./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/2Nested-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/2Nested-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/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 e73aa59ec9606428c1e0dd19193fa59dbe50e869 ............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:22:09,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:22:09,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:22:09,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:22:09,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:22:09,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:22:09,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:22:09,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:22:09,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:22:09,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:22:09,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:22:09,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:22:09,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:22:09,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:22:09,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:22:09,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:22:09,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:22:09,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:22:09,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:22:09,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:22:09,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:22:09,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:22:09,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:22:09,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:22:09,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:22:09,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:22:09,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:22:09,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:22:09,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:22:09,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:22:09,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:22:09,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:22:09,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:22:09,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:22:09,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:22:09,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:22:09,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:22:09,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:22:09,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:22:09,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:22:09,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:22:09,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 00:22:09,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:22:09,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:22:09,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:22:09,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:22:09,267 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:22:09,268 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 00:22:09,268 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 00:22:09,268 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 00:22:09,268 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 00:22:09,269 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 00:22:09,269 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 00:22:09,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:22:09,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:22:09,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:22:09,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:22:09,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 00:22:09,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 00:22:09,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 00:22:09,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:22:09,271 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 00:22:09,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:22:09,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 00:22:09,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:22:09,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:22:09,273 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 00:22:09,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:22:09,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:22:09,274 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 00:22:09,274 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 00:22:09,275 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/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 -> e73aa59ec9606428c1e0dd19193fa59dbe50e869 [2019-11-20 00:22:09,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:22:09,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:22:09,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:22:09,468 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:22:09,469 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:22:09,470 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/2Nested-1.c [2019-11-20 00:22:09,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/data/95dd900fc/7e2925a324b04a43858d479bc9fae501/FLAG5b674af83 [2019-11-20 00:22:09,974 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:22:09,974 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/sv-benchmarks/c/termination-crafted/2Nested-1.c [2019-11-20 00:22:09,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/data/95dd900fc/7e2925a324b04a43858d479bc9fae501/FLAG5b674af83 [2019-11-20 00:22:10,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/data/95dd900fc/7e2925a324b04a43858d479bc9fae501 [2019-11-20 00:22:10,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:22:10,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:22:10,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:22:10,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:22:10,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:22:10,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca74e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10, skipping insertion in model container [2019-11-20 00:22:10,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:22:10,441 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:22:10,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:22:10,573 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:22:10,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:22:10,676 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:22:10,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10 WrapperNode [2019-11-20 00:22:10,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:22:10,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:22:10,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:22:10,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:22:10,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:22:10,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:22:10,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:22:10,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:22:10,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... [2019-11-20 00:22:10,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:22:10,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:22:10,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:22:10,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:22:10,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:22:10,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:22:11,028 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:22:11,028 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 00:22:11,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:11 BoogieIcfgContainer [2019-11-20 00:22:11,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:22:11,030 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 00:22:11,030 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 00:22:11,035 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 00:22:11,036 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:22:11,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:22:10" (1/3) ... [2019-11-20 00:22:11,038 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4efb71a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:22:11, skipping insertion in model container [2019-11-20 00:22:11,038 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:22:11,038 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:10" (2/3) ... [2019-11-20 00:22:11,039 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4efb71a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:22:11, skipping insertion in model container [2019-11-20 00:22:11,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:22:11,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:11" (3/3) ... [2019-11-20 00:22:11,041 INFO L371 chiAutomizerObserver]: Analyzing ICFG 2Nested-1.c [2019-11-20 00:22:11,099 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 00:22:11,099 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 00:22:11,099 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 00:22:11,099 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:22:11,099 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:22:11,100 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 00:22:11,100 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:22:11,100 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 00:22:11,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-20 00:22:11,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 00:22:11,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:22:11,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:22:11,144 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 00:22:11,144 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 00:22:11,144 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 00:22:11,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-20 00:22:11,146 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 00:22:11,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:22:11,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:22:11,147 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 00:22:11,147 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 00:22:11,156 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L21true assume !!(main_~x~0 <= 65534); 5#L22true assume !!(main_~y~0 <= 65534); 10#L24true assume !!