./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 32bit --witnessprinter.graph.data.programhash a881e1073186594f4727f809fbe5d917ff145543 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:21:14,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:21:14,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:21:14,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:21:14,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:21:14,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:21:14,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:21:14,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:21:14,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:21:14,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:21:14,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:21:14,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:21:14,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:21:14,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:21:14,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:21:14,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:21:14,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:21:14,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:21:14,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:21:14,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:21:14,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:21:14,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:21:14,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:21:14,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:21:14,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:21:14,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:21:14,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:21:14,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:21:14,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:21:14,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:21:14,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:21:14,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:21:14,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:21:14,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:21:14,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:21:14,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:21:14,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:21:14,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:21:14,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:21:14,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:21:14,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:21:14,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 12:21:14,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:21:14,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:21:14,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:21:14,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:21:14,951 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:21:14,951 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 12:21:14,952 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 12:21:14,952 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 12:21:14,952 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 12:21:14,952 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 12:21:14,952 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 12:21:14,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:21:14,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:21:14,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:21:14,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:21:14,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:21:14,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 12:21:14,954 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:21:14,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 12:21:14,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:21:14,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:21:14,955 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 12:21:14,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:21:14,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:21:14,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:21:14,956 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 12:21:14,957 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 12:21:14,957 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_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a881e1073186594f4727f809fbe5d917ff145543 [2019-12-07 12:21:15,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:21:15,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:21:15,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:21:15,076 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:21:15,077 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:21:15,077 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/../../sv-benchmarks/c/loop-new/nested-1.i [2019-12-07 12:21:15,118 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/data/2e625c146/c1486fe8274240e6a6ea69de64d5783f/FLAG47a985083 [2019-12-07 12:21:15,514 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:21:15,514 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/sv-benchmarks/c/loop-new/nested-1.i [2019-12-07 12:21:15,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/data/2e625c146/c1486fe8274240e6a6ea69de64d5783f/FLAG47a985083 [2019-12-07 12:21:15,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/data/2e625c146/c1486fe8274240e6a6ea69de64d5783f [2019-12-07 12:21:15,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:21:15,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:21:15,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:21:15,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:21:15,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:21:15,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:21:15" (1/1) ... [2019-12-07 12:21:15,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cb3cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:15, skipping insertion in model container [2019-12-07 12:21:15,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:21:15" (1/1) ... [2019-12-07 12:21:15,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:21:15,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:21:16,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:21:16,024 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:21:16,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:21:16,078 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:21:16,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16 WrapperNode [2019-12-07 12:21:16,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:21:16,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:21:16,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:21:16,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:21:16,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:21:16,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:21:16,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:21:16,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:21:16,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... [2019-12-07 12:21:16,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:21:16,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:21:16,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:21:16,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:21:16,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:21:16,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:21:16,255 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:21:16,256 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 12:21:16,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:21:16 BoogieIcfgContainer [2019-12-07 12:21:16,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:21:16,257 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 12:21:16,257 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 12:21:16,259 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 12:21:16,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:21:16,260 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 12:21:15" (1/3) ... [2019-12-07 12:21:16,260 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71cd6ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:21:16, skipping insertion in model container [2019-12-07 12:21:16,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:21:16,261 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:21:16" (2/3) ... [2019-12-07 12:21:16,261 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71cd6ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 12:21:16, skipping insertion in model container [2019-12-07 12:21:16,261 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 12:21:16,261 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:21:16" (3/3) ... [2019-12-07 12:21:16,262 INFO L371 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2019-12-07 12:21:16,291 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 12:21:16,291 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 12:21:16,291 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 12:21:16,291 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:21:16,291 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:21:16,291 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 12:21:16,292 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:21:16,292 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 12:21:16,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-12-07 12:21:16,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:21:16,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:21:16,313 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:21:16,317 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 12:21:16,317 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 12:21:16,318 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 12:21:16,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-12-07 12:21:16,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 12:21:16,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:21:16,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:21:16,319 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 12:21:16,319 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 12:21:16,324 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post5, main_#t~post4, main_#t~post3, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 3#L15true assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 7#L16true assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 15#L17-3true [2019-12-07 12:21:16,324 INFO L796 eck$LassoCheckResult]: Loop: 15#L17-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 4#L18-3true assume !