./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.01_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/c.01_assume.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 da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:31:53,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:31:53,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:31:53,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:31:53,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:31:53,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:31:53,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:31:53,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:31:53,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:31:53,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:31:53,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:31:53,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:31:53,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:31:53,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:31:53,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:31:53,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:31:53,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:31:53,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:31:53,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:31:53,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:31:53,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:31:53,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:31:53,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:31:53,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:31:53,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:31:53,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:31:53,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:31:53,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:31:53,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:31:53,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:31:53,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:31:53,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:31:53,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:31:53,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:31:53,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:31:53,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:31:53,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:31:53,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:31:53,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:31:53,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:31:53,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:31:53,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:31:53,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:31:53,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:31:53,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:31:53,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:31:53,390 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:31:53,390 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:31:53,390 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:31:53,391 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:31:53,391 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:31:53,391 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:31:53,392 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:31:53,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:31:53,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:31:53,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:31:53,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:31:53,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:31:53,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:31:53,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:31:53,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:31:53,394 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:31:53,394 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:31:53,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:31:53,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:31:53,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:31:53,396 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:31:53,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:31:53,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:31:53,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:31:53,397 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:31:53,398 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:31:53,398 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 -> da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 [2019-11-28 20:31:53,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:31:53,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:31:53,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:31:53,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:31:53,705 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:31:53,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2019-11-28 20:31:53,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf303ba1/6ff7b8457395451ea1ce432346ca0a8a/FLAGd6e677c3d [2019-11-28 20:31:54,267 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:31:54,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2019-11-28 20:31:54,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf303ba1/6ff7b8457395451ea1ce432346ca0a8a/FLAGd6e677c3d [2019-11-28 20:31:54,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf303ba1/6ff7b8457395451ea1ce432346ca0a8a [2019-11-28 20:31:54,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:31:54,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:31:54,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:31:54,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:31:54,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:31:54,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:54,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5525f062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54, skipping insertion in model container [2019-11-28 20:31:54,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:54,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:31:54,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:31:54,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:31:54,871 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:31:54,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:31:54,908 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:31:54,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54 WrapperNode [2019-11-28 20:31:54,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:31:54,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:31:54,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:31:54,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:31:54,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:54,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:31:55,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:31:55,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:31:55,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:31:55,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... [2019-11-28 20:31:55,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:31:55,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:31:55,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:31:55,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:31:55,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:31:55,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:31:55,219 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:31:55,219 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 20:31:55,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:31:55 BoogieIcfgContainer [2019-11-28 20:31:55,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:31:55,221 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:31:55,221 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:31:55,224 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:31:55,225 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:31:55,225 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:31:54" (1/3) ... [2019-11-28 20:31:55,226 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@714bb6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:31:55, skipping insertion in model container [2019-11-28 20:31:55,226 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:31:55,226 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:31:54" (2/3) ... [2019-11-28 20:31:55,227 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@714bb6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:31:55, skipping insertion in model container [2019-11-28 20:31:55,227 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:31:55,227 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:31:55" (3/3) ... [2019-11-28 20:31:55,229 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.01_assume.c [2019-11-28 20:31:55,276 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:31:55,276 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:31:55,276 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:31:55,277 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:31:55,277 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:31:55,277 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:31:55,277 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:31:55,277 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:31:55,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 20:31:55,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:31:55,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:55,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:55,316 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:31:55,316 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:31:55,316 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:31:55,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 20:31:55,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 20:31:55,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:55,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:55,318 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 20:31:55,318 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 20:31:55,325 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L9-2true [2019-11-28 20:31:55,325 INFO L796 eck$LassoCheckResult]: Loop: 6#L9-2true assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 10#L11-2true assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 8#L11-3true main_~x~0 := main_~x~0 - 1; 6#L9-2true [2019-11-28 20:31:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:55,331 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 20:31:55,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:55,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356361304] [2019-11-28 20:31:55,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:55,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:55,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:55,428 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-28 20:31:55,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:55,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394895166] [2019-11-28 20:31:55,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:55,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-28 20:31:55,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:55,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077347261] [2019-11-28 20:31:55,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:55,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:55,680 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2019-11-28 20:31:55,711 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:55,712 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:55,712 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:55,712 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:55,712 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:31:55,712 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:55,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:55,713 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:55,713 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2019-11-28 20:31:55,713 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:55,713 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:55,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:55,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:55,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:55,871 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:55,872 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:55,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:55,888 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:55,899 