./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2291f924dd9adb1923bbd2b3119647838e71c665 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:56:52,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:56:52,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:56:52,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:56:52,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:56:52,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:56:52,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:56:52,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:56:52,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:56:52,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:56:52,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:56:52,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:56:52,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:56:52,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:56:52,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:56:52,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:56:52,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:56:52,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:56:52,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:56:52,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:56:52,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:56:52,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:56:52,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:56:52,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:56:52,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:56:52,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:56:52,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:56:52,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:56:52,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:56:52,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:56:52,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:56:52,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:56:52,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:56:52,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:56:52,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:56:52,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:56:52,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:56:52,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:56:52,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:56:52,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:56:52,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:56:52,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:56:52,879 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:56:52,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:56:52,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:56:52,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:56:52,884 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:56:52,884 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:56:52,885 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:56:52,885 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:56:52,885 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:56:52,886 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:56:52,887 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:56:52,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:56:52,887 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:56:52,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:56:52,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:56:52,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:56:52,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:56:52,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:56:52,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:56:52,889 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:56:52,889 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:56:52,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:56:52,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:56:52,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:56:52,891 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:56:52,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:56:52,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:56:52,892 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:56:52,893 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:56:52,893 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 -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2019-11-28 02:56:53,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:56:53,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:56:53,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:56:53,246 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:56:53,247 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:56:53,249 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2019-11-28 02:56:53,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b0ee411/4066f2a0f9334464a0a8cc94d6aac21e/FLAG5e68498e7 [2019-11-28 02:56:53,736 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:56:53,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2019-11-28 02:56:53,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b0ee411/4066f2a0f9334464a0a8cc94d6aac21e/FLAG5e68498e7 [2019-11-28 02:56:54,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b0ee411/4066f2a0f9334464a0a8cc94d6aac21e [2019-11-28 02:56:54,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:56:54,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:56:54,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:56:54,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:56:54,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:56:54,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee01756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54, skipping insertion in model container [2019-11-28 02:56:54,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:56:54,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:56:54,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:56:54,372 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:56:54,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:56:54,410 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:56:54,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54 WrapperNode [2019-11-28 02:56:54,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:56:54,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:56:54,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:56:54,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:56:54,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:56:54,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:56:54,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:56:54,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:56:54,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (1/1) ... [2019-11-28 02:56:54,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:56:54,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:56:54,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:56:54,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:56:54,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (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 02:56:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:56:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:56:54,783 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:56:54,784 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:56:54,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:54 BoogieIcfgContainer [2019-11-28 02:56:54,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:56:54,785 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:56:54,785 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:56:54,788 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:56:54,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:54,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:54" (1/3) ... [2019-11-28 02:56:54,791 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520ef575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:54, skipping insertion in model container [2019-11-28 02:56:54,791 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:54,791 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:54" (2/3) ... [2019-11-28 02:56:54,792 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520ef575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:54, skipping insertion in model container [2019-11-28 02:56:54,792 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:54,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:54" (3/3) ... [2019-11-28 02:56:54,794 INFO L371 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2019-11-28 02:56:54,846 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:56:54,846 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:56:54,847 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:56:54,847 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:56:54,847 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:56:54,847 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:56:54,848 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:56:54,848 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:56:54,865 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 02:56:54,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:54,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:54,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:54,902 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:56:54,902 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:56:54,903 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:56:54,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-28 02:56:54,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:54,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:54,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:54,906 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:56:54,906 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:56:54,921 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 3#L21true assume !!(main_~z~0 <= 1073741823); 7#L24-2true [2019-11-28 02:56:54,922 INFO L796 eck$LassoCheckResult]: Loop: 7#L24-2true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 9#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 7#L24-2true [2019-11-28 02:56:54,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:54,930 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2019-11-28 02:56:54,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:54,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134957243] [2019-11-28 02:56:54,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:55,089 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 1 times [2019-11-28 02:56:55,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:55,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989400630] [2019-11-28 02:56:55,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:55,115 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:55,118 INFO L82 PathProgramCache]: Analyzing trace with hash 29742639, now seen corresponding path program 1 times [2019-11-28 02:56:55,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:55,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483872848] [2019-11-28 02:56:55,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:55,135 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:55,214 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:55,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:55,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:55,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:55,215 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:56:55,215 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:55,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:55,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2019-11-28 02:56:55,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:55,216 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:55,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,262 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 02:56:55,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,383 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:55,384 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:55,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:55,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:55,405 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:55,415 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:55,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:55,424 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:55,445 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:56:55,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:55,473 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:56:55,476 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:55,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:55,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:55,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:55,476 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:56:55,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,476 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:55,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:55,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2019-11-28 02:56:55,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:55,477 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:55,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:55,602 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:55,610 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:55,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:55,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:55,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:55,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:55,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:55,642 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:55,643 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,652 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 02:56:55,666 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:55,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:55,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:55,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:55,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:55,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:55,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:55,685 