./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 0.1.24-678e011 [2019-11-20 03:35:22,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:35:22,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:35:22,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:35:22,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:35:22,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:35:22,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:35:22,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:35:22,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:35:22,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:35:22,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:35:22,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:35:22,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:35:22,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:35:22,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:35:22,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:35:22,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:35:22,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:35:22,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:35:22,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:35:22,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:35:22,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:35:22,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:35:22,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:35:22,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:35:22,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:35:22,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:35:22,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:35:22,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:35:22,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:35:22,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:35:22,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:35:22,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:35:22,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:35:22,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:35:22,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:35:22,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:35:22,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:35:22,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:35:22,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:35:22,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:35:22,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 03:35:22,833 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:35:22,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:35:22,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:35:22,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:35:22,835 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:35:22,835 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 03:35:22,835 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 03:35:22,835 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 03:35:22,835 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 03:35:22,836 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 03:35:22,836 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 03:35:22,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:35:22,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:35:22,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:35:22,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:35:22,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 03:35:22,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 03:35:22,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 03:35:22,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:35:22,838 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 03:35:22,838 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:35:22,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 03:35:22,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:35:22,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:35:22,839 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 03:35:22,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:35:22,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:35:22,839 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 03:35:22,840 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 03:35:22,840 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:23,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:35:23,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:35:23,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:35:23,037 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:35:23,037 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:35:23,038 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.08.c [2019-11-20 03:35:23,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/data/af5e49d1f/2da348aaf44544f3b01a0d79bbe57f89/FLAG03babbc19 [2019-11-20 03:35:23,457 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:35:23,458 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/sv-benchmarks/c/termination-restricted-15/c.08.c [2019-11-20 03:35:23,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/data/af5e49d1f/2da348aaf44544f3b01a0d79bbe57f89/FLAG03babbc19 [2019-11-20 03:35:23,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/bin/uautomizer/data/af5e49d1f/2da348aaf44544f3b01a0d79bbe57f89 [2019-11-20 03:35:23,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:35:23,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:35:23,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:35:23,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:35:23,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:35:23,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:35:23" (1/1) ... [2019-11-20 03:35:23,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e291938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:23, skipping insertion in model container [2019-11-20 03:35:23,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:35:23" (1/1) ... [2019-11-20 03:35:23,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:35:23,915 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:35:24,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:35:24,051 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:35:24,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:35:24,134 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:35:24,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24 WrapperNode [2019-11-20 03:35:24,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:35:24,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:35:24,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:35:24,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:35:24,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:35:24,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:35:24,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:35:24,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:35:24,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... [2019-11-20 03:35:24,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:35:24,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:35:24,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:35:24,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:35:24,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:24,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:35:24,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:35:24,437 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:35:24,438 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 03:35:24,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:35:24 BoogieIcfgContainer [2019-11-20 03:35:24,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:35:24,439 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 03:35:24,440 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 03:35:24,443 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 03:35:24,444 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:35:24,444 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 03:35:23" (1/3) ... [2019-11-20 03:35:24,445 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ee8f32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:35:24, skipping insertion in model container [2019-11-20 03:35:24,446 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:35:24,446 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:35:24" (2/3) ... [2019-11-20 03:35:24,446 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ee8f32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:35:24, skipping insertion in model container [2019-11-20 03:35:24,446 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:35:24,447 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:35:24" (3/3) ... [2019-11-20 03:35:24,449 INFO L371 chiAutomizerObserver]: Analyzing ICFG c.08.c [2019-11-20 03:35:24,497 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 03:35:24,497 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 03:35:24,497 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 03:35:24,498 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:35:24,498 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:35:24,498 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 03:35:24,498 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:35:24,500 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 03:35:24,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 03:35:24,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 03:35:24,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:35:24,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:35:24,547 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 03:35:24,547 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:35:24,547 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 03:35:24,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 03:35:24,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 03:35:24,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:35:24,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:35:24,550 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 03:35:24,550 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 03:35:24,557 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-2true [2019-11-20 03:35:24,558 INFO L796 eck$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 [2019-11-20 03:35:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 03:35:24,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:24,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699206210] [2019-11-20 03:35:24,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:24,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:24,681 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-20 03:35:24,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:24,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546675256] [2019-11-20 03:35:24,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:24,706 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:24,709 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2019-11-20 03:35:24,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:24,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19193445] [2019-11-20 03:35:24,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:24,734 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:24,877 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:35:24,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:35:24,878 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:35:24,878 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:35:24,879 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:35:24,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:24,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:35:24,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:35:24,879 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-11-20 03:35:24,879 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:35:24,879 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:35:24,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:24,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:24,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,028 