./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Sunset.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_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 a80d10d797b477078e6dad6d87594a2a0aea1065 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 05:36:37,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:36:37,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:36:37,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:36:37,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:36:37,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:36:37,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:36:37,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:36:37,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:36:37,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:36:37,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:36:37,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:36:37,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:36:37,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:36:37,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:36:37,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:36:37,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:36:37,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:36:37,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:36:37,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:36:37,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:36:37,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:36:37,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:36:37,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:36:37,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:36:37,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:36:37,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:36:37,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:36:37,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:36:37,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:36:37,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:36:37,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:36:37,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:36:37,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:36:37,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:36:37,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:36:37,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:36:37,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:36:37,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:36:37,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:36:37,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:36:37,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 05:36:37,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:36:37,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:36:37,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:36:37,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:36:37,924 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:36:37,924 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 05:36:37,924 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 05:36:37,924 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 05:36:37,925 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 05:36:37,925 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 05:36:37,925 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 05:36:37,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:36:37,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:36:37,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:36:37,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:36:37,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 05:36:37,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 05:36:37,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 05:36:37,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 05:36:37,927 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 05:36:37,927 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:36:37,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 05:36:37,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:36:37,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:36:37,928 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 05:36:37,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:36:37,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 05:36:37,928 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 05:36:37,929 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 05:36:37,929 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_113b7067-c889-459e-a923-ccadb1fc10fd/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 -> a80d10d797b477078e6dad6d87594a2a0aea1065 [2019-11-20 05:36:38,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:36:38,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:36:38,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:36:38,161 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:36:38,162 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:36:38,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2019-11-20 05:36:38,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/data/e6542ece3/ca72dfd52e984987994362f6b6b4d2b1/FLAG12812fe8c [2019-11-20 05:36:38,667 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:36:38,668 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/sv-benchmarks/c/termination-restricted-15/Sunset.c [2019-11-20 05:36:38,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/data/e6542ece3/ca72dfd52e984987994362f6b6b4d2b1/FLAG12812fe8c [2019-11-20 05:36:39,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/data/e6542ece3/ca72dfd52e984987994362f6b6b4d2b1 [2019-11-20 05:36:39,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:36:39,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 05:36:39,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:36:39,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:36:39,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:36:39,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203f0c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39, skipping insertion in model container [2019-11-20 05:36:39,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,112 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:36:39,125 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:36:39,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:36:39,266 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:36:39,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:36:39,365 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:36:39,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39 WrapperNode [2019-11-20 05:36:39,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:36:39,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 05:36:39,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 05:36:39,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 05:36:39,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 05:36:39,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:36:39,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:36:39,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:36:39,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... [2019-11-20 05:36:39,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:36:39,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:36:39,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:36:39,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:36:39,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:36:39,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:36:39,701 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:36:39,701 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 05:36:39,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:36:39 BoogieIcfgContainer [2019-11-20 05:36:39,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:36:39,703 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 05:36:39,704 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 05:36:39,707 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 05:36:39,708 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:36:39,709 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 05:36:39" (1/3) ... [2019-11-20 05:36:39,711 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@271355c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:36:39, skipping insertion in model container [2019-11-20 05:36:39,711 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:36:39,711 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:36:39" (2/3) ... [2019-11-20 05:36:39,712 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@271355c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 05:36:39, skipping insertion in model container [2019-11-20 05:36:39,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 05:36:39,712 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:36:39" (3/3) ... [2019-11-20 05:36:39,714 INFO L371 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2019-11-20 05:36:39,770 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 05:36:39,770 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 05:36:39,770 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 05:36:39,770 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:36:39,771 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:36:39,771 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 05:36:39,771 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:36:39,772 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 05:36:39,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 05:36:39,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:36:39,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:39,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:39,820 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 05:36:39,820 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:39,821 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 05:36:39,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 05:36:39,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:36:39,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:39,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:39,823 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 05:36:39,823 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:39,832 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2019-11-20 05:36:39,833 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 > 10); 3#L10true assume 25 == main_~i~0;main_~i~0 := 30; 8#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 5#L13-1true [2019-11-20 05:36:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 05:36:39,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:39,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714849985] [2019-11-20 05:36:39,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:39,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2019-11-20 05:36:39,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:39,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228992646] [2019-11-20 05:36:39,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:39,950 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2019-11-20 05:36:39,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:39,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933721403] [2019-11-20 05:36:39,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:39,964 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:40,059 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:40,060 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:40,061 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:40,061 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:40,061 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:40,061 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,061 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:40,061 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:40,062 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2019-11-20 05:36:40,062 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:40,062 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:40,093 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 05:36:40,105 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 05:36:40,110 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 05:36:40,219 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:40,220 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:40,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:40,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:40,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:40,241 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_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:40,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:40,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:40,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:40,259 