-11-28 02:57:09,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f0fe7ea/402edc885d0b420997a27f64225f5e99/FLAG291bb6375 [2019-11-28 02:57:10,040 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:10,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2019-11-28 02:57:10,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f0fe7ea/402edc885d0b420997a27f64225f5e99/FLAG291bb6375 [2019-11-28 02:57:10,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f0fe7ea/402edc885d0b420997a27f64225f5e99 [2019-11-28 02:57:10,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:10,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:10,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:10,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:10,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:10,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612b49be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10, skipping insertion in model container [2019-11-28 02:57:10,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:10,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:10,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:10,687 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:10,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:10,715 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:10,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10 WrapperNode [2019-11-28 02:57:10,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:10,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:10,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:10,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:10,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:10,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:10,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:10,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:10,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... [2019-11-28 02:57:10,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:10,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:10,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:10,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:10,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:11,076 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:11,077 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 02:57:11,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:11 BoogieIcfgContainer [2019-11-28 02:57:11,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:11,079 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:11,079 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:11,082 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:11,083 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:11,083 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:10" (1/3) ... [2019-11-28 02:57:11,085 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f5f79bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:11, skipping insertion in model container [2019-11-28 02:57:11,085 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:11,085 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:10" (2/3) ... [2019-11-28 02:57:11,086 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f5f79bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:11, skipping insertion in model container [2019-11-28 02:57:11,086 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:11,086 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:11" (3/3) ... [2019-11-28 02:57:11,088 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2019-11-28 02:57:11,135 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:11,136 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:11,136 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:11,136 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:11,136 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:11,136 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:11,137 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:11,137 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:11,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 02:57:11,168 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:11,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:11,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:11,175 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:11,176 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:11,176 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:11,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 02:57:11,177 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:11,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:11,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:11,178 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:11,178 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:11,185 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 4#L21true assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 5#L23-2true [2019-11-28 02:57:11,185 INFO L796 eck$LassoCheckResult]: Loop: 5#L23-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 8#L25-2true assume !(main_~j~0 < main_~m~0); 7#L25-3true main_~i~0 := 1 + main_~i~0; 5#L23-2true [2019-11-28 02:57:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-28 02:57:11,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:11,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603676366] [2019-11-28 02:57:11,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:11,313 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:11,315 INFO L82 PathProgramCache]: Analyzing trace with hash 42943, now seen corresponding path program 1 times [2019-11-28 02:57:11,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:11,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024474950] [2019-11-28 02:57:11,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:11,331 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash 29684988, now seen corresponding path program 1 times [2019-11-28 02:57:11,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:11,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284305056] [2019-11-28 02:57:11,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:11,366 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:11,455 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:11,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:11,470 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:11,471 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:11,471 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:11,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:11,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:11,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:11,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration1_Loop [2019-11-28 02:57:11,476 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:11,476 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:11,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:11,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:11,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:11,726 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:11,738 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:11,738 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:11,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:11,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:11,760 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:11,761 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:11,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:11,774 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:11,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:11,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:11,897 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:11,899 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:11,899 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:11,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:11,900 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:11,900 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:11,900 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:11,900 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:11,900 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:11,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration1_Loop [2019-11-28 02:57:11,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:11,901 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:11,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:11,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,002 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:12,007 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:12,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:12,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:12,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:12,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:12,024 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:12,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,032 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,057 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:12,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:12,060 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:12,060 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:12,069 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:12,071 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:12,079 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,097 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:12,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:12,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:12,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:12,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:12,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:12,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:12,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:12,118 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:12,119 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:12,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:12,137 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:12,139 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 02:57:12,149 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:12,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:12,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:12,223 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:12,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:12,262 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:12,264 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-11-28 02:57:12,346 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 42 states and 62 transitions. Complement of second has 8 states. [2019-11-28 02:57:12,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2019-11-28 02:57:12,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-28 02:57:12,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:12,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-28 02:57:12,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:12,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-28 02:57:12,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:12,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2019-11-28 02:57:12,360 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:57:12,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 14 states and 21 transitions. [2019-11-28 02:57:12,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 02:57:12,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 02:57:12,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2019-11-28 02:57:12,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:12,366 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2019-11-28 02:57:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2019-11-28 02:57:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 02:57:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 02:57:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2019-11-28 02:57:12,389 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-11-28 02:57:12,390 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-11-28 02:57:12,390 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:12,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2019-11-28 02:57:12,391 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:57:12,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:12,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:12,391 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 02:57:12,392 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:57:12,392 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 98#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 99#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 104#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 96#L28-2 [2019-11-28 02:57:12,392 INFO L796 eck$LassoCheckResult]: Loop: 96#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 96#L28-2 [2019-11-28 02:57:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2019-11-28 02:57:12,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:12,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098509622] [2019-11-28 02:57:12,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:12,414 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2019-11-28 02:57:12,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:12,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723417651] [2019-11-28 02:57:12,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:12,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash 29685042, now seen corresponding path program 1 times [2019-11-28 02:57:12,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:12,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412714632] [2019-11-28 02:57:12,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:12,445 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:12,465 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:12,466 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:12,466 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:12,466 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:12,466 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:12,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,467 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:12,467 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:12,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration2_Loop [2019-11-28 02:57:12,467 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:12,467 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:12,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:12,558 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:12,567 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:12,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:12,592 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:12,600 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:12,619 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 02:57:12,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:12,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:12,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:12,775 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:12,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:12,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:12,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:12,776 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:12,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:12,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:12,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration2_Loop [2019-11-28 02:57:12,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:12,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:12,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:12,841 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:12,841 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:12,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:12,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:12,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:12,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:12,863 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:12,865 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,871 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:12,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:12,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:12,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:12,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:12,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:12,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:12,908 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:12,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:12,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:12,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:12,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:12,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:12,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:12,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:12,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:12,971 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:12,971 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:12,980 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:12,980 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:12,980 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:12,980 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2019-11-28 02:57:12,984 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:13,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:13,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:13,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:13,024 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:13,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:13,025 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 [2019-11-28 02:57:13,025 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10 Second operand 2 states. [2019-11-28 02:57:13,043 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 27 states and 43 transitions. Complement of second has 6 states. [2019-11-28 02:57:13,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2019-11-28 02:57:13,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-28 02:57:13,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:13,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-28 02:57:13,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:13,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:13,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:13,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 43 transitions. [2019-11-28 02:57:13,049 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 02:57:13,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 18 states and 27 transitions. [2019-11-28 02:57:13,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-28 02:57:13,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-28 02:57:13,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 27 transitions. [2019-11-28 02:57:13,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:13,051 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-28 02:57:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 27 transitions. [2019-11-28 02:57:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 02:57:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:57:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2019-11-28 02:57:13,054 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-28 02:57:13,055 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-11-28 02:57:13,055 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:13,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2019-11-28 02:57:13,056 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-28 02:57:13,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:13,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:13,057 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:57:13,057 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:13,058 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 181#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 182#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 180#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 188#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 175#L28-3 main_~i~0 := main_~k~0; 186#L25-2 [2019-11-28 02:57:13,058 INFO L796 eck$LassoCheckResult]: Loop: 186#L25-2 assume !(main_~j~0 < main_~m~0); 187#L25-3 main_~i~0 := 1 + main_~i~0; 189#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 186#L25-2 [2019-11-28 02:57:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:13,058 INFO L82 PathProgramCache]: Analyzing trace with hash 920236275, now seen corresponding path program 1 times [2019-11-28 02:57:13,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:13,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004256936] [2019-11-28 02:57:13,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:13,077 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash 50233, now seen corresponding path program 2 times [2019-11-28 02:57:13,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:13,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940864382] [2019-11-28 02:57:13,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:13,088 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:13,089 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 1 times [2019-11-28 02:57:13,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:13,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418568312] [2019-11-28 02:57:13,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:13,111 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:13,151 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:13,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:13,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:13,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:13,152 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:13,152 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:13,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:13,153 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration3_Loop [2019-11-28 02:57:13,153 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:13,153 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:13,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,236 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:13,237 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:13,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:13,243 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,249 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:13,249 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:13,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:13,265 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,272 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:13,272 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:13,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:13,288 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:13,295 INFO L440 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:13,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:13,321 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:13,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:13,343 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,885 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:13,888 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:13,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:13,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:13,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:13,889 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:13,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:13,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:13,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration3_Loop [2019-11-28 02:57:13,890 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:13,890 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:13,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:13,976 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:13,976 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:13,990 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:13,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:13,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:13,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:13,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:13,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:13,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:13,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:13,996 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:14,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:14,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:14,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:14,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:14,012 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:14,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,024 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:14,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:14,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:14,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:14,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:14,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:14,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:14,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,038 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:14,044 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:14,044 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,049 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:14,049 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:14,049 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:14,049 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,052 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,083 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:14,119 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:14,119 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13 Second operand 4 states. [2019-11-28 02:57:14,147 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 31 states and 51 transitions. Complement of second has 8 states. [2019-11-28 02:57:14,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2019-11-28 02:57:14,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 02:57:14,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 02:57:14,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-28 02:57:14,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 51 transitions. [2019-11-28 02:57:14,152 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:57:14,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 34 transitions. [2019-11-28 02:57:14,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-28 02:57:14,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-28 02:57:14,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 34 transitions. [2019-11-28 02:57:14,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:14,154 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-11-28 02:57:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 34 transitions. [2019-11-28 02:57:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-28 02:57:14,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 02:57:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2019-11-28 02:57:14,157 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-28 02:57:14,157 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 31 transitions. [2019-11-28 02:57:14,157 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:14,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 31 transitions. [2019-11-28 02:57:14,158 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:57:14,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:14,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:14,158 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-28 02:57:14,159 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 02:57:14,159 INFO L794 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 277#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 278#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 288#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 287#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 276#L28-3 main_~i~0 := main_~k~0; 286#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 273#L28-2 [2019-11-28 02:57:14,159 INFO L796 eck$LassoCheckResult]: Loop: 273#L28-2 assume !!(main_~k~0 < main_~N~0 - 1);main_~k~0 := 1 + main_~k~0; 273#L28-2 [2019-11-28 02:57:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 2 times [2019-11-28 02:57:14,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:14,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386866521] [2019-11-28 02:57:14,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,189 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,190 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 2 times [2019-11-28 02:57:14,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:14,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286192438] [2019-11-28 02:57:14,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:14,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash -416201988, now seen corresponding path program 1 times [2019-11-28 02:57:14,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:14,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95622934] [2019-11-28 02:57:14,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:14,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95622934] [2019-11-28 02:57:14,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:57:14,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:57:14,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864635025] [2019-11-28 02:57:14,279 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:14,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:14,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:14,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:14,301 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:14,301 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,301 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:14,301 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:14,301 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration4_Loop [2019-11-28 02:57:14,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:14,302 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:14,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,374 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:14,374 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:14,379 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:14,390 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,501 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:14,503 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:14,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:14,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:14,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:14,503 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:14,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:14,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:14,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration4_Loop [2019-11-28 02:57:14,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:14,504 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:14,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,561 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:14,561 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:14,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:14,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:14,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:14,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:14,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:14,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:14,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:14,575 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:14,578 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:14,578 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,581 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:14,582 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:14,582 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:14,582 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~N~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~N~0 Supporting invariants [] [2019-11-28 02:57:14,584 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:14,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,614 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:14,615 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 [2019-11-28 02:57:14,615 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2019-11-28 02:57:14,631 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2019-11-28 02:57:14,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-28 