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:55,900 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:55,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:55,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 20:31:55,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:55,912 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:55,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:55,933 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:55,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:55,950 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:55,969 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:55,971 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:55,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:55,972 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:55,972 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:55,972 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:55,972 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:55,972 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:55,972 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:55,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2019-11-28 20:31:55,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:55,974 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:55,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:55,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:55,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,074 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:56,079 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:31:56,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:56,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:56,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:56,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:56,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:56,106 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:56,113 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:31:56,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:56,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:56,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:56,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:56,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:56,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:56,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 20:31:56,134 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:56,143 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:31:56,143 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,161 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:31:56,161 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:31:56,161 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:56,162 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 20:31:56,168 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:31:56,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:56,209 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:56,211 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:56,222 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:31:56,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:56,259 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:31:56,261 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-28 20:31:56,323 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-11-28 20:31:56,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:31:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-28 20:31:56,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-28 20:31:56,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:56,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-28 20:31:56,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:56,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-28 20:31:56,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:56,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-28 20:31:56,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:31:56,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-28 20:31:56,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-28 20:31:56,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-28 20:31:56,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-28 20:31:56,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:31:56,344 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 20:31:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-28 20:31:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-28 20:31:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 20:31:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-28 20:31:56,376 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-28 20:31:56,376 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-28 20:31:56,376 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:31:56,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-11-28 20:31:56,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:31:56,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:56,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:56,378 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 20:31:56,378 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:31:56,378 INFO L794 eck$LassoCheckResult]: Stem: 70#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 71#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 73#L11-2 [2019-11-28 20:31:56,378 INFO L796 eck$LassoCheckResult]: Loop: 73#L11-2 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 73#L11-2 [2019-11-28 20:31:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 20:31:56,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:56,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934169617] [2019-11-28 20:31:56,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,398 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,399 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-28 20:31:56,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:56,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748397157] [2019-11-28 20:31:56,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,429 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:56,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,430 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-28 20:31:56,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:56,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866973828] [2019-11-28 20:31:56,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,451 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:56,483 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:56,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:56,484 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:56,484 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:56,484 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:31:56,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:56,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:56,485 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2019-11-28 20:31:56,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:56,485 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:56,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,563 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:56,563 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:56,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:56,573 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,578 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:56,579 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:56,597 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:56,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:56,621 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,638 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:56,642 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:56,642 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:56,642 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:56,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:56,643 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:56,643 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,643 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:56,643 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:56,643 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2019-11-28 20:31:56,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:56,644 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:56,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:56,729 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:56,729 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:31:56,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:56,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:56,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:56,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:56,749 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:56,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:56,754 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:56,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:31:56,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:56,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:56,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:56,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:56,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:56,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:56,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,779 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:56,783 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:31:56,783 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:56,790 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:31:56,791 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:31:56,791 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:56,791 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2019-11-28 20:31:56,800 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 20:31:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:56,863 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:56,863 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:56,868 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:56,868 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:56,869 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:31:56,869 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-28 20:31:56,897 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-11-28 20:31:56,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:31:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-28 20:31:56,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-28 20:31:56,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:56,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-28 20:31:56,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:56,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 20:31:56,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:56,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-11-28 20:31:56,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:31:56,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-11-28 20:31:56,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-28 20:31:56,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-28 20:31:56,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-28 20:31:56,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 20:31:56,906 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-28 20:31:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-28 20:31:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-28 20:31:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-28 20:31:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-28 20:31:56,908 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-28 20:31:56,908 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-28 20:31:56,908 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:31:56,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-28 20:31:56,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:31:56,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:31:56,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:31:56,911 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-28 20:31:56,911 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:31:56,912 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 119#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 120#L11-2 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 123#L11-3 main_~x~0 := main_~x~0 - 1; 121#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 122#L11-2 [2019-11-28 20:31:56,912 INFO L796 eck$LassoCheckResult]: Loop: 122#L11-2 