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_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:40,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:40,265 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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) [2019-11-20 05:36:40,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:40,285 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,295 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:40,297 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:40,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:40,298 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:40,298 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:40,298 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:40,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:40,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:40,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2019-11-20 05:36:40,300 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:40,300 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:40,302 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 05:36:40,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:40,318 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 05:36:40,390 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:40,394 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:40,409 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 05:36:40,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:40,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:40,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:40,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:40,419 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:40,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,426 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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) [2019-11-20 05:36:40,442 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 05:36:40,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:40,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:40,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:40,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:40,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:40,448 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:40,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,453 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:40,458 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:40,458 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:40,478 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:40,479 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:40,479 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:40,479 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2019-11-20 05:36:40,485 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:40,536 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:40,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:40,548 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:40,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:40,606 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 [2019-11-20 05:36:40,608 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-11-20 05:36:40,662 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 6 states. [2019-11-20 05:36:40,663 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 [2019-11-20 05:36:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:36:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 05:36:40,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-20 05:36:40,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:40,669 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:40,703 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:40,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:40,713 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:40,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:40,729 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 05:36:40,730 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:36:40,730 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2019-11-20 05:36:40,777 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 28 states and 38 transitions. Complement of second has 8 states. [2019-11-20 05:36:40,777 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 05:36:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:36:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-11-20 05:36:40,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-20 05:36:40,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:40,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 05:36:40,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:40,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-20 05:36:40,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:40,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2019-11-20 05:36:40,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:36:40,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2019-11-20 05:36:40,791 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 05:36:40,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 05:36:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2019-11-20 05:36:40,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:40,793 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2019-11-20 05:36:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2019-11-20 05:36:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-20 05:36:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 05:36:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2019-11-20 05:36:40,820 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-20 05:36:40,821 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-20 05:36:40,821 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 05:36:40,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2019-11-20 05:36:40,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:36:40,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:40,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:40,823 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 05:36:40,823 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:40,823 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 127#L13-1 assume !!(main_~i~0 > 10); 130#L10 assume !(25 == main_~i~0); 123#L10-2 [2019-11-20 05:36:40,823 INFO L796 eck$LassoCheckResult]: Loop: 123#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 128#L13-1 assume !!(main_~i~0 > 10); 122#L10 assume 25 == main_~i~0;main_~i~0 := 30; 123#L10-2 [2019-11-20 05:36:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:40,824 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-20 05:36:40,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:40,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494121260] [2019-11-20 05:36:40,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:40,832 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:40,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2019-11-20 05:36:40,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:40,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973361450] [2019-11-20 05:36:40,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:40,842 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2019-11-20 05:36:40,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:40,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190098571] [2019-11-20 05:36:40,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:40,854 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:40,890 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:40,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:40,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:40,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:40,891 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:40,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:40,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:40,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2019-11-20 05:36:40,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:40,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:40,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:40,898 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 05:36:40,903 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 05:36:40,963 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:40,963 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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) [2019-11-20 05:36:40,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:40,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:40,977 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:40,977 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: [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:40,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:40,993 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:40,998 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:40,999 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:41,018 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:41,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:41,050 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:41,053 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:41,053 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:41,053 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:41,053 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:41,053 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:41,053 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,054 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:41,054 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:41,054 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2019-11-20 05:36:41,054 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:41,054 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:41,055 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 05:36:41,063 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 05:36:41,067 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 05:36:41,140 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:41,140 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,153 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 05:36:41,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:41,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:41,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:41,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:41,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:41,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 05:36:41,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,185 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 05:36:41,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:41,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:41,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:41,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:41,195 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:41,195 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 05:36:41,200 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,209 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 05:36:41,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:41,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:41,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:41,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:41,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:41,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:41,220 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:41,223 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:41,224 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 [2019-11-20 05:36:41,241 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:41,241 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:41,241 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:41,241 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2019-11-20 05:36:41,244 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:36:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:41,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,295 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:41,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:41,305 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 05:36:41,306 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 05:36:41,306 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-20 05:36:41,335 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 5 states. [2019-11-20 05:36:41,336 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 05:36:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-20 05:36:41,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-20 05:36:41,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:41,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:36:41,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:41,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-20 05:36:41,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:41,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2019-11-20 05:36:41,340 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 05:36:41,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2019-11-20 05:36:41,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 05:36:41,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-20 05:36:41,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2019-11-20 05:36:41,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:41,342 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2019-11-20 05:36:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2019-11-20 05:36:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-20 05:36:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 05:36:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-11-20 05:36:41,345 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-11-20 05:36:41,345 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-11-20 05:36:41,346 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 05:36:41,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2019-11-20 05:36:41,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 05:36:41,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:41,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:41,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:36:41,352 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:41,353 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 198#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 199#L13-1 [2019-11-20 05:36:41,353 INFO L796 eck$LassoCheckResult]: Loop: 199#L13-1 assume !!