./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/PastaB15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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/PastaB15.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 856b26ed1b95b9c5e409c9e42274459ceef7cfabfe29e933603f5e3c1c7ce07f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:59:06,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:59:06,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:59:06,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:59:06,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:59:06,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:59:06,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:59:06,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:59:06,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:59:06,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:59:06,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:59:06,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:59:06,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:59:06,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:59:06,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:59:06,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:59:06,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:59:06,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:59:06,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:59:06,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:59:06,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:59:06,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:59:06,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:59:06,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:59:06,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:59:06,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:59:06,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:59:06,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:59:06,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:59:06,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:59:06,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:59:06,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:59:06,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:59:06,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:59:06,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:59:06,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:59:06,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:59:06,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:59:06,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:59:06,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:59:06,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:59:06,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-15 16:59:06,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:59:06,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:59:06,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:59:06,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:59:06,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:59:06,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:59:06,197 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:59:06,198 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 16:59:06,198 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 16:59:06,198 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 16:59:06,199 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 16:59:06,199 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 16:59:06,199 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 16:59:06,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:59:06,200 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:59:06,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:59:06,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:59:06,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 16:59:06,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 16:59:06,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 16:59:06,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:59:06,201 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 16:59:06,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:59:06,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 16:59:06,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:59:06,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:59:06,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:59:06,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:59:06,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:59:06,204 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 16:59:06,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 856b26ed1b95b9c5e409c9e42274459ceef7cfabfe29e933603f5e3c1c7ce07f [2021-12-15 16:59:06,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:59:06,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:59:06,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:59:06,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:59:06,468 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:59:06,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/PastaB15.c [2021-12-15 16:59:06,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1339905/10fae8a52f0c430da6c226b1e3500c0b/FLAG18e0c9719 [2021-12-15 16:59:06,918 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:59:06,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/PastaB15.c [2021-12-15 16:59:06,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1339905/10fae8a52f0c430da6c226b1e3500c0b/FLAG18e0c9719 [2021-12-15 16:59:06,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1339905/10fae8a52f0c430da6c226b1e3500c0b [2021-12-15 16:59:06,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:59:06,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:59:06,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:06,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:59:06,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:59:06,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:06" (1/1) ... [2021-12-15 16:59:06,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b234092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:06, skipping insertion in model container [2021-12-15 16:59:06,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:59:06" (1/1) ... [2021-12-15 16:59:06,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:59:06,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:59:07,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:07,154 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:59:07,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:59:07,182 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:59:07,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07 WrapperNode [2021-12-15 16:59:07,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:59:07,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:07,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:59:07,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:59:07,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,210 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-15 16:59:07,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:59:07,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:59:07,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:59:07,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:59:07,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:59:07,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:59:07,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:59:07,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:59:07,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (1/1) ... [2021-12-15 16:59:07,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 16:59:07,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:59:07,269 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) [2021-12-15 16:59:07,295 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 [2021-12-15 16:59:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:59:07,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:59:07,367 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:59:07,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:59:07,452 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:59:07,459 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:59:07,459 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 16:59:07,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:07 BoogieIcfgContainer [2021-12-15 16:59:07,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:59:07,462 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 16:59:07,462 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 16:59:07,465 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 16:59:07,465 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:07,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 04:59:06" (1/3) ... [2021-12-15 16:59:07,467 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c5b2c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:07, skipping insertion in model container [2021-12-15 16:59:07,467 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:07,467 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:59:07" (2/3) ... [2021-12-15 16:59:07,468 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c5b2c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:59:07, skipping insertion in model container [2021-12-15 