./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer --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 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:53,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:53,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:53,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:53,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:53,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:53,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:53,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:53,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:53,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:53,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:53,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:53,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:53,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:53,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:53,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:53,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:53,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:53,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:53,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:53,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:53,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:53,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:53,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:53,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:53,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:53,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:53,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:53,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:53,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:53,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:53,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:53,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:53,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:53,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:53,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:53,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:53,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:53,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:53,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:53,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:53,818 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:46:53,833 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:53,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:53,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:53,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:53,835 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:53,835 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:46:53,835 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:46:53,835 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:46:53,836 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:46:53,836 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:46:53,836 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:46:53,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:53,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:46:53,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:53,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:53,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:46:53,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:46:53,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:46:53,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:53,838 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:46:53,838 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:53,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:46:53,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:53,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:53,838 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:46:53,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:53,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:53,839 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:46:53,840 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:46:53,840 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer 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 -> 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 [2019-11-25 08:46:53,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:53,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:53,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:53,988 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:53,989 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:53,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.08.c [2019-11-25 08:46:54,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/data/0d3480ac5/9a52c87e0a614a25adf0b9f01c2f050b/FLAGec20192c0 [2019-11-25 08:46:54,465 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:54,466 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/sv-benchmarks/c/termination-restricted-15/c.08.c [2019-11-25 08:46:54,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/data/0d3480ac5/9a52c87e0a614a25adf0b9f01c2f050b/FLAGec20192c0 [2019-11-25 08:46:54,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/data/0d3480ac5/9a52c87e0a614a25adf0b9f01c2f050b [2019-11-25 08:46:54,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:54,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:54,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:54,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:54,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:54,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40efa32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54, skipping insertion in model container [2019-11-25 08:46:54,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:54,529 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:54,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:54,658 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:54,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:54,743 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:54,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54 WrapperNode [2019-11-25 08:46:54,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:54,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:54,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:54,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:54,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:54,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:54,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:54,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:54,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... [2019-11-25 08:46:54,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:54,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:54,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:54,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:54,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:55,021 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:55,021 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:46:55,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:55 BoogieIcfgContainer [2019-11-25 08:46:55,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:55,023 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:46:55,023 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:46:55,026 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:46:55,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:55,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:46:54" (1/3) ... [2019-11-25 08:46:55,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d224dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:46:55, skipping insertion in model container [2019-11-25 08:46:55,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:55,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:54" (2/3) ... [2019-11-25 08:46:55,029 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d224dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:46:55, skipping insertion in model container [2019-11-25 08:46:55,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:55,030 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:55" (3/3) ... [2019-11-25 08:46:55,032 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.08.c [2019-11-25 08:46:55,081 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:46:55,081 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:46:55,081 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:46:55,082 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:55,082 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:55,082 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:46:55,082 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:55,083 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:46:55,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:46:55,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:55,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:55,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:55,123 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:55,123 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:46:55,124 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:46:55,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:46:55,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:46:55,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:55,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:55,126 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:55,126 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:46:55,134 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-2true [2019-11-25 08:46:55,134 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 >= 0);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 <= main_~i~0 - 1); 10#L12-3true main_~i~0 := main_~i~0 - 1; 8#L10-2true [2019-11-25 08:46:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:55,141 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:46:55,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:55,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30065047] [2019-11-25 08:46:55,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,235 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-25 08:46:55,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:55,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016218599] [2019-11-25 08:46:55,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,249 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:55,251 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-25 08:46:55,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:55,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950952451] [2019-11-25 08:46:55,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:55,263 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:55,345 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:55,346 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:55,346 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:55,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:55,347 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:55,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:55,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:55,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:55,348 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-11-25 08:46:55,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:55,348 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:55,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:55,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:55,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:55,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:55,541 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:55,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:55,554 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:55,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:55,564 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 /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:55,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:55,581 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:55,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:55,589 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 /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:55,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:55,602 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:55,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:55,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:55,649 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:55,651 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:55,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:55,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:55,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:55,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:55,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:55,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:55,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:55,652 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-11-25 08:46:55,652 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:55,653 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:55,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:55,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:55,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:55,741 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:55,746 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:55,751 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 [2019-11-25 08:46:55,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:55,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:55,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:55,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:55,759 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:55,760 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 [2019-11-25 08:46:55,765 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:55,771 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 [2019-11-25 08:46:55,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:55,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:55,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:55,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:55,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:55,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:46:55,785 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:55,806 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 [2019-11-25 08:46:55,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:55,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:55,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:55,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:55,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:55,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:55,811 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 [2019-11-25 08:46:55,814 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:55,818 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:55,819 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:55,826 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:55,826 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:55,826 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:55,827 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-11-25 08:46:55,832 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:55,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:55,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:55,878 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:55,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:55,908 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 [2019-11-25 08:46:55,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-25 08:46:55,956 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2019-11-25 08:46:55,957 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 [2019-11-25 08:46:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-25 08:46:55,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-25 08:46:55,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:55,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:46:55,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:55,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-25 08:46:55,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:55,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-25 08:46:55,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:46:55,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-25 08:46:55,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:55,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-25 08:46:55,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-25 08:46:55,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:55,971 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:46:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-25 08:46:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-25 