./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.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-wise.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 4c761fb15c9d367876fc9f1553874e9680fa1668 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:57:13,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:13,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:13,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:13,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:13,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:13,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:13,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:13,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:13,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:13,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:13,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:13,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:13,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:13,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:13,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:13,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:13,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:13,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:13,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:13,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:13,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:13,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:13,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:13,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:13,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:13,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:13,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:13,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:13,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:13,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:13,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:13,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:13,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:13,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:13,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:13,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:13,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:13,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:13,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:13,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:13,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:14,007 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:14,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:14,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:14,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:14,009 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:14,009 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:14,010 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:14,010 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:14,010 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:14,010 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:14,011 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:14,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:14,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:14,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:14,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:14,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:14,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:14,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:14,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:14,013 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:14,013 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:14,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:14,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:14,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:14,014 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:14,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:14,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:14,015 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:14,017 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:14,017 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 -> 4c761fb15c9d367876fc9f1553874e9680fa1668 [2019-11-28 02:57:14,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:14,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:14,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:14,365 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:14,365 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:14,366 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-28 02:57:14,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b8ba235/c161438ecd0b4dba9f40587d85477d1d/FLAGb53049829 [2019-11-28 02:57:14,940 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:14,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-28 02:57:14,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b8ba235/c161438ecd0b4dba9f40587d85477d1d/FLAGb53049829 [2019-11-28 02:57:15,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b8ba235/c161438ecd0b4dba9f40587d85477d1d [2019-11-28 02:57:15,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:15,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:15,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:15,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:15,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:15,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e30af7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15, skipping insertion in model container [2019-11-28 02:57:15,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:15,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:15,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:15,618 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:15,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:15,657 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:15,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15 WrapperNode [2019-11-28 02:57:15,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:15,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:15,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:15,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:15,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:15,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:15,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:15,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:15,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2019-11-28 02:57:15,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:15,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:15,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:15,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:15,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (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 02:57:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:16,058 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:16,059 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:57:16,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:16 BoogieIcfgContainer [2019-11-28 02:57:16,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:16,061 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:16,061 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:16,065 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:16,066 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:16,067 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:15" (1/3) ... [2019-11-28 02:57:16,068 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8c48373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:16, skipping insertion in model container [2019-11-28 02:57:16,068 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:16,068 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (2/3) ... [2019-11-28 02:57:16,069 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8c48373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:16, skipping insertion in model container [2019-11-28 02:57:16,069 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:16,069 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:16" (3/3) ... [2019-11-28 02:57:16,071 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-11-28 02:57:16,123 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:16,123 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:16,123 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:16,124 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:16,124 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:16,124 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:16,124 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:16,124 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:16,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:16,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:16,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:16,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:16,186 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:16,189 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:16,189 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:16,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:16,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:16,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:16,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:16,191 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:16,193 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:16,211 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~x~0 >= 0 && main_~y~0 >= 0; 7#L19-2true [2019-11-28 02:57:16,212 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 9#L19true assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 7#L19-2true [2019-11-28 02:57:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,223 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-28 02:57:16,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:16,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52151977] [2019-11-28 02:57:16,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-11-28 02:57:16,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:16,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237303880] [2019-11-28 02:57:16,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,406 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:16,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-28 02:57:16,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:16,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664114805] [2019-11-28 02:57:16,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:16,426 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:16,499 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:16,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:16,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:16,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:16,500 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:16,501 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,501 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:16,501 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:16,501 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-11-28 02:57:16,502 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:16,502 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:16,523 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 02:57:16,538 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 02:57:16,551 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 02:57:16,643 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:16,644 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:16,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:16,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:16,665 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe 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 02:57:16,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:16,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:16,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:16,684 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 02:57:16,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:16,697 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) [2019-11-28 02:57:16,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:16,718 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,862 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:16,864 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:16,864 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:16,864 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:16,864 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:16,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:16,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:16,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:16,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:16,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-11-28 02:57:16,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:16,866 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:16,868 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 02:57:16,874 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 02:57:16,885 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 02:57:16,968 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:16,974 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 02:57:16,985 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 02:57:16,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:16,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:16,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:16,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:17,002 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:17,003 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 02:57:17,013 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 02:57:17,027 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 02:57:17,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:17,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:17,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:17,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:17,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:17,035 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,042 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,059 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 02:57:17,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:17,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:17,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:17,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:17,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:17,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:17,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:17,068 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:17,090 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:17,091 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:17,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:17,098 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:17,099 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-28 02:57:17,109 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:17,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:17,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:17,186 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:17,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:17,189 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 02:57:17,207 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 02:57:17,209 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-28 02:57:17,256 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-11-28 02:57:17,257 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 02:57:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-28 02:57:17,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 02:57:17,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:17,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:17,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:17,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:57:17,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:17,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-28 02:57:17,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:17,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-28 02:57:17,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 02:57:17,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:57:17,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-28 02:57:17,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:17,275 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:17,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-28 02:57:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-28 02:57:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 02:57:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-28 02:57:17,304 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:17,304 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:17,304 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:17,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-28 02:57:17,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:17,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:17,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:17,306 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 02:57:17,306 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:17,307 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 73#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 74#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 79#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 75#L19-2 [2019-11-28 02:57:17,307 INFO L796 eck$LassoCheckResult]: Loop: 75#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 76#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 75#L19-2 [2019-11-28 02:57:17,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:17,307 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-11-28 02:57:17,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:17,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668545783] [2019-11-28 02:57:17,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:17,321 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:17,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-11-28 02:57:17,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:17,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868857149] [2019-11-28 02:57:17,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:17,332 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-11-28 02:57:17,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:17,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910751432] [2019-11-28 02:57:17,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:17,408 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 02:57:17,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910751432] [2019-11-28 02:57:17,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:57:17,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 02:57:17,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412772706] [2019-11-28 02:57:17,448 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:17,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:17,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:17,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:17,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:17,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:17,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:17,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-11-28 02:57:17,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:17,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:17,452 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 02:57:17,456 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 02:57:17,466 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 02:57:17,516 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:17,516 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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:17,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:17,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:17,531 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:17,550 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2019-11-28 02:57:17,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:17,577 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,774 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:17,777 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:17,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:17,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:17,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:17,778 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:17,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:17,779 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:17,779 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-11-28 02:57:17,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:17,779 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:17,782 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 02:57:17,790 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 02:57:17,804 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 02:57:17,864 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:17,864 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:57:17,878 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 02:57:17,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:17,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:17,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:17,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:17,887 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:17,887 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,894 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:17,911 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 02:57:17,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:17,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:17,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:17,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:17,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:17,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:17,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:17,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,932 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:17,932 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:17,940 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:17,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:17,940 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:17,940 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:17,952 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:18,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:18,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:18,010 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:18,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:18,011 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 02:57:18,011 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 02:57:18,011 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 02:57:18,022 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-11-28 02:57:18,024 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 02:57:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 02:57:18,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:18,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:18,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:57:18,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:18,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 02:57:18,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:18,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-11-28 02:57:18,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-11-28 02:57:18,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 02:57:18,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:57:18,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-11-28 02:57:18,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:18,029 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-11-28 02:57:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 02:57:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:57:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-11-28 02:57:18,031 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-11-28 02:57:18,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:57:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:57:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:57:18,036 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 5 states. [2019-11-28 02:57:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:57:18,063 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-11-28 02:57:18,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:57:18,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-28 02:57:18,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2019-11-28 02:57:18,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 02:57:18,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:57:18,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-11-28 02:57:18,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:18,066 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 02:57:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-11-28 02:57:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2019-11-28 02:57:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:57:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-28 02:57:18,068 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-28 02:57:18,068 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-28 02:57:18,068 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:18,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-28 02:57:18,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:18,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:18,069 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:57:18,070 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:18,070 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 158#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-11-28 02:57:18,070 INFO L796 eck$LassoCheckResult]: Loop: 160#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 159#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-11-28 02:57:18,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,070 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-11-28 02:57:18,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298272606] [2019-11-28 02:57:18,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,079 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-11-28 02:57:18,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55931687] [2019-11-28 02:57:18,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,088 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,089 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2019-11-28 02:57:18,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343379753] [2019-11-28 02:57:18,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,116 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,150 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:18,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:18,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:18,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:18,151 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:18,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:18,151 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:18,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-11-28 02:57:18,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:18,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:18,154 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 02:57:18,157 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 02:57:18,163 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 02:57:18,210 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:18,210 INFO L404 LassoAnalysis]: Checking for nontermination... 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 02:57:18,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:18,223 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:18,228 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 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 02:57:18,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:18,238 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 02:57:18,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:18,258 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 02:57:18,546 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:18,549 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:18,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:18,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:18,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:18,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:18,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:18,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:18,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-11-28 02:57:18,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:18,550 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:18,552 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 02:57:18,566 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 02:57:18,569 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 02:57:18,613 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:18,613 INFO L489 LassoAnalysis]: Using template 'affine'. 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 02:57:18,624 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 02:57:18,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:18,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:18,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:18,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:18,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:18,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:18,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,635 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:18,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:18,639 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:18,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:18,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:18,646 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:18,646 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,649 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:18,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:18,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:18,683 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:18,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:18,708 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 02:57:18,708 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 02:57:18,709 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-28 02:57:18,727 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2019-11-28 02:57:18,728 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 02:57:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 02:57:18,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 02:57:18,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:18,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 02:57:18,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:18,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-28 02:57:18,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:18,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-28 02:57:18,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2019-11-28 02:57:18,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 02:57:18,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 02:57:18,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-28 02:57:18,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:18,733 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-28 02:57:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-28 02:57:18,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-28 02:57:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:57:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-28 02:57:18,737 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-28 02:57:18,737 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-28 02:57:18,737 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:18,738 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-11-28 02:57:18,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:18,739 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:18,739 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:18,740 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-28 02:57:18,740 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:18,740 INFO L794 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 212#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 213#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 214#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 215#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-11-28 02:57:18,740 INFO L796 eck$LassoCheckResult]: Loop: 216#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 217#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-11-28 02:57:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,741 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2019-11-28 02:57:18,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742189363] [2019-11-28 02:57:18,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,775 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2019-11-28 02:57:18,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632629850] [2019-11-28 02:57:18,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:18,796 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:18,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2019-11-28 02:57:18,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:18,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199170904] [2019-11-28 02:57:18,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:18,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199170904] [2019-11-28 02:57:18,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:57:18,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 02:57:18,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440382075] [2019-11-28 02:57:18,895 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:18,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:18,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:18,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:18,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:18,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:18,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:18,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:18,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-11-28 02:57:18,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:18,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:18,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:18,907 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 02:57:18,911 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 02:57:18,955 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:18,955 INFO L404 LassoAnalysis]: Checking for nontermination... 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 02:57:18,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:18,979 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 02:57:19,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:19,007 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 02:57:19,365 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:19,368 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:19,368 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:19,368 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:19,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:19,369 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:19,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:19,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:19,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-11-28 02:57:19,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:19,371 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:19,372 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 02:57:19,387 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 02:57:19,390 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 02:57:19,431 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:19,431 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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,442 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 02:57:19,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:19,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:19,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:19,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:19,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:19,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:19,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:19,449 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:19,457 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:19,457 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:19,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:19,476 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:19,477 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:19,477 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:19,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,528 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,547 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 02:57:19,548 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 02:57:19,548 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 02:57:19,558 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2019-11-28 02:57:19,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-11-28 02:57:19,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 02:57:19,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,561 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,604 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,626 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 02:57:19,626 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 02:57:19,627 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 02:57:19,632 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2019-11-28 02:57:19,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-11-28 02:57:19,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 02:57:19,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,637 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:19,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:19,667 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:19,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:19,683 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 02:57:19,683 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 02:57:19,683 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 02:57:19,700 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2019-11-28 02:57:19,701 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 02:57:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 02:57:19,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 02:57:19,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 02:57:19,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 02:57:19,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:19,706 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-28 02:57:19,707 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:19,707 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-28 02:57:19,707 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:19,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:19,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:19,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:19,709 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:19,709 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:19,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:57:19,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:57:19,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:57:19,712 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-28 02:57:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:57:19,712 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 02:57:19,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 02:57:19,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 02:57:19,713 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:19,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 02:57:19,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:19,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:19,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:19,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:19,714 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:19,714 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:19,715 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:19,715 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:57:19,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:19,715 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:19,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:57:19,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:19 BoogieIcfgContainer [2019-11-28 02:57:19,723 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:19,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:19,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:19,725 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:19,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:16" (3/4) ... [2019-11-28 02:57:19,729 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:19,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:19,733 INFO L168 Benchmark]: Toolchain (without parser) took 4412.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 955.0 MB in the beginning and 821.3 MB in the end (delta: 133.7 MB). Peak memory consumption was 275.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:19,733 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:19,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.21 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 942.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:19,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:19,742 INFO L168 Benchmark]: Boogie Preprocessor took 28.23 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 02:57:19,742 INFO L168 Benchmark]: RCFGBuilder took 262.55 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:19,745 INFO L168 Benchmark]: BuchiAutomizer took 3662.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 821.3 MB in the end (delta: 298.0 MB). Peak memory consumption was 298.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:19,750 INFO L168 Benchmark]: Witness Printer took 5.77 ms. Allocated memory is still 1.2 GB. Free memory is still 821.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:19,759 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.21 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 942.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 109.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.23 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 262.55 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3662.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 821.3 MB in the end (delta: 298.0 MB). Peak memory consumption was 298.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.77 ms. Allocated memory is still 1.2 GB. Free memory is still 821.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y + -1 * x and consists of 4 locations. One deterministic module has affine ranking function y + -1 * x and consists of 3 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 31 SDtfs, 29 SDslu, 3 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...