(main_~j~0 < main_~m~0); 5#L17-2true main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 15#L17-3true [2019-12-07 12:21:16,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,328 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2019-12-07 12:21:16,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:16,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607308573] [2019-12-07 12:21:16,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:21:16,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,405 INFO L82 PathProgramCache]: Analyzing trace with hash 48858, now seen corresponding path program 1 times [2019-12-07 12:21:16,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:16,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650075649] [2019-12-07 12:21:16,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:21:16,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash 922020726, now seen corresponding path program 1 times [2019-12-07 12:21:16,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:16,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126022288] [2019-12-07 12:21:16,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:16,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126022288] [2019-12-07 12:21:16,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:21:16,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:21:16,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966335789] [2019-12-07 12:21:16,491 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:21:16,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:21:16,491 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:21:16,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:21:16,492 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:21:16,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:16,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:21:16,492 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:21:16,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration1_Loop [2019-12-07 12:21:16,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:21:16,493 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:21:16,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,558 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:21:16,559 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:16,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:21:16,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:21:16,570 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 12:21:16,570 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:16,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:21:16,574 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:16,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:21:16,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:21:16,702 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:21:16,703 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:21:16,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:21:16,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:21:16,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:21:16,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:21:16,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:16,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:21:16,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:21:16,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration1_Loop [2019-12-07 12:21:16,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:21:16,704 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:21:16,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,740 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:21:16,744 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:16,747 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 [2019-12-07 12:21:16,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:21:16,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:21:16,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:21:16,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:21:16,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:21:16,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:21:16,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:21:16,754 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:16,758 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 [2019-12-07 12:21:16,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:21:16,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:21:16,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:21:16,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:21:16,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:21:16,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:21:16,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:21:16,762 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:21:16,765 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 12:21:16,766 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:16,770 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:21:16,770 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:21:16,770 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:21:16,771 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-12-07 12:21:16,774 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:21:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:16,801 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:21:16,802 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:16,809 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:21:16,809 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:16,828 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 [2019-12-07 12:21:16,829 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2019-12-07 12:21:16,858 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 40 states and 55 transitions. Complement of second has 7 states. [2019-12-07 12:21:16,858 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 [2019-12-07 12:21:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:21:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2019-12-07 12:21:16,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 3 letters. [2019-12-07 12:21:16,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:16,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 12:21:16,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:16,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 12:21:16,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:16,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2019-12-07 12:21:16,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:21:16,868 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 11 states and 14 transitions. [2019-12-07 12:21:16,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 12:21:16,869 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 12:21:16,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-12-07 12:21:16,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:21:16,869 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-12-07 12:21:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-12-07 12:21:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-12-07 12:21:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 12:21:16,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-12-07 12:21:16,890 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-12-07 12:21:16,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:21:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:21:16,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:21:16,894 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 4 states. [2019-12-07 12:21:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:21:16,918 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-12-07 12:21:16,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:21:16,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2019-12-07 12:21:16,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:21:16,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 17 transitions. [2019-12-07 12:21:16,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 12:21:16,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 12:21:16,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2019-12-07 12:21:16,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:21:16,921 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-12-07 12:21:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2019-12-07 12:21:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2019-12-07 12:21:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:21:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-12-07 12:21:16,923 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-12-07 12:21:16,923 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-12-07 12:21:16,923 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 12:21:16,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-12-07 12:21:16,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:21:16,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:21:16,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:21:16,924 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 12:21:16,924 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:21:16,925 INFO L794 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post5, main_#t~post4, main_#t~post3, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 127#L15 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 128#L16 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 136#L17-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 129#L18-3 [2019-12-07 12:21:16,925 INFO L796 eck$LassoCheckResult]: Loop: 129#L18-3 assume !!