./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Thun-2.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_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Thun-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/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 840ba140d54545c25f92f53e7838cceec95e9821 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:18:12,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:18:12,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:18:12,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:18:12,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:18:12,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:18:12,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:18:12,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:18:12,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:18:12,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:18:12,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:18:12,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:18:12,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:18:12,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:18:12,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:18:12,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:18:12,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:18:12,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:18:12,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:18:12,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:18:12,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:18:12,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:18:12,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:18:12,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:18:12,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:18:12,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:18:12,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:18:12,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:18:12,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:18:12,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:18:12,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:18:12,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:18:12,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:18:12,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:18:12,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:18:12,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:18:12,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:18:12,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:18:12,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:18:12,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:18:12,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:18:12,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 22:18:12,984 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:18:12,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:18:12,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:18:12,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:18:12,996 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:18:12,996 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 22:18:12,996 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 22:18:12,996 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 22:18:12,996 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 22:18:12,997 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 22:18:12,997 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 22:18:12,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:18:12,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:18:12,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:18:12,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:18:12,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 22:18:12,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 22:18:12,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 22:18:12,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:18:12,999 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 22:18:12,999 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:18:13,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 22:18:13,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:18:13,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:18:13,000 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 22:18:13,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:18:13,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:18:13,001 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 22:18:13,002 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 22:18:13,002 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_9e0883ae-4b16-4220-bf6a-88b944e265a7/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 -> 840ba140d54545c25f92f53e7838cceec95e9821 [2019-11-19 22:18:13,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:18:13,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:18:13,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:18:13,180 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:18:13,182 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:18:13,183 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Thun-2.c [2019-11-19 22:18:13,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/data/4ce92aaa1/ef338abc52864d2b853609bd57991063/FLAGfed71f572 [2019-11-19 22:18:13,618 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:18:13,619 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/sv-benchmarks/c/termination-crafted/Thun-2.c [2019-11-19 22:18:13,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/data/4ce92aaa1/ef338abc52864d2b853609bd57991063/FLAGfed71f572 [2019-11-19 22:18:14,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/data/4ce92aaa1/ef338abc52864d2b853609bd57991063 [2019-11-19 22:18:14,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:18:14,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:18:14,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:18:14,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:18:14,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:18:14,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46659513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14, skipping insertion in model container [2019-11-19 22:18:14,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,064 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:18:14,078 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:18:14,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:18:14,213 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:18:14,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:18:14,300 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:18:14,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14 WrapperNode [2019-11-19 22:18:14,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:18:14,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:18:14,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:18:14,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:18:14,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:18:14,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:18:14,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:18:14,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:18:14,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... [2019-11-19 22:18:14,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:18:14,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:18:14,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:18:14,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:18:14,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/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 [2019-11-19 22:18:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:18:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:18:14,564 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:18:14,564 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-19 22:18:14,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:14 BoogieIcfgContainer [2019-11-19 22:18:14,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:18:14,566 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 22:18:14,566 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 22:18:14,570 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 22:18:14,570 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:18:14,571 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 10:18:14" (1/3) ... [2019-11-19 22:18:14,572 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@587315b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:18:14, skipping insertion in model container [2019-11-19 22:18:14,572 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:18:14,572 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:18:14" (2/3) ... [2019-11-19 22:18:14,573 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@587315b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:18:14, skipping insertion in model container [2019-11-19 22:18:14,573 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:18:14,573 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:14" (3/3) ... [2019-11-19 22:18:14,574 INFO L371 chiAutomizerObserver]: Analyzing ICFG Thun-2.c [2019-11-19 22:18:14,622 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 22:18:14,622 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 22:18:14,622 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 22:18:14,622 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:18:14,623 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:18:14,623 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 22:18:14,623 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:18:14,623 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 22:18:14,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 22:18:14,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 22:18:14,659 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:18:14,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:18:14,665 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:18:14,666 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-19 22:18:14,666 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 22:18:14,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-19 22:18:14,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 22:18:14,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:18:14,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:18:14,668 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:18:14,668 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-19 22:18:14,676 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L29true assume !!(-65535 <= main_~x~0 && main_~x~0 <= 65535); 10#L30true assume !!