./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/MinusBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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/MinusBuiltIn.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 9636ca5fb53dc225edebc26ddcbea46d2f84552600f047b3d42031c67fab75e2 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:00:31,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:00:31,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:00:31,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:00:31,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:00:31,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:00:31,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:00:31,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:00:31,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:00:31,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:00:31,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:00:31,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:00:31,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:00:31,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:00:31,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:00:31,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:00:31,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:00:31,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:00:31,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:00:31,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:00:31,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:00:31,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:00:31,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:00:31,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:00:31,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:00:31,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:00:31,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:00:31,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:00:31,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:00:31,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:00:31,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:00:31,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:00:31,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:00:31,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:00:31,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:00:31,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:00:31,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:00:31,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:00:31,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:00:31,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:00:31,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:00:31,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 23:00:31,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:00:31,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:00:31,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:00:31,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:00:31,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:00:31,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:00:31,186 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:00:31,187 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:00:31,187 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:00:31,187 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:00:31,187 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:00:31,188 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:00:31,188 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:00:31,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:00:31,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:00:31,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:00:31,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:00:31,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:00:31,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:00:31,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:00:31,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:00:31,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:00:31,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:00:31,191 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:00:31,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9636ca5fb53dc225edebc26ddcbea46d2f84552600f047b3d42031c67fab75e2 [2021-12-14 23:00:31,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:00:31,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:00:31,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:00:31,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:00:31,404 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:00:31,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/MinusBuiltIn.c [2021-12-14 23:00:31,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b423d922/4bbc1d042cba456590ac02e452bd259c/FLAGe4eeaaf90 [2021-12-14 23:00:31,763 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:00:31,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/MinusBuiltIn.c [2021-12-14 23:00:31,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b423d922/4bbc1d042cba456590ac02e452bd259c/FLAGe4eeaaf90 [2021-12-14 23:00:31,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b423d922/4bbc1d042cba456590ac02e452bd259c [2021-12-14 23:00:31,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:00:31,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:00:31,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:00:31,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:00:31,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:00:31,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48512c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31, skipping insertion in model container [2021-12-14 23:00:31,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:00:31,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:00:31,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:00:31,921 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:00:31,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:00:31,945 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:00:31,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31 WrapperNode [2021-12-14 23:00:31,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:00:31,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:00:31,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:00:31,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:00:31,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,969 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-14 23:00:31,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:00:31,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:00:31,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:00:31,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:00:31,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:00:31,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:00:31,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:00:31,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:00:31,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,014 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) [2021-12-14 23:00:32,032 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 [2021-12-14 23:00:32,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:00:32,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:00:32,077 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:00:32,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:00:32,130 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:00:32,134 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:00:32,134 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:00:32,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:00:32 BoogieIcfgContainer [2021-12-14 23:00:32,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:00:32,136 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:00:32,136 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:00:32,138 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:00:32,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:00:32,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:00:31" (1/3) ... [2021-12-14 23:00:32,140 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@811583e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:00:32, skipping insertion in model container [2021-12-14 23:00:32,140 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:00:32,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (2/3) ... [2021-12-14 23:00:32,143 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@811583e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:00:32, skipping insertion in model container [2021-12-14 23:00:32,143 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:00:32,143 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:00:32" (3/3) ... [2021-12-14 23:00:32,145 INFO L388 chiAutomizerObserver]: Analyzing ICFG MinusBuiltIn.c [2021-12-14 23:00:32,170 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:00:32,171 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:00:32,171 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:00:32,171 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:00:32,171 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:00:32,171 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:00:32,171 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:00:32,171 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:00:32,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-12-14 23:00:32,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-14 23:00:32,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:32,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:32,191 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:00:32,191 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 23:00:32,191 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:00:32,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2021-12-14 23:00:32,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-14 23:00:32,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:32,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:32,192 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:00:32,192 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 23:00:32,196 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~res~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0; 6#L13true assume !!(main_~x~0#1 < 2147483647); 8#L14-2true [2021-12-14 23:00:32,196 INFO L793 eck$LassoCheckResult]: Loop: 8#L14-2true assume !!