(main_~y~0 >= -65534); 8#L25-2true [2019-11-20 00:22:11,156 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~y~0;main_~y~0 := main_~y~0 - 1; 8#L25-2true [2019-11-20 00:22:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:22:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2019-11-20 00:22:11,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:22:11,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141789025] [2019-11-20 00:22:11,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:22:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:22:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:22:11,272 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:22:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:22:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2019-11-20 00:22:11,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:22:11,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368885259] [2019-11-20 00:22:11,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:22:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:22:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:22:11,286 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:22:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:22:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash 29742510, now seen corresponding path program 1 times [2019-11-20 00:22:11,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:22:11,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935706988] [2019-11-20 00:22:11,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:22:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:22:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:22:11,305 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:22:11,392 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:22:11,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:22:11,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:22:11,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:22:11,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:22:11,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:11,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:22:11,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:22:11,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2019-11-20 00:22:11,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:22:11,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:22:11,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:22:11,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:22:11,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:22:11,565 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:22:11,565 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:22:11,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:22:11,579 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:11,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:22:11,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:22:11,837 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:22:11,839 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:22:11,839 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:22:11,839 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:22:11,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:22:11,839 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:22:11,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:11,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:22:11,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:22:11,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2019-11-20 00:22:11,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:22:11,840 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:22:11,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:22:11,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:22:11,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:22:11,961 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:22:11,966 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:11,978 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:22:11,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:22:11,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:22:11,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:22:11,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:22:11,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:22:11,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:22:11,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:22:12,002 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:22:12,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:22:12,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:22:12,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:22:12,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:22:12,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:22:12,037 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:22:12,039 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:12,048 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:22:12,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:22:12,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:22:12,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:22:12,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:22:12,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:22:12,078 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:22:12,080 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:12,089 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 00:22:12,092 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:22:12,107 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:22:12,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:22:12,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:22:12,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:22:12,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:22:12,111 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:22:12,116 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:22:12,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:12,126 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:22:12,138 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:22:12,138 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bfdd2e4-cdfb-46b6-93d4-45ee58882159/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:22:12,154 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:22:12,154 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:22:12,155 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:22:12,155 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~y~0 + 1 f1 = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-20 00:22:12,162 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:22:12,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:22:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:22:12,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:22:12,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:22:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:22:12,263 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:22:12,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:22:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:22:12,284 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 00:22:12,285 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 2 states. [2019-11-20 00:22:12,326 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 2 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2019-11-20 00:22:12,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 00:22:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 00:22:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-20 00:22:12,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-20 00:22:12,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:22:12,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 00:22:12,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:22:12,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 00:22:12,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:22:12,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2019-11-20 00:22:12,337 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:22:12,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2019-11-20 00:22:12,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 00:22:12,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 00:22:12,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 00:22:12,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:22:12,342 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:22:12,343 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:22:12,343 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:22:12,343 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 00:22:12,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:22:12,343 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:22:12,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 00:22:12,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:22:12 BoogieIcfgContainer [2019-11-20 00:22:12,350 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 00:22:12,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:22:12,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:22:12,351 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:22:12,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:11" (3/4) ... [2019-11-20 00:22:12,356 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 00:22:12,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:22:12,358 INFO L168 Benchmark]: Toolchain (without parser) took 1944.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -80.1 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:22:12,359 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:22:12,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:22:12,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:22:12,361 INFO L168 Benchmark]: Boogie Preprocessor took 22.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:22:12,362 INFO L168 Benchmark]: RCFGBuilder took 292.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 00:22:12,362 INFO L168 Benchmark]: BuchiAutomizer took 1320.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 86.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:22:12,363 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:22:12,366 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -183.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 292.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1320.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 86.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if 2 * y + 1 > 0 then 1 else 0), (if 2 * y + 1 > 0 then 2 * y + 1 else 2 * x + 1) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 12 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...