(-65535 <= main_~y~0 && main_~y~0 <= 65535); 7#L31-2true [2019-11-19 22:18:14,676 INFO L796 eck$LassoCheckResult]: Loop: 7#L31-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~y~0;main_~y~0 := -2 * main_~y~0 - 1; 7#L31-2true [2019-11-19 22:18:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2019-11-19 22:18:14,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:14,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693682415] [2019-11-19 22:18:14,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:18:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:18:14,808 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:18:14,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:14,809 INFO L82 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2019-11-19 22:18:14,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:14,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032568098] [2019-11-19 22:18:14,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:18:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:18:14,832 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:18:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:14,835 INFO L82 PathProgramCache]: Analyzing trace with hash 959439, now seen corresponding path program 1 times [2019-11-19 22:18:14,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:18:14,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912840835] [2019-11-19 22:18:14,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:18:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:18:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:18:14,861 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:18:14,917 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:18:14,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:18:14,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:18:14,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:18:14,918 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:18:14,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:14,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:18:14,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:18:14,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: Thun-2.c_Iteration1_Loop [2019-11-19 22:18:14,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:18:14,919 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:18:14,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:18:14,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:18:14,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:18:15,096 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:18:15,097 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:18:15,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:18:15,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:18:15,122 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_9e0883ae-4b16-4220-bf6a-88b944e265a7/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) [2019-11-19 22:18:15,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:18:15,145 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:18:15,153 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_9e0883ae-4b16-4220-bf6a-88b944e265a7/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) [2019-11-19 22:18:15,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:18:15,168 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:18:15,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:18:15,253 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:18:15,255 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:18:15,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:18:15,255 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:18:15,255 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:18:15,256 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:18:15,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:18:15,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:18:15,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: Thun-2.c_Iteration1_Loop [2019-11-19 22:18:15,256 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:18:15,256 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:18:15,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:18:15,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:18:15,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:18:15,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:18:15,359 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,365 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 [2019-11-19 22:18:15,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:18:15,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:18:15,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:18:15,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:18:15,372 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 22:18:15,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 22:18:15,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,397 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 [2019-11-19 22:18:15,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:18:15,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:18:15,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:18:15,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:18:15,403 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 22:18:15,403 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 22:18:15,407 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,426 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 [2019-11-19 22:18:15,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:18:15,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:18:15,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:18:15,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:18:15,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:18:15,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:18:15,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:18:15,435 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-19 22:18:15,438 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,447 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 [2019-11-19 22:18:15,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:18:15,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:18:15,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:18:15,449 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:18:15,453 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-19 22:18:15,453 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-19 22:18:15,470 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,490 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 [2019-11-19 22:18:15,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:18:15,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:18:15,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:18:15,493 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:18:15,505 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2019-11-19 22:18:15,505 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2019-11-19 22:18:15,519 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e0883ae-4b16-4220-bf6a-88b944e265a7/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,534 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 [2019-11-19 22:18:15,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:18:15,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:18:15,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:18:15,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:18:15,538 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:18:15,545 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:18:15,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:18:15,551 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:18:15,557 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-19 22:18:15,557 INFO L444 ModelExtractionUtils]: 1 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_9e0883ae-4b16-4220-bf6a-88b944e265a7/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) [2019-11-19 22:18:15,565 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:18:15,565 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:18:15,566 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:18:15,566 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 6*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~y~0 + 1 f1 = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-19 22:18:15,571 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:18:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:18:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:18:15,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:18:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:18:15,641 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:18:15,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:18:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:18:15,657 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 [2019-11-19 22:18:15,658 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2019-11-19 22:18:15,698 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 20 states and 24 transitions. Complement of second has 5 states. [2019-11-19 22:18:15,700 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 [2019-11-19 22:18:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-19 22:18:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-19 22:18:15,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-19 22:18:15,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:18:15,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-19 22:18:15,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:18:15,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-19 22:18:15,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:18:15,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2019-11-19 22:18:15,707 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:18:15,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-11-19 22:18:15,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:18:15,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:18:15,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:18:15,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:18:15,711 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:18:15,711 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:18:15,711 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:18:15,711 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 22:18:15,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:18:15,712 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:18:15,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 22:18:15,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 10:18:15 BoogieIcfgContainer [2019-11-19 22:18:15,717 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 22:18:15,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:18:15,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:18:15,717 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:18:15,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:18:14" (3/4) ... [2019-11-19 22:18:15,720 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 22:18:15,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:18:15,722 INFO L168 Benchmark]: Toolchain (without parser) took 1671.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 950.1 MB in the beginning and 965.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 97.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:15,723 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:15,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:15,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:15,724 INFO L168 Benchmark]: Boogie Preprocessor took 17.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:15,725 INFO L168 Benchmark]: RCFGBuilder took 218.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:15,726 INFO L168 Benchmark]: BuchiAutomizer took 1151.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.9 MB in the end (delta: 122.1 MB). Peak memory consumption was 122.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:18:15,726 INFO L168 Benchmark]: Witness Printer took 3.50 ms. Allocated memory is still 1.1 GB. Free memory is still 965.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:18:15,729 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.00 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.05 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 218.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1151.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 965.9 MB in the end (delta: 122.1 MB). Peak memory consumption was 122.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.50 ms. Allocated memory is still 1.1 GB. Free memory is still 965.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if 6 * x + 2 * y + 1 > 0 then 1 else 0), (if 6 * x + 2 * y + 1 > 0 then 6 * x + 2 * y + 1 else 2 * x + 1) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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: 10 SDtfs, 10 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: inital17 mio100 ax170 hnf103 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf93 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...