(main_~i~0 > 10); 200#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 199#L13-1 [2019-11-20 05:36:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2019-11-20 05:36:41,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:41,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867844747] [2019-11-20 05:36:41,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,438 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 05:36:41,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867844747] [2019-11-20 05:36:41,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:36:41,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 05:36:41,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574395995] [2019-11-20 05:36:41,445 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 05:36:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2019-11-20 05:36:41,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:41,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52688671] [2019-11-20 05:36:41,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:41,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:41,497 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:41,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:41,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:41,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:41,497 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:41,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,498 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:41,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:41,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2019-11-20 05:36:41,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:41,498 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:41,499 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 05:36:41,507 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 05:36:41,529 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 05:36:41,595 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:41,595 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:41,610 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 [2019-11-20 05:36:41,616 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:41,616 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_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:41,639 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:41,661 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:41,671 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:41,671 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:41,671 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:41,671 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:41,671 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:41,671 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,672 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:41,672 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:41,672 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2019-11-20 05:36:41,672 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:41,672 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:41,673 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 05:36:41,689 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 05:36:41,694 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 05:36:41,756 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:41,756 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/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 05:36:41,779 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 05:36:41,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:41,781 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:41,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:41,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:41,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:41,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:41,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,787 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:41,790 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:41,791 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:41,810 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:41,810 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:41,810 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:41,810 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2019-11-20 05:36:41,813 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:41,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,851 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:41,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:41,865 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 05:36:41,866 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 05:36:41,866 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-20 05:36:41,898 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 42 states and 66 transitions. Complement of second has 5 states. [2019-11-20 05:36:41,899 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 05:36:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:36:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:41,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 05:36:41,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:41,901 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:41,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:41,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:41,943 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:41,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:41,960 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 05:36:41,961 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:36:41,961 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-20 05:36:41,999 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 44 states and 70 transitions. Complement of second has 7 states. [2019-11-20 05:36:42,001 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 [2019-11-20 05:36:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 05:36:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-20 05:36:42,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 05:36:42,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 05:36:42,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 05:36:42,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2019-11-20 05:36:42,005 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-20 05:36:42,006 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2019-11-20 05:36:42,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-20 05:36:42,007 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-11-20 05:36:42,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2019-11-20 05:36:42,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:42,007 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2019-11-20 05:36:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2019-11-20 05:36:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-11-20 05:36:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 05:36:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2019-11-20 05:36:42,021 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2019-11-20 05:36:42,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:36:42,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:36:42,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:36:42,025 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 3 states. [2019-11-20 05:36:42,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:36:42,049 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-11-20 05:36:42,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:36:42,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2019-11-20 05:36:42,053 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 05:36:42,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2019-11-20 05:36:42,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-20 05:36:42,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-20 05:36:42,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2019-11-20 05:36:42,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:42,054 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-20 05:36:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2019-11-20 05:36:42,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-11-20 05:36:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 05:36:42,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-11-20 05:36:42,059 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-20 05:36:42,060 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-20 05:36:42,060 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 05:36:42,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2019-11-20 05:36:42,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 05:36:42,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:42,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:42,064 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-20 05:36:42,064 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:42,065 INFO L794 eck$LassoCheckResult]: Stem: 441#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 442#L13-1 assume !!(main_~i~0 > 10); 453#L10 assume !(25 == main_~i~0); 457#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 437#L10 assume !(25 == main_~i~0); 438#L10-2 [2019-11-20 05:36:42,065 INFO L796 eck$LassoCheckResult]: Loop: 438#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 443#L13-1 assume !!