16:59:07,468 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:59:07,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:59:07" (3/3) ... [2021-12-15 16:59:07,470 INFO L388 chiAutomizerObserver]: Analyzing ICFG PastaB15.c [2021-12-15 16:59:07,513 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 16:59:07,514 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 16:59:07,514 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 16:59:07,514 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 16:59:07,514 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 16:59:07,514 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 16:59:07,514 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 16:59:07,515 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 16:59:07,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-15 16:59:07,551 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-15 16:59:07,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:07,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:07,556 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:59:07,556 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-15 16:59:07,557 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 16:59:07,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-15 16:59:07,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-15 16:59:07,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:07,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:07,559 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:59:07,560 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-15 16:59:07,565 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 8#L14-3true [2021-12-15 16:59:07,568 INFO L793 eck$LassoCheckResult]: Loop: 8#L14-3true assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > main_~z~0#1); 9#L14-2true assume !(main_~y~0#1 > main_~z~0#1); 8#L14-3true [2021-12-15 16:59:07,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-15 16:59:07,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:07,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382259706] [2021-12-15 16:59:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:07,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,657 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,680 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1320, now seen corresponding path program 1 times [2021-12-15 16:59:07,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:07,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521787832] [2021-12-15 16:59:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:07,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:59:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:59:07,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:59:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521787832] [2021-12-15 16:59:07,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521787832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:59:07,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:59:07,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-15 16:59:07,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956802391] [2021-12-15 16:59:07,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:59:07,774 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 16:59:07,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:59:07,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:59:07,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:59:07,806 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-15 16:59:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:59:07,834 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-12-15 16:59:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:59:07,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-12-15 16:59:07,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 16:59:07,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-12-15 16:59:07,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-15 16:59:07,860 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-15 16:59:07,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-12-15 16:59:07,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 16:59:07,860 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-15 16:59:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-12-15 16:59:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-12-15 16:59:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-15 16:59:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-12-15 16:59:07,880 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-15 16:59:07,880 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-15 16:59:07,880 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 16:59:07,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-12-15 16:59:07,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 16:59:07,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:59:07,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:59:07,881 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:59:07,882 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-15 16:59:07,882 INFO L791 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 27#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 28#L14-3 [2021-12-15 16:59:07,882 INFO L793 eck$LassoCheckResult]: Loop: 28#L14-3 assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > main_~z~0#1); 29#L14-2 assume !!(main_~y~0#1 > main_~z~0#1);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1; 30#L14-2 assume !(main_~y~0#1 > main_~z~0#1); 28#L14-3 [2021-12-15 16:59:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-15 16:59:07,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:07,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280491218] [2021-12-15 16:59:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:07,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,886 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,888 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:07,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:07,889 INFO L85 PathProgramCache]: Analyzing trace with hash 41000, now seen corresponding path program 1 times [2021-12-15 16:59:07,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:07,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335221082] [2021-12-15 16:59:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:07,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,894 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:07,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:59:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2021-12-15 16:59:07,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:59:07,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305661622] [2021-12-15 16:59:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:59:07,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:59:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:59:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:59:07,912 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:59:07,965 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:855) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 16:59:07,969 INFO L158 Benchmark]: Toolchain (without parser) took 1031.21ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 71.9MB in the beginning and 67.0MB in the end (delta: 4.9MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2021-12-15 16:59:07,969 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:07,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.21ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 71.7MB in the beginning and 102.2MB in the end (delta: -30.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:59:07,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.98ms. Allocated memory is still 123.7MB. Free memory was 102.2MB in the beginning and 100.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:59:07,971 INFO L158 Benchmark]: Boogie Preprocessor took 15.51ms. Allocated memory is still 123.7MB. Free memory was 100.8MB in the beginning and 99.9MB in the end (delta: 941.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:59:07,972 INFO L158 Benchmark]: RCFGBuilder took 232.56ms. Allocated memory is still 123.7MB. Free memory was 99.9MB in the beginning and 92.0MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 16:59:07,972 INFO L158 Benchmark]: BuchiAutomizer took 505.49ms. Allocated memory is still 123.7MB. Free memory was 92.0MB in the beginning and 67.0MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 16:59:07,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.21ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 71.7MB in the beginning and 102.2MB in the end (delta: -30.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.98ms. Allocated memory is still 123.7MB. Free memory was 102.2MB in the beginning and 100.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.51ms. Allocated memory is still 123.7MB. Free memory was 100.8MB in the beginning and 99.9MB in the end (delta: 941.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 232.56ms. Allocated memory is still 123.7MB. Free memory was 99.9MB in the beginning and 92.0MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 505.49ms. Allocated memory is still 123.7MB. Free memory was 92.0MB in the beginning and 67.0MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:59:08,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable