./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:38,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:38,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:38,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:38,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:38,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:38,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:38,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:38,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:38,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:38,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:38,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:38,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:38,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:38,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:38,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:38,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:38,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:38,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:38,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:38,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:38,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:38,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:38,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:38,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:38,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:38,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:38,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:38,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:38,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:38,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:38,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:38,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:38,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:38,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:38,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:38,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:38,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:38,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:38,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:38,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:38,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:38,203 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:38,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:38,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:38,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:38,205 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:38,206 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:38,206 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:38,206 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:38,206 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:38,207 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:38,207 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:38,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:38,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:38,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:38,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:38,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:38,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:38,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:38,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:38,209 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:38,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:38,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:38,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:38,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:38,211 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:38,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:38,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:38,212 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:38,213 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:38,213 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 -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2019-11-28 02:57:38,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:38,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:38,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:38,553 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:38,554 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:38,556 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2019-11-28 02:57:38,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2a0ebd86/630d16a2ef774d2cbc0fda1c2f4ddbb1/FLAGcf95a20c5 [2019-11-28 02:57:39,054 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:39,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2019-11-28 02:57:39,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2a0ebd86/630d16a2ef774d2cbc0fda1c2f4ddbb1/FLAGcf95a20c5 [2019-11-28 02:57:39,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2a0ebd86/630d16a2ef774d2cbc0fda1c2f4ddbb1 [2019-11-28 02:57:39,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:39,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:39,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:39,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:39,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:39,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b198c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39, skipping insertion in model container [2019-11-28 02:57:39,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:39,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:39,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:39,665 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:39,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:39,690 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:39,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39 WrapperNode [2019-11-28 02:57:39,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:39,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:39,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:39,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:39,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:39,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:39,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:39,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:39,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... [2019-11-28 02:57:39,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:39,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:39,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:39,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:39,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:39,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:40,004 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:40,004 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:57:40,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:40 BoogieIcfgContainer [2019-11-28 02:57:40,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:40,006 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:40,006 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:40,010 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:40,011 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:40,011 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:39" (1/3) ... [2019-11-28 02:57:40,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12c01c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:40, skipping insertion in model container [2019-11-28 02:57:40,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:40,013 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:39" (2/3) ... [2019-11-28 02:57:40,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12c01c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:40, skipping insertion in model container [2019-11-28 02:57:40,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:40,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:40" (3/3) ... [2019-11-28 02:57:40,015 INFO L371 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2019-11-28 02:57:40,064 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:40,064 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:40,064 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:40,064 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:40,064 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:40,065 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:40,065 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:40,065 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:40,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-28 02:57:40,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:40,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:40,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:40,107 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:40,108 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:40,108 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:40,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-28 02:57:40,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:40,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:40,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:40,110 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:40,110 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:40,119 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2019-11-28 02:57:40,119 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 7#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L18-2true [2019-11-28 02:57:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:57:40,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:40,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986118054] [2019-11-28 02:57:40,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,230 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:40,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:40,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-28 02:57:40,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:40,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042017750] [2019-11-28 02:57:40,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,247 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:40,249 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-28 02:57:40,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:40,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813712369] [2019-11-28 02:57:40,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,265 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:40,352 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:40,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:40,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:40,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:40,354 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:40,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:40,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:40,355 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2019-11-28 02:57:40,355 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:40,356 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:40,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,595 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:40,596 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:40,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:40,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:40,639 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:40,640 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 02:57:40,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,652 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 [2019-11-28 02:57:40,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:40,659 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,690 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 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:40,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:40,715 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:40,717 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:40,717 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:40,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:40,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:40,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:40,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:40,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:40,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2019-11-28 02:57:40,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:40,720 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:40,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,910 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:40,916 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,935 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 02:57:40,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:40,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:40,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:40,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:40,946 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:40,946 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,970 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:40,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:40,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:40,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:40,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:40,976 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:40,977 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,988 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,005 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,009 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-28 02:57:41,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,013 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-28 02:57:41,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,020 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,037 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,044 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:41,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,048 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:41,057 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:41,057 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,070 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:41,071 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:41,071 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:41,072 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 02:57:41,078 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:41,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:41,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:41,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:41,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:41,168 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:41,170 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-28 02:57:41,227 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2019-11-28 02:57:41,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-28 02:57:41,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 02:57:41,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 02:57:41,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 02:57:41,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-11-28 02:57:41,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:41,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-11-28 02:57:41,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-28 02:57:41,246 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-28 02:57:41,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-28 02:57:41,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:41,247 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:57:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-28 02:57:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-28 02:57:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:57:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-28 02:57:41,274 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 