02:57:14,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:57:14,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,633 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,660 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:14,661 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 [2019-11-28 02:57:14,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2019-11-28 02:57:14,675 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 25 states and 38 transitions. Complement of second has 5 states. [2019-11-28 02:57:14,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-28 02:57:14,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:57:14,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,682 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:14,706 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:14,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:14,707 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 [2019-11-28 02:57:14,707 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16 Second operand 2 states. [2019-11-28 02:57:14,725 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 31 transitions. cyclomatic complexity: 16. Second operand 2 states. Result 36 states and 60 transitions. Complement of second has 5 states. [2019-11-28 02:57:14,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 02:57:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2019-11-28 02:57:14,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-28 02:57:14,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 8 letters. Loop has 1 letters. [2019-11-28 02:57:14,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 02:57:14,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:14,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 60 transitions. [2019-11-28 02:57:14,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:14,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 22 states and 33 transitions. [2019-11-28 02:57:14,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 02:57:14,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-28 02:57:14,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2019-11-28 02:57:14,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:14,732 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-11-28 02:57:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2019-11-28 02:57:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-11-28 02:57:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 02:57:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2019-11-28 02:57:14,735 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2019-11-28 02:57:14,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:57:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:57:14,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:57:14,739 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand 4 states. [2019-11-28 02:57:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:57:14,782 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2019-11-28 02:57:14,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:57:14,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2019-11-28 02:57:14,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:14,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 26 transitions. [2019-11-28 02:57:14,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-28 02:57:14,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 02:57:14,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2019-11-28 02:57:14,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:14,785 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2019-11-28 02:57:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2019-11-28 02:57:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-28 02:57:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-28 02:57:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2019-11-28 02:57:14,787 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2019-11-28 02:57:14,787 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2019-11-28 02:57:14,787 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:57:14,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2019-11-28 02:57:14,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:14,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:14,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:14,789 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-11-28 02:57:14,789 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:14,789 INFO L794 eck$LassoCheckResult]: Stem: 535#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 533#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 534#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 540#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 539#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 528#L28-3 main_~i~0 := main_~k~0; 538#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2019-11-28 02:57:14,789 INFO L796 eck$LassoCheckResult]: Loop: 525#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 526#L28-3 main_~i~0 := main_~k~0; 530#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 525#L28-2 [2019-11-28 02:57:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446525, now seen corresponding path program 3 times [2019-11-28 02:57:14,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:14,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172695257] [2019-11-28 02:57:14,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,805 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,806 INFO L82 PathProgramCache]: Analyzing trace with hash 58767, now seen corresponding path program 1 times [2019-11-28 02:57:14,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:14,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105011604] [2019-11-28 02:57:14,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,813 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:14,814 INFO L82 PathProgramCache]: Analyzing trace with hash -538152755, now seen corresponding path program 4 times [2019-11-28 02:57:14,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:14,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64462008] [2019-11-28 02:57:14,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:14,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:14,870 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:14,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:14,870 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:14,870 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:14,870 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:14,870 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,870 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:14,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:14,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration5_Loop [2019-11-28 02:57:14,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:14,871 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:14,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:14,975 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:14,976 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:14,983 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:14,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:14,992 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=-1, ULTIMATE.start_main_~i~0=-1, ULTIMATE.start_main_~N~0=0} Honda state: {ULTIMATE.start_main_~k~0=-1, ULTIMATE.start_main_~i~0=-1, ULTIMATE.start_main_~N~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:14,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:14,999 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:15,004 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:15,011 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:15,018 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:15,029 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:15,046 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,226 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:15,228 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:15,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:15,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:15,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:15,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:15,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:15,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:15,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration5_Loop [2019-11-28 02:57:15,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:15,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:15,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,304 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:15,305 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:15,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:15,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:15,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:15,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:15,316 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:15,316 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:15,321 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,334 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:15,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:15,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:15,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:15,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:15,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:15,339 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,344 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,351 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:15,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:15,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:15,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:15,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:15,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:15,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:15,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,359 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:15,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:15,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:15,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:15,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:15,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:15,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:15,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,375 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:15,379 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:15,379 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,384 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:15,384 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:15,384 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:15,384 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-28 02:57:15,386 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:15,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:15,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:15,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:15,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:15,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:15,424 