./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01_assume.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:11,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:11,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:11,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:11,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:11,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:11,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:11,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:11,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:11,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:11,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:11,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:11,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:11,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:11,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:11,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:11,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:11,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:11,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:11,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:11,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:11,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:11,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:11,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:11,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:11,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:11,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:11,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:11,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:11,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:11,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:11,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:11,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:11,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:11,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:11,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:11,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:11,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:11,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:11,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:11,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:11,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:59:11,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:11,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:11,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:11,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:11,295 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:11,295 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:59:11,296 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:59:11,298 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:59:11,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:11,299 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:59:11,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:11,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:11,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:59:11,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:59:11,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:59:11,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:11,301 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:59:11,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:11,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:59:11,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:11,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:11,302 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:59:11,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:11,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:11,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:11,303 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:59:11,305 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:59:11,305 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da7ccbcfff0bcaf24fe1bd516f01da1d9e0ab2a4 [2020-11-28 02:59:11,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:11,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:11,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:11,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:11,663 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:11,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2020-11-28 02:59:11,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/data/a4dbeff3b/8abb5618890d4814afd84581a1c903de/FLAG3628c56ad [2020-11-28 02:59:12,277 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:12,277 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2020-11-28 02:59:12,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/data/a4dbeff3b/8abb5618890d4814afd84581a1c903de/FLAG3628c56ad [2020-11-28 02:59:12,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/data/a4dbeff3b/8abb5618890d4814afd84581a1c903de [2020-11-28 02:59:12,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:12,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:12,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:12,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:12,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:12,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4099a960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12, skipping insertion in model container [2020-11-28 02:59:12,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:12,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:12,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:12,918 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:12,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:12,987 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:12,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12 WrapperNode [2020-11-28 02:59:12,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:12,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:12,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:12,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:13,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:13,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:13,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:13,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:13,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:13,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:13,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:13,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:13,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:13,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:13,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:13,283 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:13,283 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:59:13,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:13 BoogieIcfgContainer [2020-11-28 02:59:13,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:13,286 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:59:13,287 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:59:13,291 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:59:13,292 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:13,292 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:59:12" (1/3) ... [2020-11-28 02:59:13,294 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e3a822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:59:13, skipping insertion in model container [2020-11-28 02:59:13,294 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:13,294 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (2/3) ... [2020-11-28 02:59:13,295 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15e3a822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:59:13, skipping insertion in model container [2020-11-28 02:59:13,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:13,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:13" (3/3) ... [2020-11-28 02:59:13,297 INFO L373 chiAutomizerObserver]: Analyzing ICFG c.01_assume.c [2020-11-28 02:59:13,354 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:59:13,354 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:59:13,354 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:59:13,354 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:13,354 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:13,354 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:59:13,355 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:13,355 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:59:13,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 02:59:13,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 02:59:13,388 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:13,388 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:13,396 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:59:13,396 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:59:13,396 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:59:13,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 02:59:13,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 02:59:13,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:13,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:13,398 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 02:59:13,399 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 02:59:13,407 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L9-2true [2020-11-28 02:59:13,408 INFO L796 eck$LassoCheckResult]: Loop: 6#L9-2true assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 10#L11-2true assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 8#L11-3true main_~x~0 := main_~x~0 - 1; 6#L9-2true [2020-11-28 02:59:13,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 02:59:13,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:13,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034574602] [2020-11-28 02:59:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:13,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:13,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:13,546 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-28 02:59:13,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:13,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6539898] [2020-11-28 02:59:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:13,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:13,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:13,578 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:13,580 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-28 02:59:13,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:13,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033691974] [2020-11-28 02:59:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:13,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:13,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:13,603 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:13,795 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-11-28 02:59:13,920 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:13,921 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:13,921 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:13,922 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:13,922 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:13,922 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:13,922 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:13,922 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:13,922 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2020-11-28 02:59:13,922 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:13,923 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:13,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:13,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:13,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:14,181 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:14,182 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:14,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:14,195 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:14,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:14,207 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:14,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:14,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:14,242 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:14,243 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:14,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:14,286 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:14,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:14,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:14,368 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:14,375 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:14,375 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:14,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:14,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:14,376 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:14,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:14,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:14,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:14,376 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2020-11-28 02:59:14,376 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:14,377 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:14,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:14,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:14,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:14,531 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:14,536 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:14,542 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 [2020-11-28 02:59:14,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:14,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:14,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:14,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:14,557 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:59:14,557 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:14,569 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:14,601 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 [2020-11-28 02:59:14,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:14,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:14,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:14,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:14,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:14,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:14,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:14,627 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:14,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:14,637 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_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:14,647 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:14,647 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:14,647 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:14,648 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:14,693 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:59:14,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:14,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:14,823 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 [2020-11-28 02:59:14,825 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-28 02:59:14,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-28 02:59:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:59:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-28 02:59:14,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-28 02:59:14,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:14,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 02:59:14,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:14,905 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-28 02:59:14,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:14,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-28 02:59:14,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:59:14,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-28 02:59:14,915 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 02:59:14,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 02:59:14,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-28 02:59:14,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:59:14,916 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 02:59:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-28 02:59:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-28 02:59:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:59:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-28 02:59:14,946 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-28 02:59:14,946 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-28 02:59:14,946 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:59:14,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-28 02:59:14,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:59:14,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:14,947 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:14,948 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:59:14,948 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:59:14,948 INFO L794 eck$LassoCheckResult]: Stem: 70#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 71#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 73#L11-2 [2020-11-28 02:59:14,948 INFO L796 eck$LassoCheckResult]: Loop: 73#L11-2 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 73#L11-2 [2020-11-28 02:59:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 02:59:14,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:14,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316656873] [2020-11-28 02:59:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:14,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:14,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:14,962 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:14,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-28 02:59:14,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:14,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322881176] [2020-11-28 02:59:14,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:14,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:14,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:14,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:14,976 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-28 02:59:14,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:14,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345889849] [2020-11-28 02:59:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:14,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:14,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:14,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:15,029 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:15,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:15,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:15,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:15,029 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:15,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:15,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:15,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:15,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2020-11-28 02:59:15,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:15,030 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:15,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:15,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:15,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:15,125 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:15,125 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:15,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:15,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:15,164 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:15,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:15,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:15,216 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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 [2020-11-28 02:59:15,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:15,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:15,309 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:15,311 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:15,312 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:15,312 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:15,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:15,312 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:15,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:15,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:15,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:15,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2020-11-28 02:59:15,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:15,312 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:15,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:15,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:15,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:15,473 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:15,473 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:15,480 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 [2020-11-28 02:59:15,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:15,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:15,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:15,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:15,489 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:59:15,489 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:15,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:15,545 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 [2020-11-28 02:59:15,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:15,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:15,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:15,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:15,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:15,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:15,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:15,563 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:15,570 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:15,570 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_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:15,578 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:15,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:15,578 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:15,579 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:15,622 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:59:15,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:15,690 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:15,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:15,692 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 02:59:15,692 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-28 02:59:15,716 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-11-28 02:59:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:15,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:59:15,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 02:59:15,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 02:59:15,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:15,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-28 02:59:15,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:15,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 02:59:15,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:15,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-28 02:59:15,720 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:59:15,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-11-28 02:59:15,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-28 02:59:15,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-28 02:59:15,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-28 02:59:15,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:59:15,722 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-28 02:59:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-28 02:59:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-11-28 02:59:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:59:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-28 02:59:15,724 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-28 02:59:15,724 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-28 02:59:15,724 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:59:15,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-28 02:59:15,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 02:59:15,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:15,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:15,726 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-28 02:59:15,726 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 02:59:15,727 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 119#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 120#L11-2 assume !((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824); 123#L11-3 main_~x~0 := main_~x~0 - 1; 121#L9-2 assume !!(main_~x~0 >= 0 && main_~y~0 > 0);main_~y~0 := 1; 122#L11-2 [2020-11-28 02:59:15,727 INFO L796 eck$LassoCheckResult]: Loop: 122#L11-2 assume !!