02:57:41,274 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 02:57:41,274 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:41,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-28 02:57:41,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:41,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:41,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:41,276 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:41,276 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:41,276 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2019-11-28 02:57:41,276 INFO L796 eck$LassoCheckResult]: Loop: 74#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 73#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2019-11-28 02:57:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 02:57:41,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878361018] [2019-11-28 02:57:41,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,287 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-11-28 02:57:41,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936947657] [2019-11-28 02:57:41,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,302 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,303 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-11-28 02:57:41,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665379023] [2019-11-28 02:57:41,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,323 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,349 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:41,349 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:41,349 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:41,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:41,350 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:41,350 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,350 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:41,350 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:41,350 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2019-11-28 02:57:41,351 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:41,351 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:41,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,376 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 02:57:41,439 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:41,439 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:41,456 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:41,462 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:41,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:41,478 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:41,478 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:41,498 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:41,503 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 02:57:41,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:41,516 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:41,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:41,572 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:41,574 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:41,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:41,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:41,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:41,574 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:41,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:41,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:41,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2019-11-28 02:57:41,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:41,575 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:41,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,669 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:41,669 INFO L489 LassoAnalysis]: Using template 'affine'. 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 02:57:41,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:41,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,696 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,716 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:41,716 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,723 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,733 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:41,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,741 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,759 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:41,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,767 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:41,789 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:57:41,789 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,799 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:41,800 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:41,800 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:41,800 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 02:57:41,803 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:41,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:41,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:41,875 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:41,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:41,905 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:41,906 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 02:57:41,930 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2019-11-28 02:57:41,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-28 02:57:41,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 02:57:41,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:41,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:57:41,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-11-28 02:57:41,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:41,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2019-11-28 02:57:41,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-28 02:57:41,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-28 02:57:41,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2019-11-28 02:57:41,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:41,940 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2019-11-28 02:57:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2019-11-28 02:57:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2019-11-28 02:57:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:57:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-28 02:57:41,943 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-28 02:57:41,943 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-28 02:57:41,943 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:41,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-28 02:57:41,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:57:41,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:41,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:41,946 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-11-28 02:57:41,946 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:41,946 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 125#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2019-11-28 02:57:41,946 INFO L796 eck$LassoCheckResult]: Loop: 129#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 130#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2019-11-28 02:57:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-11-28 02:57:41,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93336832] [2019-11-28 02:57:41,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,986 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-11-28 02:57:41,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,988 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035321030] [2019-11-28 02:57:41,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:42,000 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2019-11-28 02:57:42,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:42,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075622781] [2019-11-28 02:57:42,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:42,032 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:42,054 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:42,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:42,055 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:42,055 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:42,055 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:42,055 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:42,055 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:42,055 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:42,056 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2019-11-28 02:57:42,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:42,056 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:42,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,140 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:42,140 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:42,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:42,149 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:42,169 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:42,169 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:42,231 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:42,233 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:42,233 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:42,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:42,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:42,233 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:42,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:42,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:42,234 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:42,234 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2019-11-28 02:57:42,234 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:42,234 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:42,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:42,311 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:42,312 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:42,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:42,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:42,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:42,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:42,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:42,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:42,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:42,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:42,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:42,334 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:42,334 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:42,340 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:42,340 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:42,340 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:42,341 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:42,344 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:42,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:42,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:42,397 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:42,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:42,406 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:42,407 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-28 02:57:42,429 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-11-28 02:57:42,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-28 02:57:42,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:42,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:42,433 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:42,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:42,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:42,461 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:42,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:42,473 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:42,473 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-28 02:57:42,493 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-11-28 02:57:42,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-28 02:57:42,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:42,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:42,496 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:57:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:42,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:42,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:42,526 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:42,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:42,540 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:57:42,540 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-28 02:57:42,568 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2019-11-28 02:57:42,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:42,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-28 02:57:42,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:57:42,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:42,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:57:42,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:42,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 02:57:42,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:42,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-11-28 02:57:42,596 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:42,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-11-28 02:57:42,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:42,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:42,597 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:42,597 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:42,597 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:42,597 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:42,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:42,598 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:42,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 02:57:42,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:42 BoogieIcfgContainer [2019-11-28 02:57:42,608 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:42,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:42,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:42,609 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:42,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:40" (3/4) ... [2019-11-28 02:57:42,613 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:42,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:42,616 INFO L168 Benchmark]: Toolchain (without parser) took 3174.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.0 MB). Free memory was 961.7 MB in the beginning and 1.2 GB in the end (delta: -232.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:42,617 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:42,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.23 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:42,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.72 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:42,619 INFO L168 Benchmark]: Boogie Preprocessor took 81.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:42,620 INFO L168 Benchmark]: RCFGBuilder took 199.78 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:42,621 INFO L168 Benchmark]: BuchiAutomizer took 2601.98 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -86.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:42,621 INFO L168 Benchmark]: Witness Printer took 4.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:42,625 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 249.23 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 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 32.72 ms. Allocated memory is still 1.0 GB. Free memory is still 951.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 199.78 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2601.98 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -86.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 32 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 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...