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 [2019-11-28 02:57:15,424 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand 3 states. [2019-11-28 02:57:15,437 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 5 states. [2019-11-28 02:57:15,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2019-11-28 02:57:15,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-28 02:57:15,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:15,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-28 02:57:15,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:15,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-28 02:57:15,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:15,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2019-11-28 02:57:15,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:15,442 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 33 states and 44 transitions. [2019-11-28 02:57:15,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 02:57:15,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-28 02:57:15,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 44 transitions. [2019-11-28 02:57:15,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:15,443 INFO L688 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2019-11-28 02:57:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 44 transitions. [2019-11-28 02:57:15,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2019-11-28 02:57:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 02:57:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 02:57:15,446 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 02:57:15,446 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 02:57:15,447 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 02:57:15,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 35 transitions. [2019-11-28 02:57:15,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:15,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:15,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:15,449 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-28 02:57:15,449 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:15,449 INFO L794 eck$LassoCheckResult]: Stem: 640#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 635#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 636#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 637#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 651#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 647#L28-3 main_~i~0 := main_~k~0; 648#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 649#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 650#L28-3 main_~i~0 := main_~k~0; 655#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2019-11-28 02:57:15,449 INFO L796 eck$LassoCheckResult]: Loop: 641#L25-3 main_~i~0 := 1 + main_~i~0; 642#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 653#L25-2 assume !(main_~j~0 < main_~m~0); 641#L25-3 [2019-11-28 02:57:15,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:15,450 INFO L82 PathProgramCache]: Analyzing trace with hash -538152757, now seen corresponding path program 1 times [2019-11-28 02:57:15,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:15,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41242848] [2019-11-28 02:57:15,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:15,466 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash 67693, now seen corresponding path program 3 times [2019-11-28 02:57:15,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:15,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980009854] [2019-11-28 02:57:15,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:15,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:15,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:15,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1004170083, now seen corresponding path program 2 times [2019-11-28 02:57:15,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:15,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951024419] [2019-11-28 02:57:15,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:15,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951024419] [2019-11-28 02:57:15,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884282413] [2019-11-28 02:57:15,520 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:57:15,546 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:57:15,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:57:15,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:15,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-28 02:57:15,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:57:15,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-11-28 02:57:15,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210065976] [2019-11-28 02:57:15,600 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:15,601 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:15,601 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:15,601 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:15,601 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:15,601 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,601 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:15,602 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:15,602 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration6_Loop [2019-11-28 02:57:15,602 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:15,602 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:15,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:15,688 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:15,688 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:15,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:15,696 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:15,696 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:15,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:15,707 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:15,707 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:15,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:15,713 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:15,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:15,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:16,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:16,100 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:16,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:16,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:16,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:16,101 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:16,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:16,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:16,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration6_Loop [2019-11-28 02:57:16,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:16,102 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:16,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,170 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:16,170 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:16,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:16,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:16,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:16,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:16,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:16,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:16,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:16,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:16,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:16,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:16,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:16,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:16,192 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:16,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:16,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:16,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:16,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:16,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:16,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:16,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:16,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:16,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:16,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:16,217 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:16,217 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:16,222 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:16,222 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:16,222 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:16,222 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 02:57:16,224 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:16,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:16,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:16,304 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:16,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:16,326 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:16,326 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-28 02:57:16,361 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 65 states and 90 transitions. Complement of second has 7 states. [2019-11-28 02:57:16,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:16,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:57:16,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-28 02:57:16,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:16,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 3 letters. [2019-11-28 02:57:16,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:16,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-28 02:57:16,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:16,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 90 transitions. [2019-11-28 02:57:16,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:16,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 50 states and 68 transitions. [2019-11-28 02:57:16,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-28 02:57:16,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-28 02:57:16,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 68 transitions. [2019-11-28 02:57:16,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:16,369 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 68 transitions. [2019-11-28 02:57:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 68 transitions. [2019-11-28 02:57:16,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2019-11-28 02:57:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 02:57:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2019-11-28 02:57:16,372 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 49 transitions. [2019-11-28 02:57:16,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:57:16,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:57:16,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:57:16,375 