((main_~x~0 > main_~y~0 && main_~y~0 > 0) && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 122#L11-2 [2020-11-28 02:59:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:15,728 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-11-28 02:59:15,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:15,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566978348] [2020-11-28 02:59:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:15,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:15,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:15,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:15,747 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-28 02:59:15,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:15,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319002369] [2020-11-28 02:59:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:15,753 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:15,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:15,758 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:15,759 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2020-11-28 02:59:15,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:15,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522751931] [2020-11-28 02:59:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:15,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522751931] [2020-11-28 02:59:15,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621162258] [2020-11-28 02:59:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:59:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:15,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:59:15,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,037 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:59:16,088 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 02:59:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:16,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:59:16,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-28 02:59:16,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830563332] [2020-11-28 02:59:16,136 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:16,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:16,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:16,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:16,136 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:16,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:16,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:16,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2020-11-28 02:59:16,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:16,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:16,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:16,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:16,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:16,256 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:16,257 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/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) [2020-11-28 02:59:16,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:16,266 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,272 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:16,272 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:16,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:16,323 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:16,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:16,394 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,441 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:16,443 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:16,443 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:16,443 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:16,443 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:16,443 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:16,443 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,444 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:16,444 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:16,444 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2020-11-28 02:59:16,444 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:16,444 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:16,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:16,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:16,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:16,532 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:16,532 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:16,535 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 [2020-11-28 02:59:16,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:16,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:16,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:16,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:16,541 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:59:16,541 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,545 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,604 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 [2020-11-28 02:59:16,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:16,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:16,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:16,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:16,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:16,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:16,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:16,614 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:16,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:16,631 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_d8ea0aa7-6c58-425e-89e2-072284fa6bdb/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:16,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:16,635 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:16,635 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:16,635 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:16,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:16,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:59:16,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:16,705 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:16,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:16,706 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 02:59:16,706 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 02:59:16,724 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-11-28 02:59:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:59:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 02:59:16,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-28 02:59:16,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:16,726 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:59:16,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:16,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:59:16,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:16,785 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:16,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:16,786 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 02:59:16,786 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 02:59:16,798 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-11-28 02:59:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:59:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-28 02:59:16,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-28 02:59:16,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:16,800 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:59:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:16,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:59:16,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:16,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:16,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:16,841 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 02:59:16,841 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 02:59:16,858 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2020-11-28 02:59:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 02:59:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 02:59:16,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-28 02:59:16,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:16,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-28 02:59:16,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:16,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 02:59:16,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:16,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2020-11-28 02:59:16,863 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:16,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-11-28 02:59:16,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:59:16,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:59:16,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:59:16,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:59:16,863 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:16,863 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:16,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:16,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:59:16,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:59:16,871 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2020-11-28 02:59:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:16,874 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-28 02:59:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:59:16,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-28 02:59:16,874 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:16,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:59:16,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:59:16,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:59:16,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:59:16,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:59:16,875 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:16,875 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:16,876 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:16,876 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:59:16,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:16,876 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:16,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:59:16,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:59:16 BoogieIcfgContainer [2020-11-28 02:59:16,882 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:59:16,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:16,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:16,886 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:16,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:13" (3/4) ... [2020-11-28 02:59:16,899 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:59:16,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:16,906 INFO L168 Benchmark]: Toolchain (without parser) took 4221.06 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 77.4 MB in the beginning and 88.1 MB in the end (delta: -10.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:16,908 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:16,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.70 ms. Allocated memory is still 111.1 MB. Free memory was 77.4 MB in the beginning and 88.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:16,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.65 ms. Allocated memory is still 111.1 MB. Free memory was 88.8 MB in the beginning and 87.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:16,910 INFO L168 Benchmark]: Boogie Preprocessor took 20.46 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.8 MB in the end (delta: 643.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:16,911 INFO L168 Benchmark]: RCFGBuilder took 227.65 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 78.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:16,912 INFO L168 Benchmark]: BuchiAutomizer took 3596.21 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.1 MB in the beginning and 88.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:16,914 INFO L168 Benchmark]: Witness Printer took 13.84 ms. Allocated memory is still 134.2 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:16,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.70 ms. Allocated memory is still 111.1 MB. Free memory was 77.4 MB in the beginning and 88.8 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.65 ms. Allocated memory is still 111.1 MB. Free memory was 88.8 MB in the beginning and 87.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.46 ms. Allocated memory is still 111.1 MB. Free memory was 87.4 MB in the beginning and 86.8 MB in the end (delta: 643.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 227.65 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 78.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3596.21 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 78.1 MB in the beginning and 88.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Witness Printer took 13.84 ms. Allocated memory is still 134.2 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 25 SDslu, 9 SDs, 0 SdLazy, 32 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf98 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 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...