(main_~i~0 > 10); 444#L10 assume 25 == main_~i~0;main_~i~0 := 30; 438#L10-2 [2019-11-20 05:36:42,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,065 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2019-11-20 05:36:42,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845335204] [2019-11-20 05:36:42,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,083 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2019-11-20 05:36:42,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39777189] [2019-11-20 05:36:42,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,099 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2019-11-20 05:36:42,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039652608] [2019-11-20 05:36:42,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,112 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,137 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:42,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:42,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:42,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:42,137 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:42,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:42,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:42,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2019-11-20 05:36:42,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:42,138 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:42,140 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 05:36:42,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:42,151 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 05:36:42,201 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:42,201 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:42,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:42,209 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:42,226 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,232 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:42,235 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:42,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:42,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:42,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:42,235 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:42,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:42,236 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:42,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2019-11-20 05:36:42,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:42,236 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:42,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:42,245 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 05:36:42,254 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 05:36:42,315 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:42,315 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,321 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 05:36:42,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:42,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:42,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:42,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:42,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:42,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:42,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:42,328 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:42,332 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:42,332 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,336 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:42,336 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:42,336 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:42,337 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2019-11-20 05:36:42,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:36:42,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,384 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,396 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 05:36:42,396 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 05:36:42,396 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-20 05:36:42,421 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2019-11-20 05:36:42,422 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 05:36:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:42,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:36:42,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,423 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,448 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,458 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 05:36:42,459 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:36:42,459 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-20 05:36:42,516 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2019-11-20 05:36:42,516 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 05:36:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:42,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:36:42,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,517 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,556 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,566 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 05:36:42,567 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:36:42,567 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-20 05:36:42,593 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 31 states and 47 transitions. Complement of second has 6 states. [2019-11-20 05:36:42,594 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 05:36:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-20 05:36:42,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 05:36:42,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 05:36:42,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-20 05:36:42,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2019-11-20 05:36:42,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 05:36:42,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2019-11-20 05:36:42,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 05:36:42,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-20 05:36:42,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2019-11-20 05:36:42,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:42,599 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2019-11-20 05:36:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2019-11-20 05:36:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2019-11-20 05:36:42,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 05:36:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2019-11-20 05:36:42,600 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-20 05:36:42,600 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-20 05:36:42,600 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 05:36:42,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2019-11-20 05:36:42,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 05:36:42,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:42,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:42,602 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:36:42,602 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:42,602 INFO L794 eck$LassoCheckResult]: Stem: 664#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 665#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2019-11-20 05:36:42,602 INFO L796 eck$LassoCheckResult]: Loop: 666#L13-1 assume !!(main_~i~0 > 10); 660#L10 assume !(25 == main_~i~0); 661#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2019-11-20 05:36:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,603 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2019-11-20 05:36:42,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256235130] [2019-11-20 05:36:42,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,610 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,610 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2019-11-20 05:36:42,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174885823] [2019-11-20 05:36:42,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,616 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2019-11-20 05:36:42,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401001100] [2019-11-20 05:36:42,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,624 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,643 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:42,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:42,644 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:42,644 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:42,644 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:42,644 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:42,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:42,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2019-11-20 05:36:42,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:42,644 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:42,645 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 05:36:42,655 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 05:36:42,658 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 05:36:42,745 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:42,745 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:42,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:42,750 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:42,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:42,764 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,783 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:42,785 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:42,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:42,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:42,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:42,785 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:42,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:42,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:42,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2019-11-20 05:36:42,786 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:42,786 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:42,787 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 05:36:42,789 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 05:36:42,798 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 05:36:42,890 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:42,890 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:42,898 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 05:36:42,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:42,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:42,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:42,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,904 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:42,905 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 05:36:42,908 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,913 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 05:36:42,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:42,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:42,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:42,914 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 05:36:42,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:42,916 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 05:36:42,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:42,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:42,921 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 05:36:42,921 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:42,924 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:42,924 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:42,924 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:42,924 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 05:36:42,926 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:36:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:42,949 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:36:42,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:42,963 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 05:36:42,964 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 05:36:42,964 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 05:36:42,980 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2019-11-20 05:36:42,981 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 05:36:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:42,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 05:36:42,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 05:36:42,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 05:36:42,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:42,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2019-11-20 05:36:42,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 05:36:42,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2019-11-20 05:36:42,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 05:36:42,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 05:36:42,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2019-11-20 05:36:42,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:42,984 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2019-11-20 05:36:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2019-11-20 05:36:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-11-20 05:36:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 05:36:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-11-20 05:36:42,986 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-11-20 05:36:42,987 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-11-20 05:36:42,987 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 05:36:42,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2019-11-20 05:36:42,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 05:36:42,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:42,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:42,988 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-11-20 05:36:42,988 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 05:36:42,989 INFO L794 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 754#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 756#L13-1 assume !!(main_~i~0 > 10); 757#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2019-11-20 05:36:42,989 INFO L796 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2019-11-20 05:36:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2019-11-20 05:36:42,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892364162] [2019-11-20 05:36:42,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:42,998 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:42,999 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2019-11-20 05:36:42,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:42,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242952851] [2019-11-20 05:36:42,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,004 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2019-11-20 05:36:43,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928638584] [2019-11-20 05:36:43,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,014 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,037 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:43,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:43,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:43,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:43,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:43,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:43,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:43,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2019-11-20 05:36:43,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:43,039 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:43,040 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 05:36:43,055 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 05:36:43,058 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 05:36:43,143 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:43,143 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:43,147 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:43,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:43,175 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,191 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:43,193 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:43,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:43,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:43,193 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:43,193 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:43,193 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,193 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:43,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:43,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2019-11-20 05:36:43,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:43,193 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:43,194 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 05:36:43,210 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 05:36:43,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:43,276 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:43,277 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,280 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 05:36:43,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:43,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:43,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:43,282 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 05:36:43,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:43,283 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 05:36:43,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:43,286 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:43,288 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 05:36:43,288 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,291 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:43,291 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:43,291 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:43,291 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 05:36:43,293 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:36:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,319 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,328 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 05:36:43,328 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 05:36:43,329 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-20 05:36:43,346 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2019-11-20 05:36:43,347 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 05:36:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:43,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 05:36:43,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,347 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:43,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,375 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,387 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 05:36:43,387 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:36:43,387 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-20 05:36:43,398 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2019-11-20 05:36:43,398 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 05:36:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:43,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 05:36:43,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,399 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,426 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,441 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 05:36:43,441 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 05:36:43,441 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-11-20 05:36:43,456 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 37 states and 52 transitions. Complement of second has 4 states. [2019-11-20 05:36:43,458 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 05:36:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 05:36:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-20 05:36:43,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 05:36:43,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-20 05:36:43,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-20 05:36:43,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2019-11-20 05:36:43,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 05:36:43,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2019-11-20 05:36:43,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 05:36:43,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 05:36:43,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2019-11-20 05:36:43,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:43,462 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-20 05:36:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2019-11-20 05:36:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2019-11-20 05:36:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 05:36:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-11-20 05:36:43,464 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 05:36:43,464 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 05:36:43,464 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 05:36:43,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-11-20 05:36:43,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 05:36:43,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:43,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:43,465 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:36:43,465 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2019-11-20 05:36:43,465 INFO L794 eck$LassoCheckResult]: Stem: 1006#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1007#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2019-11-20 05:36:43,466 INFO L796 eck$LassoCheckResult]: Loop: 1008#L13-1 assume !!(main_~i~0 > 10); 1005#L10 assume !(25 == main_~i~0); 1004#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1011#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2019-11-20 05:36:43,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,466 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2019-11-20 05:36:43,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025730686] [2019-11-20 05:36:43,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2019-11-20 05:36:43,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712874564] [2019-11-20 05:36:43,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2019-11-20 05:36:43,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029462831] [2019-11-20 05:36:43,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,492 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,522 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:43,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:43,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:43,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:43,522 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:43,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,522 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:43,522 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:43,522 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2019-11-20 05:36:43,522 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:43,523 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:43,523 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 05:36:43,528 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 05:36:43,530 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 05:36:43,574 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:43,574 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:43,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:43,579 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:43,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:43,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:43,606 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:43,606 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:43,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:43,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:43,607 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:43,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:43,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:43,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2019-11-20 05:36:43,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:43,608 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:43,608 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 05:36:43,619 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 05:36:43,623 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 05:36:43,672 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:43,673 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,680 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 05:36:43,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:43,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:43,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:43,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:43,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:43,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:43,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:43,685 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:43,687 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:43,687 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:43,691 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:43,691 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:43,691 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:43,691 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2019-11-20 05:36:43,692 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:36:43,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:43,736 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 05:36:43,736 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-11-20 05:36:43,766 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 7 states. [2019-11-20 05:36:43,767 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 [2019-11-20 05:36:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 05:36:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 05:36:43,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 05:36:43,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,768 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:43,847 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 05:36:43,847 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-11-20 05:36:43,892 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 48 states and 64 transitions. Complement of second has 9 states. [2019-11-20 05:36:43,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 05:36:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 05:36:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-11-20 05:36:43,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 05:36:43,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-20 05:36:43,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-20 05:36:43,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:43,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2019-11-20 05:36:43,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 05:36:43,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2019-11-20 05:36:43,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 05:36:43,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 05:36:43,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2019-11-20 05:36:43,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:43,897 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2019-11-20 05:36:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2019-11-20 05:36:43,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2019-11-20 05:36:43,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 05:36:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2019-11-20 05:36:43,900 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-11-20 05:36:43,900 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2019-11-20 05:36:43,900 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 05:36:43,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2019-11-20 05:36:43,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 05:36:43,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:43,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:43,902 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2019-11-20 05:36:43,903 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2019-11-20 05:36:43,903 INFO L794 eck$LassoCheckResult]: Stem: 1226#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1227#L13-1 assume !!(main_~i~0 > 10); 1234#L10 assume !(25 == main_~i~0); 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1228#L13-1 assume !!(main_~i~0 > 10); 1230#L10 assume !(25 == main_~i~0); 1251#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1247#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2019-11-20 05:36:43,903 INFO L796 eck$LassoCheckResult]: Loop: 1237#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2019-11-20 05:36:43,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2019-11-20 05:36:43,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088510770] [2019-11-20 05:36:43,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,916 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2019-11-20 05:36:43,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370257116] [2019-11-20 05:36:43,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:43,925 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:43,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2019-11-20 05:36:43,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:43,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294012932] [2019-11-20 05:36:43,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-20 05:36:43,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294012932] [2019-11-20 05:36:43,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142172018] [2019-11-20 05:36:43,964 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 05:36:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:43,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 05:36:43,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-20 05:36:43,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:36:43,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 05:36:43,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132076300] [2019-11-20 05:36:44,031 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:44,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:44,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:44,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:44,032 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:44,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:44,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:44,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2019-11-20 05:36:44,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:44,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:44,033 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 05:36:44,038 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 05:36:44,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:44,087 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:44,087 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:44,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:44,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:44,099 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:44,104 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:44,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:44,122 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,128 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:44,130 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:44,130 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:44,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:44,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:44,130 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:44,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:44,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:44,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2019-11-20 05:36:44,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:44,131 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:44,132 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 05:36:44,141 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 05:36:44,149 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 05:36:44,192 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:44,193 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,196 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 05:36:44,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:44,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:44,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:44,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:44,199 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:44,200 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 05:36:44,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,207 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 05:36:44,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:44,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:44,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:44,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:44,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:44,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:44,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:44,212 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:44,219 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:44,219 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,223 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:44,223 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:44,223 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:44,223 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2019-11-20 05:36:44,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 05:36:44,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:44,288 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 05:36:44,288 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-11-20 05:36:44,310 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 81 states and 107 transitions. Complement of second has 7 states. [2019-11-20 05:36:44,312 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 [2019-11-20 05:36:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 05:36:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 05:36:44,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2019-11-20 05:36:44,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,313 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:44,362 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 05:36:44,363 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-11-20 05:36:44,392 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 9 states. [2019-11-20 05:36:44,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 05:36:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 05:36:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-11-20 05:36:44,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2019-11-20 05:36:44,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,393 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:44,434 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 3 loop predicates [2019-11-20 05:36:44,434 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-11-20 05:36:44,455 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 101 states and 141 transitions. Complement of second has 10 states. [2019-11-20 05:36:44,455 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 [2019-11-20 05:36:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 05:36:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 05:36:44,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2019-11-20 05:36:44,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,457 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:44,502 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 05:36:44,502 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-11-20 05:36:44,561 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 76 states and 101 transitions. Complement of second has 11 states. [2019-11-20 05:36:44,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 05:36:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 05:36:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-20 05:36:44,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2019-11-20 05:36:44,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2019-11-20 05:36:44,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2019-11-20 05:36:44,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2019-11-20 05:36:44,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2019-11-20 05:36:44,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2019-11-20 05:36:44,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 05:36:44,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 05:36:44,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2019-11-20 05:36:44,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:44,568 INFO L688 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2019-11-20 05:36:44,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2019-11-20 05:36:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2019-11-20 05:36:44,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 05:36:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2019-11-20 05:36:44,572 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2019-11-20 05:36:44,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 05:36:44,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:36:44,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:36:44,573 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 5 states. [2019-11-20 05:36:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:36:44,598 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2019-11-20 05:36:44,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 05:36:44,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2019-11-20 05:36:44,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-20 05:36:44,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2019-11-20 05:36:44,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-20 05:36:44,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-20 05:36:44,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2019-11-20 05:36:44,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:44,600 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-20 05:36:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2019-11-20 05:36:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2019-11-20 05:36:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 05:36:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2019-11-20 05:36:44,603 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-20 05:36:44,603 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-20 05:36:44,603 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 05:36:44,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2019-11-20 05:36:44,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 05:36:44,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:44,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:44,604 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:36:44,604 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2019-11-20 05:36:44,604 INFO L794 eck$LassoCheckResult]: Stem: 1992#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1993#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2019-11-20 05:36:44,604 INFO L796 eck$LassoCheckResult]: Loop: 1994#L13-1 assume !!