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 122#L11-2 [2019-11-28 20:31:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-11-28 20:31:56,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:56,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531209538] [2019-11-28 20:31:56,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,944 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,945 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-28 20:31:56,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:56,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511092765] [2019-11-28 20:31:56,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:31:56,966 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:31:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2019-11-28 20:31:56,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:31:56,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949735393] [2019-11-28 20:31:56,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:31:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:57,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949735393] [2019-11-28 20:31:57,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633524464] [2019-11-28 20:31:57,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 20:31:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,082 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:31:57,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 20:31:57,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 20:31:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:57,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:31:57,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2019-11-28 20:31:57,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605830526] [2019-11-28 20:31:57,230 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:57,230 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:57,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:57,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:57,231 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 20:31:57,231 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:57,231 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:57,231 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:57,232 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2019-11-28 20:31:57,232 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:57,232 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:57,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:57,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:57,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:57,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:57,333 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:57,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:57,341 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:57,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 20:31:57,346 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:57,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 20:31:57,359 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:57,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 20:31:57,384 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:57,394 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 20:31:57,397 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:31:57,397 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:31:57,397 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:31:57,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:31:57,398 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:31:57,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:57,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:31:57,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:31:57,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2019-11-28 20:31:57,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:31:57,398 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:31:57,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:57,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:57,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:31:57,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:31:57,475 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:31:57,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:31:57,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:57,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:57,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:57,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:57,495 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:31:57,497 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:31:57,503 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 20:31:57,519 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:31:57,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:31:57,522 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:31:57,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:31:57,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:31:57,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:31:57,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:31:57,525 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 20:31:57,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:31:57,534 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 20:31:57,534 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:31:57,559 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:31:57,559 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 20:31:57,559 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:31:57,560 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] [2019-11-28 20:31:57,563 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 20:31:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,588 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,589 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,596 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:57,598 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:31:57,598 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-28 20:31:57,614 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-11-28 20:31:57,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:31:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-28 20:31:57,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-28 20:31:57,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:57,617 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:31:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,644 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,644 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,653 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,654 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:57,654 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:31:57,654 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-28 20:31:57,666 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-11-28 20:31:57,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:31:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-28 20:31:57,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-28 20:31:57,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:57,669 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 20:31:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:31:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:31:57,704 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:31:57,705 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:31:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:31:57,705 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-28 20:31:57,707 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-28 20:31:57,726 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-11-28 20:31:57,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 20:31:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-28 20:31:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 20:31:57,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-28 20:31:57,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:57,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-28 20:31:57,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:57,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:31:57,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:31:57,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-11-28 20:31:57,731 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:31:57,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-28 20:31:57,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:31:57,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:31:57,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:31:57,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:31:57,733 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:57,734 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:57,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:31:57,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:31:57,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:31:57,741 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 10 states. [2019-11-28 20:31:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:31:57,745 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-28 20:31:57,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:31:57,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-28 20:31:57,746 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:31:57,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 20:31:57,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 20:31:57,747 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 20:31:57,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 20:31:57,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:31:57,747 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:57,747 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:57,748 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 20:31:57,748 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 20:31:57,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 20:31:57,748 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 20:31:57,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 20:31:57,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:31:57 BoogieIcfgContainer [2019-11-28 20:31:57,756 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:31:57,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:31:57,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:31:57,758 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:31:57,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:31:55" (3/4) ... [2019-11-28 20:31:57,763 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:31:57,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:31:57,772 INFO L168 Benchmark]: Toolchain (without parser) took 3113.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 955.0 MB in the beginning and 867.3 MB in the end (delta: 87.7 MB). Peak memory consumption was 238.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:57,773 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:31:57,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.89 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:57,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -210.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:57,776 INFO L168 Benchmark]: Boogie Preprocessor took 18.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:57,777 INFO L168 Benchmark]: RCFGBuilder took 195.22 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:57,781 INFO L168 Benchmark]: BuchiAutomizer took 2535.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 867.3 MB in the end (delta: 263.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:31:57,783 INFO L168 Benchmark]: Witness Printer took 5.59 ms. Allocated memory is still 1.2 GB. Free memory is still 867.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:31:57,796 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.89 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 95.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -210.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 195.22 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: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2535.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 867.3 MB in the end (delta: 263.0 MB). Peak memory consumption was 263.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.59 ms. Allocated memory is still 1.2 GB. Free memory is still 867.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 25 SDslu, 9 SDs, 0 SdLazy, 32 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf98 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...