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:35:25,029 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:25,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:25,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:35:25,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:35:25,049 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:25,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:35:25,066 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:35:25,066 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:25,076 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:35:25,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:35:25,094 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:35:25,096 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:35:25,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:35:25,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:35:25,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:35:25,097 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:35:25,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:25,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:35:25,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:35:25,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2019-11-20 03:35:25,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:35:25,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:35:25,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,271 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:35:25,278 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,295 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 [2019-11-20 03:35:25,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:35:25,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:35:25,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:35:25,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:35:25,305 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:35:25,306 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:35:25,316 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,323 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 [2019-11-20 03:35:25,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:35:25,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:35:25,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:35:25,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:35:25,340 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:35:25,340 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:35:25,350 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,362 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 [2019-11-20 03:35:25,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:35:25,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:35:25,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:35:25,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:35:25,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:35:25,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:35:25,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:35:25,370 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:35:25,374 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 03:35:25,374 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,387 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:35:25,387 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:35:25,387 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:35:25,388 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2019-11-20 03:35:25,393 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 03:35:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:25,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:35:25,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:25,439 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:35:25,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:35:25,472 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 [2019-11-20 03:35:25,473 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-20 03:35:25,516 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. [2019-11-20 03:35:25,518 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 [2019-11-20 03:35:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:35:25,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-20 03:35:25,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-20 03:35:25,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:25,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 03:35:25,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:25,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-20 03:35:25,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:25,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2019-11-20 03:35:25,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 03:35:25,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-20 03:35:25,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 03:35:25,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-20 03:35:25,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-20 03:35:25,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:35:25,537 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 03:35:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-20 03:35:25,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-20 03:35:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 03:35:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2019-11-20 03:35:25,563 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-20 03:35:25,563 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2019-11-20 03:35:25,563 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 03:35:25,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2019-11-20 03:35:25,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 03:35:25,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:35:25,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:35:25,565 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 03:35:25,565 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 03:35:25,565 INFO L794 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 74#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 70#L12-2 [2019-11-20 03:35:25,565 INFO L796 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 70#L12-2 [2019-11-20 03:35:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 03:35:25,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:25,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443889701] [2019-11-20 03:35:25,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:25,585 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-20 03:35:25,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:25,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835640125] [2019-11-20 03:35:25,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:25,605 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:25,605 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-20 03:35:25,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:25,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84092661] [2019-11-20 03:35:25,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:25,618 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:25,632 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:35:25,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:35:25,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:35:25,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:35:25,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:35:25,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:25,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:35:25,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:35:25,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-11-20 03:35:25,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:35:25,633 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:35:25,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,699 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:35:25,699 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:25,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:35:25,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:35:25,723 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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 [2019-11-20 03:35:25,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:25,736 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:25,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:35:25,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 03:35:25,937 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:35:25,940 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:35:25,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:35:25,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:35:25,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:35:25,940 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:35:25,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:25,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:35:25,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:35:25,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2019-11-20 03:35:25,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:35:25,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:35:25,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:25,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,000 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:35:26,000 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,019 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 [2019-11-20 03:35:26,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:35:26,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:35:26,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:35:26,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:35:26,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:35:26,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,029 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,039 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 [2019-11-20 03:35:26,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:35:26,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:35:26,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:35:26,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:35:26,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:35:26,044 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:35:26,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:35:26,061 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 03:35:26,061 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:35:26,066 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:35:26,066 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:35:26,066 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 [] [2019-11-20 03:35:26,069 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 [2019-11-20 03:35:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,106 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:35:26,107 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 [2019-11-20 03:35:26,107 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-20 03:35:26,123 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. [2019-11-20 03:35:26,123 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 [2019-11-20 03:35:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 03:35:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 03:35:26,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-20 03:35:26,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-20 03:35:26,124 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 03:35:26,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,125 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-11-20 03:35:26,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 03:35:26,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2019-11-20 03:35:26,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 03:35:26,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 03:35:26,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-20 03:35:26,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:35:26,127 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-20 03:35:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-20 03:35:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-20 03:35:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 03:35:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-20 03:35:26,128 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-20 03:35:26,128 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-20 03:35:26,129 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 03:35:26,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-20 03:35:26,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 03:35:26,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:35:26,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:35:26,130 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-11-20 03:35:26,130 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 03:35:26,130 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 122#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 119#L12-2 assume !