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:55,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:55,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:55,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:55,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:55,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:55,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:55,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:55,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,715 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:56:55,722 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:56:55,722 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:55,736 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:56:55,737 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:56:55,737 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:56:55,738 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-28 02:56:55,745 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:56:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:55,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:55,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:55,826 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:55,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:55,863 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:56:55,864 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-28 02:56:55,932 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 8 states. [2019-11-28 02:56:55,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:56:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:56:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-28 02:56:55,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 02:56:55,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:55,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 02:56:55,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:55,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-28 02:56:55,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:55,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2019-11-28 02:56:55,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:55,951 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2019-11-28 02:56:55,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 02:56:55,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:56:55,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-28 02:56:55,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:56:55,954 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 02:56:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-28 02:56:55,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 02:56:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 02:56:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-28 02:56:55,986 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 02:56:55,986 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 02:56:55,987 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:56:55,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-28 02:56:55,988 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:55,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:55,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:55,990 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 02:56:55,990 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:55,990 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 82#L21 assume !!(main_~z~0 <= 1073741823); 83#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 91#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2019-11-28 02:56:55,991 INFO L796 eck$LassoCheckResult]: Loop: 86#L27 assume !!(main_~z~0 <= 1073741823); 87#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 88#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2019-11-28 02:56:55,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:55,991 INFO L82 PathProgramCache]: Analyzing trace with hash 29742632, now seen corresponding path program 1 times [2019-11-28 02:56:55,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:55,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953080713] [2019-11-28 02:56:55,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,021 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:56,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash 57342, now seen corresponding path program 1 times [2019-11-28 02:56:56,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:56,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246648178] [2019-11-28 02:56:56,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:56,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514487, now seen corresponding path program 1 times [2019-11-28 02:56:56,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:56,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330969347] [2019-11-28 02:56:56,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,053 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:56,089 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:56,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:56,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:56,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:56,090 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:56:56,090 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:56,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:56,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2019-11-28 02:56:56,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:56,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:56,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,190 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:56,191 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:56,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:56,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:56,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:56,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:56,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:56,237 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:56,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:56,259 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:56,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=389769356, ULTIMATE.start_main_~z~0=389769356} Honda state: {ULTIMATE.start_main_#t~nondet2=389769356, ULTIMATE.start_main_~z~0=389769356} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:56,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:56,282 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 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 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 02:56:56,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:56:56,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:56:56,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:56:56,335 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:56,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:56,335 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:56,335 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:56,335 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:56:56,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:56,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:56,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2019-11-28 02:56:56,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:56,336 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:56,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,422 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:56,422 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,440 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:56,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:56,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:56,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:56,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:56,446 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:56,446 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:56,451 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:56,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:56,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:56,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:56,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:56,468 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:56,468 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:56,479 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:56,495 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:56,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:56,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:56,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:56,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:56,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:56,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:56,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,502 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:56,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:56,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:56,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:56,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:56,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:56,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:56,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:56:56,525 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:56:56,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:56:56,528 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:56:56,536 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:56:56,536 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:56:56,537 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:56:56,537 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-28 02:56:56,539 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:56:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:56,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:56,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:56,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:56,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:56,614 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:56:56,614 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-28 02:56:56,645 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 15 states and 20 transitions. Complement of second has 6 states. [2019-11-28 02:56:56,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:56:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:56:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-28 02:56:56,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-28 02:56:56,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:56,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-28 02:56:56,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:56,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-28 02:56:56,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:56,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2019-11-28 02:56:56,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:56:56,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2019-11-28 02:56:56,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 02:56:56,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-28 02:56:56,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-11-28 02:56:56,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:56:56,660 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-28 02:56:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-11-28 02:56:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2019-11-28 02:56:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 02:56:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2019-11-28 02:56:56,666 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-28 02:56:56,666 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-11-28 02:56:56,666 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:56:56,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2019-11-28 02:56:56,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:56:56,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:56,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:56,669 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:56:56,670 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:56:56,670 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 154#L21 assume !!(main_~z~0 <= 1073741823); 155#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 163#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L27 assume !!