(main_~i~0 > 10); 1988#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1989#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1996#L13-1 assume !!(main_~i~0 > 10); 1990#L10 assume !(25 == main_~i~0); 1991#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1997#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2019-11-20 05:36:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2019-11-20 05:36:44,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:44,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111564086] [2019-11-20 05:36:44,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:44,611 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,611 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2019-11-20 05:36:44,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:44,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733422496] [2019-11-20 05:36:44,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:44,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:44,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2019-11-20 05:36:44,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:44,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092005758] [2019-11-20 05:36:44,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:44,631 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:44,700 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:44,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:44,701 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:44,701 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:44,701 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:44,701 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,701 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:44,701 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:44,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2019-11-20 05:36:44,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:44,701 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:44,702 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 05:36:44,710 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 05:36:44,716 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 05:36:44,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:44,764 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:44,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:44,772 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 05:36:44,772 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:44,777 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:44,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 05:36:44,792 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:44,796 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:44,796 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:44,797 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:44,797 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:44,797 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:44,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:44,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:44,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2019-11-20 05:36:44,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:44,798 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:44,798 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 05:36:44,803 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 05:36:44,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:44,860 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:44,860 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,869 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 05:36:44,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:44,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:44,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:44,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:44,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:44,873 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 05:36:44,876 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,881 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 05:36:44,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:44,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:44,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:44,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:44,885 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 05:36:44,886 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 05:36:44,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,894 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 05:36:44,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:44,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:44,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:44,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:44,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:44,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:44,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 05:36:44,899 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:44,901 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:44,901 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:44,905 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:44,905 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:44,906 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:44,906 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2019-11-20 05:36:44,907 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:44,968 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 05:36:44,968 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-11-20 05:36:44,980 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 47 transitions. Complement of second has 5 states. [2019-11-20 05:36:44,980 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 05:36:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 05:36:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:44,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2019-11-20 05:36:44,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:44,981 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:44,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:44,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:45,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 05:36:45,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-11-20 05:36:45,067 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 40 states and 49 transitions. Complement of second has 7 states. [2019-11-20 05:36:45,068 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 [2019-11-20 05:36:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 05:36:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-20 05:36:45,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2019-11-20 05:36:45,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,069 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:45,138 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 4 loop predicates [2019-11-20 05:36:45,138 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-11-20 05:36:45,166 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 49 transitions. Complement of second has 5 states. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 05:36:45,168 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 05:36:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 05:36:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-20 05:36:45,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2019-11-20 05:36:45,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,170 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:45,255 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 05:36:45,255 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-11-20 05:36:45,279 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 41 states and 51 transitions. Complement of second has 6 states. [2019-11-20 05:36:45,280 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 [2019-11-20 05:36:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 05:36:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 05:36:45,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2019-11-20 05:36:45,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,281 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:45,343 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 05:36:45,344 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2019-11-20 05:36:45,437 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. Result 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2019-11-20 05:36:45,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-11-20 05:36:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 05:36:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2019-11-20 05:36:45,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2019-11-20 05:36:45,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2019-11-20 05:36:45,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2019-11-20 05:36:45,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,445 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2019-11-20 05:36:45,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2019-11-20 05:36:45,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2019-11-20 05:36:45,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 05:36:45,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 05:36:45,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2019-11-20 05:36:45,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:45,450 INFO L688 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2019-11-20 05:36:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2019-11-20 05:36:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2019-11-20 05:36:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-20 05:36:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2019-11-20 05:36:45,455 INFO L711 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2019-11-20 05:36:45,455 INFO L591 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2019-11-20 05:36:45,455 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 05:36:45,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2019-11-20 05:36:45,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-20 05:36:45,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:45,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:45,457 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:36:45,457 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2019-11-20 05:36:45,457 INFO L794 eck$LassoCheckResult]: Stem: 2689#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2691#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2019-11-20 05:36:45,458 INFO L796 eck$LassoCheckResult]: Loop: 2692#L13-1 assume !!(main_~i~0 > 10); 2693#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2696#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2019-11-20 05:36:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2019-11-20 05:36:45,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:45,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38347237] [2019-11-20 05:36:45,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:45,463 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,463 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2019-11-20 05:36:45,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:45,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538958616] [2019-11-20 05:36:45,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:45,472 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2019-11-20 05:36:45,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:45,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170718427] [2019-11-20 05:36:45,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:45,482 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:45,567 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:45,567 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:45,567 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:45,567 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:45,567 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 05:36:45,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:45,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:45,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:45,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2019-11-20 05:36:45,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:45,568 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:45,568 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 05:36:45,575 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 05:36:45,577 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 05:36:45,631 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:45,631 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:45,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 