./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.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_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:51:25,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:51:25,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:51:25,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:51:25,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:51:25,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:51:25,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:51:25,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:51:25,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:51:25,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:51:25,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:51:25,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:51:25,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:51:25,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:51:25,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:51:25,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:51:25,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:51:25,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:51:25,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:51:25,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:51:25,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:51:25,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:51:25,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:51:25,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:51:25,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:51:25,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:51:25,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:51:25,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:51:25,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:51:25,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:51:25,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:51:25,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:51:25,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:51:25,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:51:25,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:51:25,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:51:25,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:51:25,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:51:25,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:51:25,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:51:25,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:51:25,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:51:25,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:51:25,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:51:25,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:51:25,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:51:25,882 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:51:25,882 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:51:25,883 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:51:25,883 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:51:25,883 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:51:25,883 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:51:25,884 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:51:25,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:51:25,884 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:51:25,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:51:25,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:51:25,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:51:25,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:51:25,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:51:25,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:51:25,886 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:51:25,886 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:51:25,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:51:25,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:51:25,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:51:25,887 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:51:25,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:51:25,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:51:25,888 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:51:25,889 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:51:25,890 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_48786b20-b1ce-4646-b8c4-bc952458293f/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 -> 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 [2019-11-25 08:51:26,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:51:26,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:51:26,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:51:26,107 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:51:26,108 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:51:26,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2019-11-25 08:51:26,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/data/3209fb0f3/f44594ea7f344dc0a406a8ffa6b783d7/FLAG429d07151 [2019-11-25 08:51:26,661 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:51:26,662 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2019-11-25 08:51:26,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/data/3209fb0f3/f44594ea7f344dc0a406a8ffa6b783d7/FLAG429d07151 [2019-11-25 08:51:27,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/bin/uautomizer/data/3209fb0f3/f44594ea7f344dc0a406a8ffa6b783d7 [2019-11-25 08:51:27,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:51:27,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:51:27,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:27,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:51:27,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:51:27,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c9a9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27, skipping insertion in model container [2019-11-25 08:51:27,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:51:27,059 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:51:27,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:27,284 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:51:27,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:27,389 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:51:27,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27 WrapperNode [2019-11-25 08:51:27,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:27,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:27,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:51:27,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:51:27,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:27,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:51:27,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:51:27,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:51:27,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... [2019-11-25 08:51:27,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:51:27,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:51:27,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:51:27,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:51:27,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:27,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:51:27,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:51:27,739 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:51:27,739 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:51:27,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:27 BoogieIcfgContainer [2019-11-25 08:51:27,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:51:27,741 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:51:27,741 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:51:27,745 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:51:27,746 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:27,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:51:27" (1/3) ... [2019-11-25 08:51:27,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b5a7d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:51:27, skipping insertion in model container [2019-11-25 08:51:27,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:27,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:27" (2/3) ... [2019-11-25 08:51:27,750 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4b5a7d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:51:27, skipping insertion in model container [2019-11-25 08:51:27,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:27,750 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:27" (3/3) ... [2019-11-25 08:51:27,752 INFO L371 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined.c [2019-11-25 08:51:27,822 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:51:27,822 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:51:27,822 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:51:27,822 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:51:27,823 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:51:27,823 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:51:27,823 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:51:27,824 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:51:27,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:51:27,866 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2019-11-25 08:51:27,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:27,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:27,873 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:51:27,874 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:27,874 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:51:27,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:51:27,876 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2019-11-25 08:51:27,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:27,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:27,876 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:51:27,877 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:27,886 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 4#L13-2true [2019-11-25 08:51:27,886 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 4#L13-2true [2019-11-25 08:51:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:27,893 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:51:27,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:27,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426993100] [2019-11-25 08:51:27,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,029 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-11-25 08:51:28,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:28,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318571067] [2019-11-25 08:51:28,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,060 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:28,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:28,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:51:28,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:28,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642403458] [2019-11-25 08:51:28,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,089 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:28,198 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-11-25 08:51:28,279 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:28,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:28,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:28,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:28,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:28,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:28,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:28,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:28,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2019-11-25 08:51:28,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:28,283 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:28,309 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 08:51:28,334 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 08:51:28,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:28,352 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 08:51:28,495 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:28,497 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:28,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:28,513 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:28,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:28,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:28,549 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:28,551 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:28,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:28,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:28,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:28,552 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:28,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:28,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:28,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:28,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2019-11-25 08:51:28,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:28,553 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:28,555 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 08:51:28,582 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 08:51:28,587 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 08:51:28,594 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 08:51:28,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:28,721 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:28,729 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 08:51:28,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:28,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:28,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:28,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:28,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:28,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:28,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:28,742 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:28,748 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:28,748 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:28,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:28,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:28,757 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:28,757 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:51:28,762 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:28,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:28,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:28,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:28,828 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:51:28,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:28,829 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 08:51:28,849 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 08:51:28,850 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2019-11-25 08:51:28,911 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 23 states and 39 transitions. Complement of second has 5 states. [2019-11-25 08:51:28,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:51:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:51:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-11-25 08:51:28,916 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2019-11-25 08:51:28,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:28,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-25 08:51:28,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:28,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:51:28,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:28,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2019-11-25 08:51:28,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:51:28,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2019-11-25 08:51:28,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:51:28,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-25 08:51:28,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2019-11-25 08:51:28,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:28,932 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2019-11-25 08:51:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2019-11-25 08:51:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-25 08:51:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:51:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2019-11-25 08:51:28,964 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2019-11-25 08:51:28,964 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2019-11-25 08:51:28,964 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:51:28,964 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2019-11-25 08:51:28,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:51:28,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:28,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:28,966 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:51:28,966 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:51:28,967 INFO L794 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2019-11-25 08:51:28,967 INFO L796 eck$LassoCheckResult]: Loop: 63#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 65#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2019-11-25 08:51:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:28,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-11-25 08:51:28,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:28,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366483058] [2019-11-25 08:51:28,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,978 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:28,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2019-11-25 08:51:28,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:28,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408239249] [2019-11-25 08:51:28,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:28,991 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:28,992 INFO L82 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2019-11-25 08:51:28,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:28,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751432814] [2019-11-25 08:51:28,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:29,005 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:29,056 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:29,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:29,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:29,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:29,056 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:29,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:29,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:29,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2019-11-25 08:51:29,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:29,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:29,059 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 08:51:29,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:29,112 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 08:51:29,117 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 08:51:29,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:29,199 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:29,199 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:29,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:29,214 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:29,214 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_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:29,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:29,228 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:29,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:51:29,319 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:29,321 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:29,321 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:29,321 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:29,321 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:29,321 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:29,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,322 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:29,322 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:29,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2019-11-25 08:51:29,322 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:29,322 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:29,324 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 08:51:29,335 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 08:51:29,348 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 08:51:29,355 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 08:51:29,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:29,456 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:29,456 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:29,463 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 08:51:29,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:29,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:29,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:29,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:29,471 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:29,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:29,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,492 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 08:51:29,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:29,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:29,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:29,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:29,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:29,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:29,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:29,503 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:29,515 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:29,515 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:29,533 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:29,533 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:29,533 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:51:29,538 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:29,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:29,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:29,578 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:51:29,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:29,606 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 08:51:29,606 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 08:51:29,606 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-25 08:51:29,647 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 7 states. [2019-11-25 08:51:29,647 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 [2019-11-25 08:51:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:51:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-25 08:51:29,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-25 08:51:29,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:29,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:51:29,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:29,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-25 08:51:29,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:29,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2019-11-25 08:51:29,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:51:29,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2019-11-25 08:51:29,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:51:29,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-25 08:51:29,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2019-11-25 08:51:29,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:29,654 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-25 08:51:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2019-11-25 08:51:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-25 08:51:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:51:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2019-11-25 08:51:29,657 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-25 08:51:29,657 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-11-25 