08:46:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:46:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-25 08:46:55,995 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-25 08:46:55,995 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-25 08:46:55,995 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:46:55,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-11-25 08:46:55,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:46:55,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:55,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:55,996 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:46:55,996 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:46:55,996 INFO L794 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 70#L12-2 [2019-11-25 08:46:55,997 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 70#L12-2 [2019-11-25 08:46:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:46:55,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:55,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540588017] [2019-11-25 08:46:55,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,005 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-25 08:46:56,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646088745] [2019-11-25 08:46:56,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,011 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,012 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-25 08:46:56,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794159635] [2019-11-25 08:46:56,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,028 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,043 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,043 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:56,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-11-25 08:46:56,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,044 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,109 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,109 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,122 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,130 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:56,130 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 /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,149 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:56,170 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 [2019-11-25 08:46:56,355 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:56,357 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,357 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,357 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:56,358 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,358 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,358 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,358 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-11-25 08:46:56,358 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,358 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,416 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,416 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,425 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 [2019-11-25 08:46:56,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:56,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:56,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:56,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:56,430 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:56,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:46:56,434 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:56,448 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 [2019-11-25 08:46:56,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:56,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:56,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:56,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:56,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:56,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:56,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:56,460 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:56,462 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:56,463 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:56,475 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:56,475 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:56,475 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:46:56,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:56,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:56,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:56,534 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:56,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:56,535 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:46:56,535 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-25 08:46:56,549 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2019-11-25 08:46:56,550 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 [2019-11-25 08:46:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:46:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:46:56,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-25 08:46:56,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:56,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-25 08:46:56,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:56,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-25 08:46:56,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:56,552 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-11-25 08:46:56,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:46:56,553 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-11-25 08:46:56,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:56,553 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:46:56,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-25 08:46:56,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:56,554 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-25 08:46:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-25 08:46:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-25 08:46:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:46:56,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-25 08:46:56,555 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-25 08:46:56,555 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-25 08:46:56,555 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:46:56,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-25 08:46:56,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:46:56,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:56,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:56,556 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-25 08:46:56,556 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:46:56,556 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 122#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 119#L12-2 assume !(main_~j~0 <= main_~i~0 - 1); 120#L12-3 main_~i~0 := main_~i~0 - 1; 123#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 118#L12-2 [2019-11-25 08:46:56,556 INFO L796 eck$LassoCheckResult]: Loop: 118#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 118#L12-2 [2019-11-25 08:46:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-11-25 08:46:56,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493138367] [2019-11-25 08:46:56,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:56,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493138367] [2019-11-25 08:46:56,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:56,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:46:56,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102797599] [2019-11-25 08:46:56,609 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:46:56,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:56,609 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-25 08:46:56,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:56,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752670469] [2019-11-25 08:46:56,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:56,616 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:56,632 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:56,633 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-11-25 08:46:56,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,633 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,691 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,691 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:56,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:56,700 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:56,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:56,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:56,720 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:56,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:56,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:56,878 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:56,880 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:56,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:56,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:56,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:56,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:56,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:56,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:56,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:56,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-11-25 08:46:56,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:56,881 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:56,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:56,962 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:56,962 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/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 [2019-11-25 08:46:56,975 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 [2019-11-25 08:46:56,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:56,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:56,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:56,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:56,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:56,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:56,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:56,981 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:56,986 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-25 08:46:56,987 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a49d28f-1240-4251-8747-40662b30ecab/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:57,005 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:57,006 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:57,006 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:57,006 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-25 08:46:57,019 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,054 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:57,056 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:46:57,056 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-25 08:46:57,073 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-11-25 08:46:57,074 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 [2019-11-25 08:46:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:46:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:46:57,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:46:57,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,075 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,112 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:57,112 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:46:57,113 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-25 08:46:57,125 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2019-11-25 08:46:57,126 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 [2019-11-25 08:46:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:46:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:46:57,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:46:57,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,127 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:57,158 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:57,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:57,159 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:46:57,159 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-25 08:46:57,176 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2019-11-25 08:46:57,177 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 [2019-11-25 08:46:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:46:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-25 08:46:57,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-25 08:46:57,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-25 08:46:57,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:46:57,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:57,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-11-25 08:46:57,180 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:57,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-25 08:46:57,180 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:46:57,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:46:57,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:46:57,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:46:57,181 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,181 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:57,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:57,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:57,185 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-25 08:46:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:57,187 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-25 08:46:57,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:57,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-25 08:46:57,188 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:57,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:46:57,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:46:57,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:46:57,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:46:57,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:46:57,190 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,190 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,190 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:57,190 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:46:57,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:57,190 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:57,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:46:57,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:46:57 BoogieIcfgContainer [2019-11-25 08:46:57,200 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:46:57,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:57,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:57,202 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:57,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:55" (3/4) ... [2019-11-25 08:46:57,205 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:57,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:57,208 INFO L168 Benchmark]: Toolchain (without parser) took 2715.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 943.4 MB in the beginning and 904.8 MB in the end (delta: 38.6 MB). Peak memory consumption was 183.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,209 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:57,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -204.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.36 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. [2019-11-25 08:46:57,215 INFO L168 Benchmark]: Boogie Preprocessor took 14.41 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. [2019-11-25 08:46:57,215 INFO L168 Benchmark]: RCFGBuilder took 232.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,216 INFO L168 Benchmark]: BuchiAutomizer took 2177.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.8 MB in the end (delta: 217.6 MB). Peak memory consumption was 217.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:57,216 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 1.2 GB. Free memory is still 904.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:57,223 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -204.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.36 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. * Boogie Preprocessor took 14.41 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 232.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2177.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.8 MB in the end (delta: 217.6 MB). Peak memory consumption was 217.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.77 ms. Allocated memory is still 1.2 GB. Free memory is still 904.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function i + -1 * j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax187 hnf98 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...