05:36:45,642 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:45,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 05:36:45,653 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:45,659 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 05:36:45,660 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 05:36:45,660 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 05:36:45,661 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 05:36:45,661 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 05:36:45,661 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 05:36:45,661 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:45,661 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 05:36:45,661 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 05:36:45,661 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2019-11-20 05:36:45,661 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 05:36:45,661 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 05:36:45,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 05:36:45,673 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 05:36:45,676 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 05:36:45,709 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 05:36:45,709 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:45,718 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 05:36:45,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 05:36:45,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 05:36:45,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 05:36:45,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 05:36:45,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 05:36:45,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 05:36:45,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:45,724 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 05:36:45,727 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 05:36:45,727 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 05:36:45,733 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 05:36:45,733 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 05:36:45,733 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 05:36:45,734 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2019-11-20 05:36:45,735 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 05:36:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:45,914 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 05:36:45,914 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-11-20 05:36:45,941 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 101 states and 129 transitions. Complement of second has 5 states. [2019-11-20 05:36:45,944 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 05:36:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 05:36:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 05:36:45,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-20 05:36:45,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:45,945 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:45,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 05:36:45,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:46,014 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 05:36:46,014 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-11-20 05:36:46,040 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 106 states and 135 transitions. Complement of second has 7 states. [2019-11-20 05:36:46,041 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 [2019-11-20 05:36:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 05:36:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-20 05:36:46,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-20 05:36:46,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:46,042 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:46,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:46,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:46,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 05:36:46,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:46,121 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 5 loop predicates [2019-11-20 05:36:46,121 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-11-20 05:36:46,137 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 95 states and 126 transitions. Complement of second has 5 states. [2019-11-20 05:36:46,137 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 05:36:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 05:36:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-11-20 05:36:46,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-20 05:36:46,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:46,138 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:46,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:46,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:46,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 05:36:46,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:46,207 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 05:36:46,207 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-11-20 05:36:46,243 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 99 states and 128 transitions. Complement of second has 6 states. [2019-11-20 05:36:46,244 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 [2019-11-20 05:36:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 05:36:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 05:36:46,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-20 05:36:46,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:46,245 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 05:36:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:46,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 05:36:46,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:36:46,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 05:36:46,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:36:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:36:46,331 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 05:36:46,331 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2019-11-20 05:36:46,506 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2019-11-20 05:36:46,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 05:36:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 05:36:46,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2019-11-20 05:36:46,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-20 05:36:46,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:46,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2019-11-20 05:36:46,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:46,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2019-11-20 05:36:46,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 05:36:46,513 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2019-11-20 05:36:46,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2019-11-20 05:36:46,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2019-11-20 05:36:46,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 05:36:46,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 05:36:46,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2019-11-20 05:36:46,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 05:36:46,534 INFO L688 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2019-11-20 05:36:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2019-11-20 05:36:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2019-11-20 05:36:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-11-20 05:36:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2019-11-20 05:36:46,562 INFO L711 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2019-11-20 05:36:46,563 INFO L591 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2019-11-20 05:36:46,563 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 05:36:46,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2019-11-20 05:36:46,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-11-20 05:36:46,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 05:36:46,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 05:36:46,566 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 05:36:46,566 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2019-11-20 05:36:46,566 INFO L794 eck$LassoCheckResult]: Stem: 4641#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4645#L13-1 assume !!(main_~i~0 > 10); 4657#L10 assume !(25 == main_~i~0); 4655#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2019-11-20 05:36:46,566 INFO L796 eck$LassoCheckResult]: Loop: 4646#L13-1 assume !!(main_~i~0 > 10); 4647#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4660#L10 assume !(25 == main_~i~0); 4689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4687#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4650#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2019-11-20 05:36:46,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2019-11-20 05:36:46,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:46,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152229722] [2019-11-20 05:36:46,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:46,582 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:46,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2019-11-20 05:36:46,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:46,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011425068] [2019-11-20 05:36:46,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:46,610 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:36:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2019-11-20 05:36:46,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 05:36:46,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601014106] [2019-11-20 05:36:46,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 05:36:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 05:36:46,644 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 05:36:46,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 05:36:46 BoogieIcfgContainer [2019-11-20 05:36:46,753 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 05:36:46,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 05:36:46,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 05:36:46,754 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 05:36:46,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:36:39" (3/4) ... [2019-11-20 05:36:46,758 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-20 05:36:46,802 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_113b7067-c889-459e-a923-ccadb1fc10fd/bin/uautomizer/witness.graphml [2019-11-20 05:36:46,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 05:36:46,804 INFO L168 Benchmark]: Toolchain (without parser) took 7715.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 294.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). Peak memory consumption was 169.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:36:46,804 INFO L168 Benchmark]: CDTParser took 0.32 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. [2019-11-20 05:36:46,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:36:46,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.44 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:36:46,806 INFO L168 Benchmark]: Boogie Preprocessor took 16.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:36:46,806 INFO L168 Benchmark]: RCFGBuilder took 290.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2019-11-20 05:36:46,807 INFO L168 Benchmark]: BuchiAutomizer took 7049.84 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 178.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 190.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:36:46,807 INFO L168 Benchmark]: Witness Printer took 48.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-11-20 05:36:46,809 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 276.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.44 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 290.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7049.84 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 178.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.9 MB). Peak memory consumption was 190.7 MB. Max. memory is 11.5 GB. * Witness Printer took 48.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. 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 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function -2 * i + 51 and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.9s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 3.7s. Construction of modules took 0.4s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 246 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital9 mio100 ax234 hnf100 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c317c47=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...