./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.14.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/b.14.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 95b7495f0c2baf7340e092922372d61d5e360ef5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:12:54,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:12:54,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:12:54,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:12:54,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:12:54,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:12:54,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:12:54,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:12:54,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:12:54,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:12:54,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:12:54,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:12:54,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:12:54,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:12:54,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:12:54,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:12:54,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:12:54,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:12:54,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:12:54,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:12:54,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:12:54,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:12:54,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:12:54,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:12:54,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:12:54,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:12:54,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:12:54,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:12:54,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:12:54,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:12:54,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:12:54,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:12:54,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:12:54,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:12:54,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:12:54,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:12:54,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:12:54,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:12:54,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:12:54,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:12:54,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:12:54,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:12:55,003 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:12:55,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:12:55,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:12:55,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:12:55,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:12:55,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:12:55,007 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:12:55,007 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:12:55,007 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:12:55,007 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:12:55,008 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:12:55,008 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:12:55,008 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:12:55,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:12:55,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:12:55,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:12:55,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:12:55,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:12:55,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:12:55,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:12:55,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:12:55,010 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:12:55,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:12:55,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:12:55,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:12:55,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:12:55,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:12:55,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:12:55,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:12:55,013 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:12:55,013 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95b7495f0c2baf7340e092922372d61d5e360ef5 [2021-08-27 14:12:55,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:12:55,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:12:55,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:12:55,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:12:55,352 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:12:55,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.14.c [2021-08-27 14:12:55,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a84a0ecc/134f02c6b1f74c0d91bf40e4730be534/FLAGbb76232c8 [2021-08-27 14:12:55,799 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:12:55,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.14.c [2021-08-27 14:12:55,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a84a0ecc/134f02c6b1f74c0d91bf40e4730be534/FLAGbb76232c8 [2021-08-27 14:12:55,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a84a0ecc/134f02c6b1f74c0d91bf40e4730be534 [2021-08-27 14:12:55,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:12:55,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:12:55,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:12:55,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:12:55,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:12:55,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:55,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1652c36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55, skipping insertion in model container [2021-08-27 14:12:55,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:55,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:12:55,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:12:55,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:12:55,973 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:12:55,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:12:55,994 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:12:55,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55 WrapperNode [2021-08-27 14:12:55,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:12:55,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:12:55,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:12:55,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:12:56,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:12:56,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:12:56,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:12:56,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:12:56,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:12:56,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:12:56,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:12:56,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:12:56,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (1/1) ... [2021-08-27 14:12:56,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:56,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:56,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:56,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:12:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:12:56,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:12:56,287 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:12:56,287 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 14:12:56,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:12:56 BoogieIcfgContainer [2021-08-27 14:12:56,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:12:56,290 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:12:56,290 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:12:56,293 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:12:56,294 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:12:56,294 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:12:55" (1/3) ... [2021-08-27 14:12:56,295 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f893376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:12:56, skipping insertion in model container [2021-08-27 14:12:56,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:12:56,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:55" (2/3) ... [2021-08-27 14:12:56,295 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f893376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:12:56, skipping insertion in model container [2021-08-27 14:12:56,295 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:12:56,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:12:56" (3/3) ... [2021-08-27 14:12:56,297 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.14.c [2021-08-27 14:12:56,347 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:12:56,348 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:12:56,348 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:12:56,348 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:12:56,348 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:12:56,348 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:12:56,348 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:12:56,348 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:12:56,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:56,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 14:12:56,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:12:56,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:12:56,380 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:12:56,380 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 14:12:56,380 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:12:56,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:56,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 14:12:56,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:12:56,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:12:56,382 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:12:56,382 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 14:12:56,388 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~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;main_~c~0 := 0; 7#L12-3true [2021-08-27 14:12:56,388 INFO L793 eck$LassoCheckResult]: Loop: 7#L12-3true assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 3#L12-2true assume !(main_~y~0 > 0); 7#L12-3true [2021-08-27 14:12:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 14:12:56,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:56,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237472326] [2021-08-27 14:12:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:56,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,463 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:56,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1288, now seen corresponding path program 1 times [2021-08-27 14:12:56,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:56,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878592504] [2021-08-27 14:12:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:56,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:12:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:12:56,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:12:56,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878592504] [2021-08-27 14:12:56,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878592504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:12:56,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:12:56,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 14:12:56,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197254736] [2021-08-27 14:12:56,567 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:12:56,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:12:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:12:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:12:56,587 INFO L87 Difference]: Start difference. First operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:12:56,629 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-08-27 14:12:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:12:56,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-08-27 14:12:56,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:12:56,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 4 states and 5 transitions. [2021-08-27 14:12:56,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-08-27 14:12:56,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-08-27 14:12:56,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 5 transitions. [2021-08-27 14:12:56,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:12:56,637 INFO L681 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2021-08-27 14:12:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 5 transitions. [2021-08-27 14:12:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2021-08-27 14:12:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-08-27 14:12:56,677 INFO L704 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2021-08-27 14:12:56,677 INFO L587 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2021-08-27 14:12:56,677 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:12:56,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2021-08-27 14:12:56,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:12:56,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:12:56,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:12:56,678 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:12:56,678 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:12:56,678 INFO L791 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 27#L12-3 [2021-08-27 14:12:56,678 INFO L793 eck$LassoCheckResult]: Loop: 27#L12-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 24#L12-2 assume !!