(main_~j~0 <= main_~i~0 - 1); 120#L12-3 main_~i~0 := main_~i~0 - 1; 123#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 118#L12-2 [2019-11-20 03:35:26,130 INFO L796 eck$LassoCheckResult]: Loop: 118#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 118#L12-2 [2019-11-20 03:35:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2019-11-20 03:35:26,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:26,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029291436] [2019-11-20 03:35:26,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:35:26,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029291436] [2019-11-20 03:35:26,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:35:26,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 03:35:26,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165122278] [2019-11-20 03:35:26,191 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:35:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-20 03:35:26,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:35:26,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401449260] [2019-11-20 03:35:26,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:35:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:35:26,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:35:26,209 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:35:26,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:35:26,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:35:26,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:35:26,209 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 03:35:26,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:35:26,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:35:26,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-11-20 03:35:26,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:35:26,210 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:35:26,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,263 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:35:26,263 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:26,280 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,284 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 03:35:26,284 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 03:35:26,299 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 03:35:26,319 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,502 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 03:35:26,504 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:35:26,505 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:35:26,505 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:35:26,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:35:26,505 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:35:26,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:35:26,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:35:26,506 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2019-11-20 03:35:26,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:35:26,506 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:35:26,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:35:26,563 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:35:26,563 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,578 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 [2019-11-20 03:35:26,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:35:26,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:35:26,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:35:26,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:35:26,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:35:26,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:35:26,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:35:26,584 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:35:26,589 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 03:35:26,589 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_53a521d6-2faa-40b2-bb1e-5957a8c809e3/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) [2019-11-20 03:35:26,610 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:35:26,610 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 03:35:26,610 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:35:26,611 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 [] [2019-11-20 03:35:26,614 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 [2019-11-20 03:35:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,649 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:35:26,649 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 [2019-11-20 03:35:26,650 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 03:35:26,665 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. [2019-11-20 03:35:26,666 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 [2019-11-20 03:35:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 03:35:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 03:35:26,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 03:35:26,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,667 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:35:26,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,698 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:35:26,699 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 [2019-11-20 03:35:26,699 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 03:35:26,712 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. [2019-11-20 03:35:26,713 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 [2019-11-20 03:35:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 03:35:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 03:35:26,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 03:35:26,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,714 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:35:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:35:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:35:26,749 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:35:26,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:35:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:35:26,750 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 [2019-11-20 03:35:26,750 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 03:35:26,776 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. [2019-11-20 03:35:26,777 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 [2019-11-20 03:35:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 03:35:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 03:35:26,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 03:35:26,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-20 03:35:26,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 03:35:26,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:35:26,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-11-20 03:35:26,779 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:35:26,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-11-20 03:35:26,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 03:35:26,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 03:35:26,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 03:35:26,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:35:26,780 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:35:26,780 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:35:26,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:35:26,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 03:35:26,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 03:35:26,784 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-20 03:35:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:35:26,786 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-20 03:35:26,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 03:35:26,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-20 03:35:26,787 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:35:26,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 03:35:26,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 03:35:26,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 03:35:26,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 03:35:26,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:35:26,787 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:35:26,787 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:35:26,787 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:35:26,787 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 03:35:26,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 03:35:26,788 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:35:26,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 03:35:26,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 03:35:26 BoogieIcfgContainer [2019-11-20 03:35:26,793 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 03:35:26,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:35:26,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:35:26,793 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:35:26,797 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:35:24" (3/4) ... [2019-11-20 03:35:26,799 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 03:35:26,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:35:26,801 INFO L168 Benchmark]: Toolchain (without parser) took 2915.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.5 MB in the beginning and 907.2 MB in the end (delta: 44.3 MB). Peak memory consumption was 211.0 MB. Max. memory is 11.5 GB. [2019-11-20 03:35:26,801 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:35:26,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -207.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 03:35:26,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:35:26,803 INFO L168 Benchmark]: Boogie Preprocessor took 20.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:35:26,804 INFO L168 Benchmark]: RCFGBuilder took 244.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2019-11-20 03:35:26,804 INFO L168 Benchmark]: BuchiAutomizer took 2353.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.2 MB in the end (delta: 238.0 MB). Peak memory consumption was 238.0 MB. Max. memory is 11.5 GB. [2019-11-20 03:35:26,804 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:35:26,808 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 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.5 MB in the beginning and 1.2 GB in the end (delta: -207.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 244.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2353.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.2 MB in the end (delta: 238.0 MB). Peak memory consumption was 238.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 907.2 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 2.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 37ms 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...