08:51:29,657 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:51:29,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2019-11-25 08:51:29,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:51:29,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:29,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:29,659 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-11-25 08:51:29,659 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:51:29,659 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 127#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 128#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2019-11-25 08:51:29,660 INFO L796 eck$LassoCheckResult]: Loop: 130#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 131#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2019-11-25 08:51:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2019-11-25 08:51:29,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:29,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670341354] [2019-11-25 08:51:29,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:29,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670341354] [2019-11-25 08:51:29,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:29,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:51:29,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359631566] [2019-11-25 08:51:29,766 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:51:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2019-11-25 08:51:29,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:29,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194190283] [2019-11-25 08:51:29,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:29,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:29,855 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:29,855 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:29,855 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:29,856 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:29,856 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:51:29,856 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:29,856 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:29,856 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:29,856 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2019-11-25 08:51:29,856 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:29,857 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:29,858 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 08:51:29,865 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 08:51:29,885 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 08:51:29,892 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 08:51:29,897 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 08:51:29,982 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:29,982 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:29,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:29,988 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 08:51:29,994 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:51:29,995 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_48786b20-b1ce-4646-b8c4-bc952458293f/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) [2019-11-25 08:51:30,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:51:30,013 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 /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) [2019-11-25 08:51:30,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:51:30,034 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:30,120 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:51:30,122 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:51:30,122 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:51:30,122 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:51:30,122 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:51:30,122 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:51:30,123 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:30,123 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:51:30,123 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:51:30,123 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2019-11-25 08:51:30,123 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:51:30,123 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:51:30,124 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 08:51:30,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:51:30,134 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 08:51:30,139 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 08:51:30,147 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 08:51:30,328 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-11-25 08:51:30,378 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:51:30,379 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:30,383 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 08:51:30,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:30,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:30,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:30,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:30,391 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:51:30,391 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:51:30,399 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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 08:51:30,412 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 08:51:30,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:51:30,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:51:30,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:51:30,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:51:30,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:51:30,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:51:30,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:51:30,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:51:30,427 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:51:30,427 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48786b20-b1ce-4646-b8c4-bc952458293f/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:51:30,431 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:51:30,431 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:51:30,431 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:51:30,431 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-25 08:51:30,434 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:51:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:30,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:51:30,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:30,483 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:51:30,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:51:30,504 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 08:51:30,504 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 08:51:30,505 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-25 08:51:30,532 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 43 states and 65 transitions. Complement of second has 7 states. [2019-11-25 08:51:30,533 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 [2019-11-25 08:51:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:51:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-25 08:51:30,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-25 08:51:30,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:30,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-25 08:51:30,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:30,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:51:30,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:51:30,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2019-11-25 08:51:30,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:51:30,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2019-11-25 08:51:30,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:51:30,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-25 08:51:30,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2019-11-25 08:51:30,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:51:30,541 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2019-11-25 08:51:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2019-11-25 08:51:30,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2019-11-25 08:51:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-25 08:51:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-11-25 08:51:30,544 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-11-25 08:51:30,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:51:30,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:51:30,548 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 5 states. [2019-11-25 08:51:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:30,602 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2019-11-25 08:51:30,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:51:30,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-11-25 08:51:30,604 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:51:30,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-11-25 08:51:30,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:51:30,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:51:30,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:51:30,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:51:30,605 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:30,605 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:30,605 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:51:30,605 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:51:30,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:51:30,606 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:51:30,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:51:30,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:51:30 BoogieIcfgContainer [2019-11-25 08:51:30,612 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:51:30,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:51:30,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:51:30,613 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:51:30,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:27" (3/4) ... [2019-11-25 08:51:30,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:51:30,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:51:30,619 INFO L168 Benchmark]: Toolchain (without parser) took 3599.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 950.1 MB in the beginning and 885.0 MB in the end (delta: 65.1 MB). Peak memory consumption was 214.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:30,619 INFO L168 Benchmark]: CDTParser took 0.23 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 08:51:30,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:30,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.76 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 08:51:30,621 INFO L168 Benchmark]: Boogie Preprocessor took 22.72 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 08:51:30,622 INFO L168 Benchmark]: RCFGBuilder took 291.54 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:30,623 INFO L168 Benchmark]: BuchiAutomizer took 2871.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 885.0 MB in the end (delta: 240.7 MB). Peak memory consumption was 240.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:30,624 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 1.2 GB. Free memory is still 885.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:30,627 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 366.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -194.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.76 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 22.72 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 291.54 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2871.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 885.0 MB in the end (delta: 240.7 MB). Peak memory consumption was 240.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.49 ms. Allocated memory is still 1.2 GB. Free memory is still 885.0 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, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...