(main_~x~0#1 > main_~y~0#1);main_~y~0#1 := 1 + main_~x~0#1; 8#L14-2true [2021-12-14 23:00:32,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-12-14 23:00:32,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765174675] [2021-12-14 23:00:32,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,247 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,272 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2021-12-14 23:00:32,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972026970] [2021-12-14 23:00:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,288 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,297 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2021-12-14 23:00:32,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138966519] [2021-12-14 23:00:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,310 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,377 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:32,378 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:32,378 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:32,378 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:32,378 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:32,379 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,379 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:32,379 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:32,379 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusBuiltIn.c_Iteration1_Loop [2021-12-14 23:00:32,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:32,379 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:32,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:32,469 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:32,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,472 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) [2021-12-14 23:00:32,473 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 [2021-12-14 23:00:32,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:32,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:32,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:32,503 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: [] [2021-12-14 23:00:32,528 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 [2021-12-14 23:00:32,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,530 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) [2021-12-14 23:00:32,531 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 [2021-12-14 23:00:32,533 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:32,533 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:32,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:32,551 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: [] [2021-12-14 23:00:32,568 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 [2021-12-14 23:00:32,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,570 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) [2021-12-14 23:00:32,572 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 [2021-12-14 23:00:32,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:32,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:32,616 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 [2021-12-14 23:00:32,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,617 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) [2021-12-14 23:00:32,618 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 [2021-12-14 23:00:32,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:32,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,287 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:34,295 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 [2021-12-14 23:00:34,295 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:34,295 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:34,295 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:34,295 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:34,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:34,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:34,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:34,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusBuiltIn.c_Iteration1_Loop [2021-12-14 23:00:34,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:34,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:34,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,363 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:34,366 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:34,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,376 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) [2021-12-14 23:00:34,377 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 [2021-12-14 23:00:34,380 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 [2021-12-14 23:00:34,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:34,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:34,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:34,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:34,392 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:00:34,392 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:00:34,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:00:34,422 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 [2021-12-14 23:00:34,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,424 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) [2021-12-14 23:00:34,424 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 [2021-12-14 23:00:34,426 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 [2021-12-14 23:00:34,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:34,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:34,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:34,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:34,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:34,434 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:34,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:34,449 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:34,452 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:34,452 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:34,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,456 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) [2021-12-14 23:00:34,458 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 [2021-12-14 23:00:34,459 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:34,459 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:34,459 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:34,459 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-14 23:00:34,499 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 [2021-12-14 23:00:34,501 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,589 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:34,609 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 [2021-12-14 23:00:34,622 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 [2021-12-14 23:00:34,629 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-12-14 23:00:34,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 20 states and 23 transitions. Complement of second has 5 states. [2021-12-14 23:00:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-12-14 23:00:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-14 23:00:34,674 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-14 23:00:34,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-14 23:00:34,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-14 23:00:34,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2021-12-14 23:00:34,677 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:00:34,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2021-12-14 23:00:34,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 23:00:34,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 23:00:34,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 23:00:34,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:00:34,679 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:00:34,679 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:00:34,679 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:00:34,680 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:00:34,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 23:00:34,680 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:00:34,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 23:00:34,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:00:34 BoogieIcfgContainer [2021-12-14 23:00:34,684 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:00:34,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:00:34,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:00:34,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:00:34,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:00:32" (3/4) ... [2021-12-14 23:00:34,686 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 23:00:34,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:00:34,687 INFO L158 Benchmark]: Toolchain (without parser) took 2907.62ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 69.5MB in the beginning and 90.5MB in the end (delta: -21.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:34,687 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:34,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.75ms. Allocated memory is still 98.6MB. Free memory was 69.4MB in the beginning and 76.1MB in the end (delta: -6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:00:34,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.48ms. Allocated memory is still 98.6MB. Free memory was 76.1MB in the beginning and 74.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:34,688 INFO L158 Benchmark]: Boogie Preprocessor took 11.64ms. Allocated memory is still 98.6MB. Free memory was 74.8MB in the beginning and 74.0MB in the end (delta: 846.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:00:34,688 INFO L158 Benchmark]: RCFGBuilder took 152.96ms. Allocated memory is still 98.6MB. Free memory was 74.0MB in the beginning and 66.0MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 23:00:34,689 INFO L158 Benchmark]: BuchiAutomizer took 2547.52ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.6MB in the beginning and 90.9MB in the end (delta: -25.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:34,689 INFO L158 Benchmark]: Witness Printer took 2.18ms. Allocated memory is still 119.5MB. Free memory was 90.9MB in the beginning and 90.5MB in the end (delta: 432.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:34,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.75ms. Allocated memory is still 98.6MB. Free memory was 69.4MB in the beginning and 76.1MB in the end (delta: -6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.48ms. Allocated memory is still 98.6MB. Free memory was 76.1MB in the beginning and 74.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.64ms. Allocated memory is still 98.6MB. Free memory was 74.8MB in the beginning and 74.0MB in the end (delta: 846.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 152.96ms. Allocated memory is still 98.6MB. Free memory was 74.0MB in the beginning and 66.0MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2547.52ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.6MB in the beginning and 90.9MB in the end (delta: -25.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.18ms. Allocated memory is still 119.5MB. Free memory was 90.9MB in the beginning and 90.5MB in the end (delta: 432.5kB). There was no memory consumed. Max. memory is 16.1GB. * 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 affine ranking function -1 * y + x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. 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: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 23:00:34,718 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE