./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c 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/CookSeeZuleger-TACAS2013-Fig1.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 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:29:53,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:29:53,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:29:53,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:29:53,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:29:53,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:29:53,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:29:53,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:29:53,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:29:53,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:29:53,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:29:53,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:29:53,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:29:53,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:29:53,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:29:53,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:29:53,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:29:53,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:29:53,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:29:53,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:29:53,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:29:53,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:29:53,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:29:53,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:29:53,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:29:53,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:29:53,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:29:53,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:29:53,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:29:53,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:29:53,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:29:53,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:29:53,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:29:53,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:29:53,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:29:53,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:29:53,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:29:53,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:29:53,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:29:53,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:29:53,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:29:53,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:29:53,187 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:29:53,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:29:53,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:29:53,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:29:53,193 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:29:53,193 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:29:53,194 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:29:53,194 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:29:53,194 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:29:53,194 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:29:53,196 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:29:53,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:29:53,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:29:53,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:29:53,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:29:53,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:29:53,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:29:53,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:29:53,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:29:53,199 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:29:53,199 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:29:53,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:29:53,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:29:53,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:29:53,200 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:29:53,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:29:53,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:29:53,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:29:53,201 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:29:53,202 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:29:53,203 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 -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 [2019-11-28 20:29:53,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:29:53,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:29:53,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:29:53,567 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:29:53,568 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:29:53,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2019-11-28 20:29:53,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3a55572/be6b0afc98fe45918e22d97d00180351/FLAG89843526a [2019-11-28 20:29:54,040 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:29:54,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1.c [2019-11-28 20:29:54,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3a55572/be6b0afc98fe45918e22d97d00180351/FLAG89843526a [2019-11-28 20:29:54,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3a55572/be6b0afc98fe45918e22d97d00180351 [2019-11-28 20:29:54,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:29:54,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:29:54,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:29:54,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:29:54,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:29:54,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d122c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54, skipping insertion in model container [2019-11-28 20:29:54,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:29:54,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:29:54,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:29:54,633 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:29:54,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:29:54,670 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:29:54,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54 WrapperNode [2019-11-28 20:29:54,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:29:54,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:29:54,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:29:54,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:29:54,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:29:54,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:29:54,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:29:54,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:29:54,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (1/1) ... [2019-11-28 20:29:54,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:29:54,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:29:54,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:29:54,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:29:54,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (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 20:29:54,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:29:54,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:29:54,986 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:29:54,986 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:29:54,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:29:54 BoogieIcfgContainer [2019-11-28 20:29:54,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:29:54,988 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:29:54,988 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:29:54,991 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:29:54,992 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:29:54,992 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:29:54" (1/3) ... [2019-11-28 20:29:54,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58eb0e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:29:54, skipping insertion in model container [2019-11-28 20:29:54,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:29:54,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:29:54" (2/3) ... [2019-11-28 20:29:54,994 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58eb0e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:29:54, skipping insertion in model container [2019-11-28 20:29:54,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:29:54,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:29:54" (3/3) ... [2019-11-28 20:29:54,996 INFO L371 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1.c [2019-11-28 20:29:55,042 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:29:55,042 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:29:55,043 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:29:55,043 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:29:55,043 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:29:55,043 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:29:55,044 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:29:55,044 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:29:55,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-28 20:29:55,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:55,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:55,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:55,089 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:29:55,089 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:55,090 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:29:55,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-28 20:29:55,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:55,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:55,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:55,092 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:29:55,092 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:55,099 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2019-11-28 20:29:55,099 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L19true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 6#L19-2true [2019-11-28 20:29:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:29:55,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:55,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015387914] [2019-11-28 20:29:55,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:55,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-28 20:29:55,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:55,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910693740] [2019-11-28 20:29:55,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:55,245 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-28 20:29:55,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:55,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708468795] [2019-11-28 20:29:55,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:55,266 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:55,368 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:55,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:55,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:55,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:55,369 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:55,370 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:55,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:55,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:55,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2019-11-28 20:29:55,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:55,376 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:55,432 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 20:29:55,477 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 20:29:55,494 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 20:29:55,546 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 20:29:55,562 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 20:29:55,688 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:55,689 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:55,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:55,700 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:55,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:55,713 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:55,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:55,728 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:55,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:55,736 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) [2019-11-28 20:29:55,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:55,750 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:55,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:55,768 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 20:29:55,779 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:55,781 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:55,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:55,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:55,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:55,782 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:55,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:55,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:55,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:55,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration1_Loop [2019-11-28 20:29:55,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:55,783 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:55,786 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 20:29:55,792 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 20:29:55,797 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 20:29:55,809 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 20:29:55,816 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 20:29:55,889 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:55,895 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 20:29:55,910 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 20:29:55,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:55,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:55,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:55,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:55,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:55,921 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 20:29:55,929 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 20:29:55,947 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 20:29:55,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:55,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:55,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:55,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:55,954 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:55,954 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 20:29:55,962 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:55,972 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 20:29:55,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:55,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:55,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:55,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:55,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:55,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:55,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:55,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:55,998 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:29:55,998 INFO L444 ModelExtractionUtils]: 0 out of 3 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) [2019-11-28 20:29:56,009 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:56,010 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:56,010 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:56,011 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-28 20:29:56,020 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:56,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:56,083 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:56,096 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:56,097 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:56,113 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 20:29:56,131 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 20:29:56,132 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-28 20:29:56,189 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2019-11-28 20:29:56,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:29:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-28 20:29:56,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 20:29:56,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:56,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:29:56,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:56,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 20:29:56,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:56,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-28 20:29:56,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:56,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-28 20:29:56,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-28 20:29:56,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 20:29:56,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-28 20:29:56,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:29:56,209 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:29:56,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-28 20:29:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 20:29:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 20:29:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-28 20:29:56,239 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:29:56,239 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:29:56,240 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:29:56,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-28 20:29:56,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:56,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:56,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:56,242 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 20:29:56,242 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:56,242 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 73#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 69#L19-2 [2019-11-28 20:29:56,243 INFO L796 eck$LassoCheckResult]: Loop: 69#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 70#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 69#L19-2 [2019-11-28 20:29:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,243 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-28 20:29:56,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:56,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188586134] [2019-11-28 20:29:56,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,268 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-28 20:29:56,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:56,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218039973] [2019-11-28 20:29:56,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,295 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-28 20:29:56,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:56,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742880848] [2019-11-28 20:29:56,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,324 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:56,350 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:56,350 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:56,350 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:56,350 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:56,351 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:56,351 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,351 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:56,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:56,351 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2019-11-28 20:29:56,351 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:56,352 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:56,354 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 20:29:56,358 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 20:29:56,367 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 20:29:56,371 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 20:29:56,376 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 20:29:56,444 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:56,445 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:56,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:56,458 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,463 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:56,464 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:56,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:56,475 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 20:29:56,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:56,490 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 20:29:56,501 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:56,504 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:56,505 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:56,505 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:56,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:56,505 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:56,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:56,506 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:56,506 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration2_Loop [2019-11-28 20:29:56,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:56,506 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:56,508 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 20:29:56,512 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 20:29:56,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:56,530 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 20:29:56,534 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 20:29:56,603 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:56,604 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 20:29:56,618 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 20:29:56,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:56,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:56,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:56,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:56,624 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:56,624 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 20:29:56,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:56,659 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 20:29:56,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:56,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:56,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:56,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:56,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:56,664 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:56,664 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,671 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:56,674 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:29:56,675 INFO L444 ModelExtractionUtils]: 1 out of 3 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,685 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:56,685 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:56,685 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:56,686 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-28 20:29:56,689 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:29:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:56,737 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:56,737 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:56,745 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:56,745 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:56,757 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 20:29:56,758 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 20:29:56,758 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 20:29:56,776 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-28 20:29:56,777 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 20:29:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 20:29:56,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:29:56,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:56,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:29:56,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:56,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-28 20:29:56,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:56,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-28 20:29:56,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:56,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-28 20:29:56,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 20:29:56,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 20:29:56,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-28 20:29:56,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:29:56,786 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-28 20:29:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-28 20:29:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 20:29:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:29:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-28 20:29:56,790 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-28 20:29:56,790 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-28 20:29:56,791 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:29:56,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-28 20:29:56,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 20:29:56,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:56,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:56,793 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-28 20:29:56,793 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:56,794 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 122#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 128#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 123#L19-2 [2019-11-28 20:29:56,794 INFO L796 eck$LassoCheckResult]: Loop: 123#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 124#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 123#L19-2 [2019-11-28 20:29:56,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-28 20:29:56,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:56,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415674716] [2019-11-28 20:29:56,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,830 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-28 20:29:56,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:56,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125041613] [2019-11-28 20:29:56,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,855 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-28 20:29:56,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:56,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092401045] [2019-11-28 20:29:56,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:56,889 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:56,910 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:56,910 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:56,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:56,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:56,911 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:56,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:56,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:56,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:56,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2019-11-28 20:29:56,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:56,912 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:56,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:56,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:56,921 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 20:29:56,925 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 20:29:56,930 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 20:29:56,987 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:56,987 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 20:29:56,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:56,992 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 20:29:56,997 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:56,998 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} 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) [2019-11-28 20:29:57,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,019 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:57,024 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,039 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 20:29:57,043 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:57,043 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,058 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,063 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:57,063 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,072 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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 20:29:57,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:57,102 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 [2019-11-28 20:29:57,110 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:57,112 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:57,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:57,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:57,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:57,113 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:57,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:57,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:57,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration3_Loop [2019-11-28 20:29:57,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:57,114 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:57,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:29:57,119 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 20:29:57,122 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 20:29:57,125 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 20:29:57,128 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 20:29:57,186 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:57,186 INFO L489 LassoAnalysis]: Using template 'affine'. 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 20:29:57,200 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 20:29:57,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:57,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,202 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 20:29:57,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,204 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 20:29:57,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:29:57,207 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,216 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 20:29:57,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,221 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:57,221 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,226 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,242 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 20:29:57,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:57,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,246 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:57,246 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:29:57,249 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,260 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 20:29:57,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:57,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,272 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,284 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 20:29:57,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:57,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:57,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,292 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:57,295 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 20:29:57,295 INFO L444 ModelExtractionUtils]: 1 out of 3 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,301 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:57,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:57,302 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:57,302 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-28 20:29:57,305 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:57,351 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:57,352 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:57,359 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:57,359 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:57,370 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 20:29:57,371 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 20:29:57,371 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:29:57,390 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-28 20:29:57,391 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 20:29:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 20:29:57,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:29:57,392 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:57,392 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:29:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:57,426 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:57,427 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:57,432 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:57,432 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:57,444 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 20:29:57,445 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 20:29:57,445 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:29:57,491 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-28 20:29:57,492 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 20:29:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-28 20:29:57,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:29:57,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:57,493 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:29:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:57,522 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:57,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:57,529 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:57,530 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:57,543 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 20:29:57,543 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 20:29:57,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 20:29:57,562 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-11-28 20:29:57,564 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 20:29:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 20:29:57,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:29:57,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:57,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 20:29:57,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:57,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 20:29:57,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:57,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-28 20:29:57,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:29:57,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-28 20:29:57,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 20:29:57,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 20:29:57,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-28 20:29:57,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:29:57,571 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-28 20:29:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-28 20:29:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-28 20:29:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 20:29:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-28 20:29:57,577 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:29:57,577 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-28 20:29:57,577 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:29:57,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-28 20:29:57,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 20:29:57,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:29:57,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:29:57,580 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:29:57,581 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:29:57,581 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L19-2 [2019-11-28 20:29:57,581 INFO L796 eck$LassoCheckResult]: Loop: 269#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 271#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 269#L19-2 [2019-11-28 20:29:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:57,582 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-28 20:29:57,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:57,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14573535] [2019-11-28 20:29:57,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:57,599 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-28 20:29:57,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:57,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134345806] [2019-11-28 20:29:57,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:57,612 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:57,613 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-28 20:29:57,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:29:57,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53211682] [2019-11-28 20:29:57,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:29:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:29:57,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:29:57,666 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:57,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:57,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:57,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:57,667 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:29:57,667 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,667 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:57,667 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:57,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2019-11-28 20:29:57,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:57,668 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:57,672 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 20:29:57,675 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 20:29:57,679 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 20:29:57,685 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 20:29:57,688 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 20:29:57,757 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:57,758 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,769 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:57,774 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,782 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:29:57,787 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:29:57,794 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:29:57,809 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,818 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:29:57,821 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:29:57,821 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:29:57,821 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:29:57,821 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:29:57,821 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:29:57,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:29:57,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:29:57,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1.c_Iteration4_Loop [2019-11-28 20:29:57,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:29:57,822 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:29:57,825 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 20:29:57,831 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 20:29:57,836 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 20:29:57,842 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 20:29:57,846 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 20:29:57,926 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:29:57,926 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,935 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 20:29:57,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:57,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:57,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,944 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,951 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 20:29:57,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,958 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:29:57,958 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,964 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,971 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 20:29:57,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:29:57,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:29:57,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:29:57,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:29:57,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:29:57,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:29:57,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:57,978 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:29:57,983 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:29:57,983 INFO L444 ModelExtractionUtils]: 0 out of 3 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:29:57,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:29:57,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:29:57,988 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:29:57,988 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 20:29:57,991 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:29:58,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:29:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:58,015 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:29:58,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:29:58,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:29:58,023 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:29:58,036 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 20:29:58,037 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 20:29:58,037 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-28 20:29:58,050 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2019-11-28 20:29:58,052 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 20:29:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:29:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-28 20:29:58,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 20:29:58,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:58,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 20:29:58,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:58,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 20:29:58,054 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:29:58,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-28 20:29:58,055 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:29:58,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-11-28 20:29:58,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:29:58,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:29:58,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:29:58,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:29:58,057 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:29:58,057 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:29:58,057 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:29:58,057 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 20:29:58,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:29:58,057 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:29:58,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:29:58,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:29:58 BoogieIcfgContainer [2019-11-28 20:29:58,077 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:29:58,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:29:58,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:29:58,079 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:29:58,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:29:54" (3/4) ... [2019-11-28 20:29:58,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:29:58,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:29:58,086 INFO L168 Benchmark]: Toolchain (without parser) took 3666.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:58,086 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:29:58,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.75 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:58,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -181.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:58,089 INFO L168 Benchmark]: Boogie Preprocessor took 21.69 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:58,090 INFO L168 Benchmark]: RCFGBuilder took 206.79 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:58,090 INFO L168 Benchmark]: BuchiAutomizer took 3089.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:29:58,091 INFO L168 Benchmark]: Witness Printer took 5.39 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 20:29:58,095 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.75 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 86.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -181.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.69 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 206.79 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3089.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 79.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 7 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...