(main_~z~0 <= 1073741823); 160#L24-2 [2019-11-28 02:56:56,670 INFO L796 eck$LassoCheckResult]: Loop: 160#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 165#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 160#L24-2 [2019-11-28 02:56:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash 922021620, now seen corresponding path program 2 times [2019-11-28 02:56:56,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:56,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514555893] [2019-11-28 02:56:56,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:56,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 2 times [2019-11-28 02:56:56,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:56,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308252839] [2019-11-28 02:56:56,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,713 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:56,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514494, now seen corresponding path program 1 times [2019-11-28 02:56:56,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:56,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779092902] [2019-11-28 02:56:56,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:56,758 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:56,794 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:56,794 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:56,794 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:56,794 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:56,795 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:56:56,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:56,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:56,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2019-11-28 02:56:56,795 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:56,796 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:56,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:56,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:56,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:56,892 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:56,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:56:56,912 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,921 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:56:56,923 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:56,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:56,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:56,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:56,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:56:56,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:56,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:56,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:56,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2019-11-28 02:56:56,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:56,927 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:56,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:56,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,019 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:57,020 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:57,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:57,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:57,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:57,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:57,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:57,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:57,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:56:57,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:56:57,037 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:56:57,037 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,047 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:56:57,047 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:56:57,047 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:56:57,047 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-28 02:56:57,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:56:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,087 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:57,100 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:56:57,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-28 02:56:57,115 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 20 states and 27 transitions. Complement of second has 5 states. [2019-11-28 02:56:57,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:56:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:56:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 02:56:57,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 02:56:57,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-28 02:56:57,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-28 02:56:57,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2019-11-28 02:56:57,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:56:57,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2019-11-28 02:56:57,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 02:56:57,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:56:57,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2019-11-28 02:56:57,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:56:57,121 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-28 02:56:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2019-11-28 02:56:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 02:56:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:56:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2019-11-28 02:56:57,123 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-28 02:56:57,124 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2019-11-28 02:56:57,124 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:56:57,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2019-11-28 02:56:57,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-28 02:56:57,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:57,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:57,126 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2019-11-28 02:56:57,126 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:56:57,126 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 235#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 232#L21 assume !!(main_~z~0 <= 1073741823); 233#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 242#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 236#L27 assume !!(main_~z~0 <= 1073741823); 237#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 246#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 238#L27 assume !!(main_~z~0 <= 1073741823); 239#L24-2 [2019-11-28 02:56:57,126 INFO L796 eck$LassoCheckResult]: Loop: 239#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 244#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 239#L24-2 [2019-11-28 02:56:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1630243461, now seen corresponding path program 3 times [2019-11-28 02:56:57,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:57,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058009685] [2019-11-28 02:56:57,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:57,143 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 3 times [2019-11-28 02:56:57,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:57,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440382075] [2019-11-28 02:56:57,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:57,151 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,152 INFO L82 PathProgramCache]: Analyzing trace with hash -999096369, now seen corresponding path program 2 times [2019-11-28 02:56:57,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:57,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534403760] [2019-11-28 02:56:57,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:57,177 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:57,205 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:57,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:57,205 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:57,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:57,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:56:57,206 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,206 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:57,206 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:57,206 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2019-11-28 02:56:57,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:57,207 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:57,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,283 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:57,284 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:57,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:57,295 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,300 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:56:57,300 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:57,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:56:57,346 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:57,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:56:57,365 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,376 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:56:57,379 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:57,379 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:57,379 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:57,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:57,379 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:56:57,380 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,380 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:57,380 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:57,380 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2019-11-28 02:56:57,380 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:57,380 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:57,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:56:57,463 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:57,463 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:57,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:56:57,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:57,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:57,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:57,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:57,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:57,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:57,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:56:57,484 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:56:57,484 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:57,490 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:56:57,491 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:56:57,491 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:56:57,491 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2019-11-28 02:56:57,502 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,571 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:57,590 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:56:57,590 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 02:56:57,609 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2019-11-28 02:56:57,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:56:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:56:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 02:56:57,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-28 02:56:57,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,611 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:56:57,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,645 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:57,663 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:56:57,663 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 02:56:57,677 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2019-11-28 02:56:57,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:56:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:56:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-28 02:56:57,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-28 02:56:57,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,679 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:56:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:57,712 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:57,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:57,723 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 02:56:57,723 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-28 02:56:57,738 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 4 states. [2019-11-28 02:56:57,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 02:56:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:56:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-28 02:56:57,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-28 02:56:57,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2019-11-28 02:56:57,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-28 02:56:57,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:57,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-11-28 02:56:57,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:56:57,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-28 02:56:57,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:56:57,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:56:57,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:56:57,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:57,744 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:56:57,744 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:56:57,745 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:56:57,746 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:56:57,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:56:57,746 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:56:57,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:56:57,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:57 BoogieIcfgContainer [2019-11-28 02:56:57,755 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:56:57,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:56:57,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:56:57,757 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:56:57,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:54" (3/4) ... [2019-11-28 02:56:57,765 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:56:57,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:56:57,768 INFO L168 Benchmark]: Toolchain (without parser) took 3654.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.3 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 42.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:57,769 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:56:57,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:57,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:57,772 INFO L168 Benchmark]: Boogie Preprocessor took 30.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:56:57,772 INFO L168 Benchmark]: RCFGBuilder took 243.18 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:57,773 INFO L168 Benchmark]: BuchiAutomizer took 2970.20 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 82.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.0 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:57,774 INFO L168 Benchmark]: Witness Printer took 8.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:56:57,778 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.25 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 98.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 243.18 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2970.20 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 82.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.0 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. * Witness Printer took 8.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 8 SDs, 0 SdLazy, 34 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...