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 8 states. [2019-11-28 02:57:16,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:57:16,480 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2019-11-28 02:57:16,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:57:16,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 62 transitions. [2019-11-28 02:57:16,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2019-11-28 02:57:16,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 47 states and 62 transitions. [2019-11-28 02:57:16,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-28 02:57:16,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-28 02:57:16,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 62 transitions. [2019-11-28 02:57:16,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:16,485 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 62 transitions. [2019-11-28 02:57:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 62 transitions. [2019-11-28 02:57:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 23. [2019-11-28 02:57:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 02:57:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2019-11-28 02:57:16,488 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-11-28 02:57:16,488 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-11-28 02:57:16,488 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 02:57:16,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2019-11-28 02:57:16,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-28 02:57:16,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:16,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:16,490 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:16,490 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:57:16,490 INFO L794 eck$LassoCheckResult]: Stem: 927#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 925#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 926#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 935#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 937#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 919#L28-3 main_~i~0 := main_~k~0; 938#L25-2 assume !(main_~j~0 < main_~m~0); 928#L25-3 [2019-11-28 02:57:16,490 INFO L796 eck$LassoCheckResult]: Loop: 928#L25-3 main_~i~0 := 1 + main_~i~0; 920#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 921#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 916#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 917#L28-3 main_~i~0 := main_~k~0; 933#L25-2 assume !(main_~j~0 < main_~m~0); 928#L25-3 [2019-11-28 02:57:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1537446527, now seen corresponding path program 2 times [2019-11-28 02:57:16,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:16,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321045046] [2019-11-28 02:57:16,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,504 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2016730719, now seen corresponding path program 1 times [2019-11-28 02:57:16,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:16,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733923173] [2019-11-28 02:57:16,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,514 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,515 INFO L82 PathProgramCache]: Analyzing trace with hash -504812577, now seen corresponding path program 3 times [2019-11-28 02:57:16,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:16,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784132749] [2019-11-28 02:57:16,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,542 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:16,592 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:16,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:16,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:16,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:16,593 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:16,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,593 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:16,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:16,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration7_Loop [2019-11-28 02:57:16,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:16,594 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:16,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:16,695 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:16,695 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:16,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:16,701 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,706 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:16,706 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~j~0=1, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:16,712 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:16,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:28,739 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-28 02:57:28,742 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:28,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:28,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:28,742 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:28,742 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:28,742 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:28,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:28,743 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:28,743 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration7_Loop [2019-11-28 02:57:28,743 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:28,743 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:28,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:28,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:28,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:28,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:28,853 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:28,853 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:28,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:28,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:28,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:28,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:28,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:28,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:28,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:28,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:28,863 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:28,866 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:28,866 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:28,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:28,871 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:28,871 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:28,871 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 02:57:28,873 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:28,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:28,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:28,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:28,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:28,963 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-28 02:57:28,964 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2019-11-28 02:57:29,002 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 49 states and 69 transitions. Complement of second has 7 states. [2019-11-28 02:57:29,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 02:57:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:57:29,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-28 02:57:29,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,004 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:29,082 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-28 02:57:29,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 6 states. [2019-11-28 02:57:29,186 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 6 states. Result 56 states and 79 transitions. Complement of second has 10 states. [2019-11-28 02:57:29,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 02:57:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2019-11-28 02:57:29,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-28 02:57:29,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2019-11-28 02:57:29,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 7 letters. Loop has 12 letters. [2019-11-28 02:57:29,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 79 transitions. [2019-11-28 02:57:29,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:29,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 43 states and 60 transitions. [2019-11-28 02:57:29,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-28 02:57:29,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-28 02:57:29,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 60 transitions. [2019-11-28 02:57:29,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:29,192 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 60 transitions. [2019-11-28 02:57:29,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 60 transitions. [2019-11-28 02:57:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2019-11-28 02:57:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 02:57:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2019-11-28 02:57:29,196 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2019-11-28 02:57:29,196 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2019-11-28 02:57:29,196 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 02:57:29,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 52 transitions. [2019-11-28 02:57:29,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:29,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:29,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:29,198 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:29,198 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:29,198 INFO L794 eck$LassoCheckResult]: Stem: 1178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~j~0, main_~k~0, main_~m~0, main_~n~0, main_~N~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~m~0;havoc main_~n~0;havoc main_~N~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~k~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~N~0 := main_#t~nondet5;havoc main_#t~nondet5; 1172#L21 assume (0 <= main_~n~0 && 0 <= main_~m~0) && 0 <= main_~N~0;main_~i~0 := 0; 1173#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1192#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1189#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1186#L28-3 main_~i~0 := main_~k~0; 1185#L25-2 assume !(main_~j~0 < main_~m~0); 1179#L25-3 main_~i~0 := 1 + main_~i~0; 1174#L23-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1175#L25-2 [2019-11-28 02:57:29,199 INFO L796 eck$LassoCheckResult]: Loop: 1175#L25-2 assume !!(main_~j~0 < main_~m~0);main_~j~0 := 1 + main_~j~0;main_~k~0 := main_~i~0; 1168#L28-2 assume !(main_~k~0 < main_~N~0 - 1); 1169#L28-3 main_~i~0 := main_~k~0; 1175#L25-2 [2019-11-28 02:57:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash -17361401, now seen corresponding path program 4 times [2019-11-28 02:57:29,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:29,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740412522] [2019-11-28 02:57:29,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:29,226 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,227 INFO L82 PathProgramCache]: Analyzing trace with hash 51867, now seen corresponding path program 2 times [2019-11-28 02:57:29,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:29,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741086626] [2019-11-28 02:57:29,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:29,241 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:29,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1817399595, now seen corresponding path program 5 times [2019-11-28 02:57:29,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:29,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129348153] [2019-11-28 02:57:29,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:29,261 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:29,283 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:29,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:29,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:29,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:29,284 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:29,284 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,284 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:29,284 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:29,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration8_Loop [2019-11-28 02:57:29,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:29,285 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:29,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,375 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:29,376 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:29,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:29,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:29,385 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:29,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:29,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:29,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:29,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:29,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:29,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=0, ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~N~0=-7} Honda state: {ULTIMATE.start_main_~k~0=0, ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~N~0=-7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:29,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:29,417 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 02:57:29,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:29,615 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:29,616 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:29,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:29,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:29,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:29,617 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:29,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,617 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:29,617 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:29,617 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c_Iteration8_Loop [2019-11-28 02:57:29,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:29,617 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:29,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:29,698 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:29,698 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:29,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:29,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:29,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:29,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:29,709 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:29,710 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:29,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:29,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:29,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:29,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:29,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:29,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:29,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:29,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:29,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:29,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:29,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:29,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:29,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:29,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:29,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:29,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:29,737 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:29,740 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:29,740 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:29,745 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:29,745 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:29,745 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:29,745 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-28 02:57:29,747 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:29,797 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:29,798 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2019-11-28 02:57:29,807 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 55 states and 81 transitions. Complement of second has 5 states. [2019-11-28 02:57:29,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-11-28 02:57:29,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 02:57:29,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,810 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:29,848 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:29,848 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2019-11-28 02:57:29,868 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 51 states and 75 transitions. Complement of second has 7 states. [2019-11-28 02:57:29,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-28 02:57:29,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 02:57:29,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,871 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:29,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:29,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:29,908 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:29,908 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26 Second operand 3 states. [2019-11-28 02:57:29,918 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 52 transitions. cyclomatic complexity: 26. Second operand 3 states. Result 69 states and 104 transitions. Complement of second has 4 states. [2019-11-28 02:57:29,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2019-11-28 02:57:29,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 02:57:29,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 02:57:29,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 02:57:29,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:29,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 104 transitions. [2019-11-28 02:57:29,922 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:29,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 0 states and 0 transitions. [2019-11-28 02:57:29,923 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:29,923 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:29,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:29,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:29,923 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:29,923 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:29,923 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:29,923 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-28 02:57:29,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:29,923 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:29,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:57:29,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:29 BoogieIcfgContainer [2019-11-28 02:57:29,931 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:29,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:29,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:29,932 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:29,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:11" (3/4) ... [2019-11-28 02:57:29,936 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:29,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:29,938 INFO L168 Benchmark]: Toolchain (without parser) took 19495.70 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 287.8 MB). Free memory was 960.4 MB in the beginning and 1.2 GB in the end (delta: -247.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:29,939 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:29,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:29,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:29,940 INFO L168 Benchmark]: Boogie Preprocessor took 21.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:29,941 INFO L168 Benchmark]: RCFGBuilder took 251.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:29,942 INFO L168 Benchmark]: BuchiAutomizer took 18852.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 152.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -100.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:29,942 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:29,945 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.26 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 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 88.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 251.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 18852.05 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 152.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -100.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.63 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (2 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * k + N and consists of 4 locations. One deterministic module has affine ranking function -1 * i + n and consists of 5 locations. One deterministic module has affine ranking function m + -1 * j and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function n + -1 * i and consists of 6 locations. One nondeterministic module has affine ranking function -1 * k + N and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.8s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 17.3s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 61 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 167 SDtfs, 164 SDslu, 80 SDs, 0 SdLazy, 161 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax169 hnf97 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 14.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...