(main_~j~0 < main_~m~0);main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 130#L18-2 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 129#L18-3 [2019-12-07 12:21:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash 959438, now seen corresponding path program 1 times [2019-12-07 12:21:16,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:16,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512779312] [2019-12-07 12:21:16,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,937 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:21:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1827, now seen corresponding path program 1 times [2019-12-07 12:21:16,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:16,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278398278] [2019-12-07 12:21:16,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,944 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:21:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:16,944 INFO L82 PathProgramCache]: Analyzing trace with hash 922020784, now seen corresponding path program 1 times [2019-12-07 12:21:16,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:16,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417015815] [2019-12-07 12:21:16,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:16,958 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:21:16,970 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:21:16,970 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:21:16,970 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:21:16,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:21:16,970 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:21:16,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:16,971 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:21:16,971 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:21:16,971 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2019-12-07 12:21:16,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:21:16,971 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:21:16,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:16,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,004 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:21:17,004 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:21:17,007 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:21:17,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:21:17,161 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:21:17,162 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:21:17,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:21:17,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:21:17,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:21:17,163 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:21:17,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:21:17,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:21:17,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2019-12-07 12:21:17,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:21:17,163 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:21:17,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,193 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:21:17,193 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,197 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 [2019-12-07 12:21:17,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:21:17,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:21:17,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:21:17,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:21:17,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:21:17,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:21:17,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:21:17,202 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:21:17,218 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 12:21:17,218 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:17,221 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:21:17,221 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:21:17,221 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:21:17,221 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 12:21:17,223 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:21:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,242 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,243 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,247 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,247 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:17,255 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 [2019-12-07 12:21:17,255 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 12:21:17,266 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 7 states. [2019-12-07 12:21:17,266 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 [2019-12-07 12:21:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:21:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 12:21:17,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 12:21:17,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 12:21:17,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 12:21:17,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-12-07 12:21:17,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:21:17,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 20 transitions. [2019-12-07 12:21:17,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 12:21:17,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 12:21:17,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2019-12-07 12:21:17,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 12:21:17,269 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 12:21:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2019-12-07 12:21:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2019-12-07 12:21:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:21:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-12-07 12:21:17,270 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-07 12:21:17,270 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-07 12:21:17,270 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 12:21:17,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-12-07 12:21:17,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 12:21:17,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 12:21:17,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 12:21:17,271 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:21:17,271 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 12:21:17,272 INFO L794 eck$LassoCheckResult]: Stem: 212#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~post5, main_#t~post4, main_#t~post3, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 209#L15 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 210#L16 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 213#L17-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 207#L18-3 assume !!(main_~j~0 < main_~m~0);main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 208#L18-2 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 211#L18-3 assume !(main_~j~0 < main_~m~0); 203#L17-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 204#L17-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 205#L18-3 [2019-12-07 12:21:17,272 INFO L796 eck$LassoCheckResult]: Loop: 205#L18-3 assume !!(main_~j~0 < main_~m~0);main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 206#L18-2 main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 205#L18-3 [2019-12-07 12:21:17,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:17,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1605343291, now seen corresponding path program 1 times [2019-12-07 12:21:17,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:17,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140525504] [2019-12-07 12:21:17,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:17,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140525504] [2019-12-07 12:21:17,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643105438] [2019-12-07 12:21:17,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:21:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,314 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,314 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:17,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:21:17,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-07 12:21:17,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137838320] [2019-12-07 12:21:17,345 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 12:21:17,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:17,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1827, now seen corresponding path program 2 times [2019-12-07 12:21:17,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:21:17,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292573947] [2019-12-07 12:21:17,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:21:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:21:17,350 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:21:17,359 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:21:17,360 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:21:17,360 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:21:17,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:21:17,360 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 12:21:17,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:21:17,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:21:17,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2019-12-07 12:21:17,361 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:21:17,361 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:21:17,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,388 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:21:17,388 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:17,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 12:21:17,391 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:17,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 12:21:17,401 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 12:21:17,547 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 12:21:17,549 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 12:21:17,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 12:21:17,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 12:21:17,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 12:21:17,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 12:21:17,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 12:21:17,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 12:21:17,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2019-12-07 12:21:17,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 12:21:17,550 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 12:21:17,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 12:21:17,579 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 12:21:17,580 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 12:21:17,585 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 [2019-12-07 12:21:17,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 12:21:17,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 12:21:17,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 12:21:17,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 12:21:17,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 12:21:17,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 12:21:17,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 12:21:17,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 12:21:17,597 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 12:21:17,597 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f4aed13-4839-4ba6-9efb-fbe0e0cf99ac/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 [2019-12-07 12:21:17,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 12:21:17,602 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 12:21:17,602 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 12:21:17,602 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-12-07 12:21:17,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 12:21:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,619 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,620 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,623 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,623 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:17,631 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 [2019-12-07 12:21:17,631 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 12:21:17,640 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 7 states. [2019-12-07 12:21:17,641 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 [2019-12-07 12:21:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:21:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 12:21:17,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 2 letters. [2019-12-07 12:21:17,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,642 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:21:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,655 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,656 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,659 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,660 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:17,668 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 [2019-12-07 12:21:17,668 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 12:21:17,677 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 24 transitions. Complement of second has 7 states. [2019-12-07 12:21:17,678 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 [2019-12-07 12:21:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:21:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 12:21:17,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 2 letters. [2019-12-07 12:21:17,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,678 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 12:21:17,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:21:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,692 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,692 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:21:17,696 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:21:17,696 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:21:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:21:17,708 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 [2019-12-07 12:21:17,708 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 12:21:17,720 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 6 states. [2019-12-07 12:21:17,720 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 [2019-12-07 12:21:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 12:21:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-12-07 12:21:17,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 2 letters. [2019-12-07 12:21:17,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 2 letters. [2019-12-07 12:21:17,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2019-12-07 12:21:17,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 12:21:17,722 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2019-12-07 12:21:17,722 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:21:17,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-12-07 12:21:17,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 12:21:17,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 12:21:17,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 12:21:17,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:21:17,723 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:21:17,723 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:21:17,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:21:17,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 12:21:17,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:21:17,723 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2019-12-07 12:21:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:21:17,724 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 12:21:17,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:21:17,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 12:21:17,724 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:21:17,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:21:17,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 12:21:17,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 12:21:17,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 12:21:17,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 12:21:17,724 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:21:17,724 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:21:17,724 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:21:17,725 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 12:21:17,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:21:17,725 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 12:21:17,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 12:21:17,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 12:21:17 BoogieIcfgContainer [2019-12-07 12:21:17,729 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 12:21:17,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:21:17,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:21:17,730 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:21:17,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:21:16" (3/4) ... [2019-12-07 12:21:17,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:21:17,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:21:17,734 INFO L168 Benchmark]: Toolchain (without parser) took 1832.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.8 MB in the beginning and 868.4 MB in the end (delta: 71.4 MB). Peak memory consumption was 173.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:21:17,734 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:21:17,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:21:17,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.34 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:21:17,735 INFO L168 Benchmark]: Boogie Preprocessor took 12.89 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. [2019-12-07 12:21:17,735 INFO L168 Benchmark]: RCFGBuilder took 142.71 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:21:17,736 INFO L168 Benchmark]: BuchiAutomizer took 1472.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 873.7 MB in the end (delta: 205.2 MB). Peak memory consumption was 205.2 MB. Max. memory is 11.5 GB. [2019-12-07 12:21:17,736 INFO L168 Benchmark]: Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 873.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:21:17,738 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 177.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.34 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.89 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 142.71 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1472.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 873.7 MB in the end (delta: 205.2 MB). Peak memory consumption was 205.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 ms. Allocated memory is still 1.1 GB. Free memory is still 873.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. One deterministic module has affine ranking function m + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 49 SDtfs, 50 SDslu, 25 SDs, 0 SdLazy, 46 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf98 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...