(main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1;main_~c~0 := 1 + main_~c~0; 25#L12-2 assume !(main_~y~0 > 0); 27#L12-3 [2021-08-27 14:12:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-08-27 14:12:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248187000] [2021-08-27 14:12:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:56,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,684 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:56,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 40007, now seen corresponding path program 1 times [2021-08-27 14:12:56,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:56,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305745375] [2021-08-27 14:12:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:56,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,695 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2021-08-27 14:12:56,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:56,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213423642] [2021-08-27 14:12:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:56,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,708 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:56,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:56,854 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:12:56,855 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:12:56,855 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:12:56,855 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:12:56,856 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:12:56,856 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:56,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:12:56,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:12:56,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration2_Loop [2021-08-27 14:12:56,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:12:56,858 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:12:56,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:56,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:56,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:56,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:56,998 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:12:56,998 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:12:57,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:12:57,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:57,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:12:57,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:12:57,044 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: [] [2021-08-27 14:12:57,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:12:57,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:12:57,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:57,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:12:57,101 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: [] [2021-08-27 14:12:57,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:12:57,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:12:57,132 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:57,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:12:57,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:12:57,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:57,218 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:12:57,218 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=7}, {ULTIMATE.start_main_~c~0=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2021-08-27 14:12:57,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:12:57,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:57,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 14:12:57,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:12:57,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:57,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 14:12:57,381 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:12:57,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,386 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:12:57,386 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:12:57,386 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:12:57,386 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:12:57,386 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:12:57,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,386 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:12:57,386 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:12:57,386 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration2_Loop [2021-08-27 14:12:57,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:12:57,387 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:12:57,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:57,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:57,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:57,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:57,488 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:12:57,492 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:12:57,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,501 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 14:12:57,506 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:12:57,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:12:57,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:12:57,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:12:57,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:12:57,521 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:12:57,521 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:12:57,533 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:12:57,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,564 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:12:57,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:12:57,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:12:57,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:12:57,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:12:57,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:12:57,578 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:12:57,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 14:12:57,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:12:57,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,632 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 14:12:57,635 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:12:57,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:12:57,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:12:57,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:12:57,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:12:57,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:12:57,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:12:57,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:12:57,660 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:12:57,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:12:57,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:12:57,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:12:57,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:12:57,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:12:57,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:12:57,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:12:57,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:12:57,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 14:12:57,728 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:12:57,734 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:12:57,734 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:12:57,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:57,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:57,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:57,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 14:12:57,739 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:12:57,740 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:12:57,740 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:12:57,740 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-08-27 14:12:57,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:57,767 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:12:57,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:12:57,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:12:57,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:12:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:12:57,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:12:57,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:12:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:12:57,843 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 14:12:57,844 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:57,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 6 states. [2021-08-27 14:12:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 14:12:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2021-08-27 14:12:57,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 3 letters. [2021-08-27 14:12:57,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:12:57,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 14:12:57,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:12:57,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 6 letters. [2021-08-27 14:12:57,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:12:57,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-08-27 14:12:57,884 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:12:57,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2021-08-27 14:12:57,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:12:57,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:12:57,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:12:57,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:12:57,884 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:12:57,885 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:12:57,885 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:12:57,885 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:12:57,885 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:12:57,885 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:12:57,885 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:12:57,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:12:57 BoogieIcfgContainer [2021-08-27 14:12:57,890 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:12:57,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:12:57,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:12:57,891 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:12:57,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:12:56" (3/4) ... [2021-08-27 14:12:57,894 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:12:57,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:12:57,896 INFO L168 Benchmark]: Toolchain (without parser) took 2066.84 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 39.8 MB in the beginning and 28.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:57,896 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:12:57,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.93 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 31.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:57,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.88 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 45.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:57,898 INFO L168 Benchmark]: Boogie Preprocessor took 16.22 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 44.2 MB in the end (delta: 859.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:12:57,898 INFO L168 Benchmark]: RCFGBuilder took 219.70 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 35.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:57,899 INFO L168 Benchmark]: BuchiAutomizer took 1600.15 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 35.4 MB in the beginning and 28.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:57,899 INFO L168 Benchmark]: Witness Printer took 3.37 ms. Allocated memory is still 79.7 MB. Free memory was 28.8 MB in the beginning and 28.5 MB in the end (delta: 282.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:12:57,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 164.93 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 31.3 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.88 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 45.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.22 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 44.2 MB in the end (delta: 859.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 219.70 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 35.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1600.15 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 35.4 MB in the beginning and 28.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.37 ms. Allocated memory is still 79.7 MB. Free memory was 28.8 MB in the beginning and 28.5 MB in the end (delta: 282.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 28.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 4 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax146 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp76 dnf100 smp100 tf107 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 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! [2021-08-27 14:12:57,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:58,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...