./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD3.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/GCD3.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 88e7c75f540dddcc32c597b87fd18b0ea3baaf188ce55d074253e6818e0cf2b4 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:58:54,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:58:54,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:58:54,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:58:54,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:58:54,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:58:54,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:58:54,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:58:54,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:58:54,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:58:54,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:58:54,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:58:54,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:58:54,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:58:54,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:58:54,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:58:54,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:58:54,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:58:54,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:58:54,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:58:54,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:58:54,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:58:54,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:58:54,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:58:54,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:58:54,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:58:54,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:58:54,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:58:54,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:58:54,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:58:54,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:58:54,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:58:54,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:58:54,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:58:54,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:58:54,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:58:54,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:58:54,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:58:54,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:58:54,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:58:54,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:58:54,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-15 16:58:54,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:58:54,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:58:54,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:58:54,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:58:54,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:58:54,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:58:54,248 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:58:54,248 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 16:58:54,248 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 16:58:54,248 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 16:58:54,249 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 16:58:54,249 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 16:58:54,249 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 16:58:54,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:58:54,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:58:54,250 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 16:58:54,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:58:54,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 16:58:54,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:58:54,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:58:54,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:58:54,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:58:54,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:58:54,253 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 16:58:54,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88e7c75f540dddcc32c597b87fd18b0ea3baaf188ce55d074253e6818e0cf2b4 [2021-12-15 16:58:54,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:58:54,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:58:54,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:58:54,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:58:54,481 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:58:54,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD3.c [2021-12-15 16:58:54,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d0279d8/6014c5e2c9fa430493ef45041f1ecf5d/FLAGd7d25cb8d [2021-12-15 16:58:54,831 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:58:54,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD3.c [2021-12-15 16:58:54,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d0279d8/6014c5e2c9fa430493ef45041f1ecf5d/FLAGd7d25cb8d [2021-12-15 16:58:55,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d0279d8/6014c5e2c9fa430493ef45041f1ecf5d [2021-12-15 16:58:55,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:58:55,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:58:55,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:58:55,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:58:55,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:58:55,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18786379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55, skipping insertion in model container [2021-12-15 16:58:55,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:58:55,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:58:55,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:58:55,443 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:58:55,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:58:55,478 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:58:55,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55 WrapperNode [2021-12-15 16:58:55,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:58:55,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:58:55,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:58:55,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:58:55,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,507 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2021-12-15 16:58:55,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:58:55,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:58:55,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:58:55,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:58:55,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:58:55,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:58:55,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:58:55,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:58:55,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (1/1) ... [2021-12-15 16:58:55,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 16:58:55,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:58:55,569 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 16:58:55,587 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 16:58:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:58:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:58:55,645 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:58:55,647 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:58:55,750 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:58:55,756 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:58:55,756 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-15 16:58:55,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:58:55 BoogieIcfgContainer [2021-12-15 16:58:55,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:58:55,758 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 16:58:55,758 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 16:58:55,761 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 16:58:55,762 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:58:55,762 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 04:58:55" (1/3) ... [2021-12-15 16:58:55,763 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26f90dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:58:55, skipping insertion in model container [2021-12-15 16:58:55,763 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:58:55,763 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:58:55" (2/3) ... [2021-12-15 16:58:55,766 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26f90dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 04:58:55, skipping insertion in model container [2021-12-15 16:58:55,766 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 16:58:55,766 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:58:55" (3/3) ... [2021-12-15 16:58:55,768 INFO L388 chiAutomizerObserver]: Analyzing ICFG GCD3.c [2021-12-15 16:58:55,795 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 16:58:55,795 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 16:58:55,795 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 16:58:55,796 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 16:58:55,796 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 16:58:55,796 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 16:58:55,796 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 16:58:55,796 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 16:58:55,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 16:58:55,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-15 16:58:55,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:58:55,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:58:55,823 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:58:55,823 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:58:55,824 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 16:58:55,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 16:58:55,826 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-15 16:58:55,826 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:58:55,826 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:58:55,826 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:58:55,827 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:58:55,831 INFO L791 eck$LassoCheckResult]: Stem: 4#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_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~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; 12#L13-2true [2021-12-15 16:58:55,831 INFO L793 eck$LassoCheckResult]: Loop: 12#L13-2true assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 9#L17true assume 0 == main_~y~0#1;main_~y~0#1 := main_~y~0#1; 13#L21-2true assume !(main_~xtmp~0#1 > 0); 14#L31-2true assume !true; 8#L31-3true main_~y~0#1 := main_~xtmp~0#1; 6#L25-1true main_~x~0#1 := main_~tmp~0#1; 12#L13-2true [2021-12-15 16:58:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-15 16:58:55,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:55,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135891541] [2021-12-15 16:58:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:55,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:55,893 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:58:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:55,915 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:58:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1216595985, now seen corresponding path program 1 times [2021-12-15 16:58:55,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:55,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241966208] [2021-12-15 16:58:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:55,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:58:55,998 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 16:58:55,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:58:55,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241966208] [2021-12-15 16:58:56,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241966208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:58:56,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:58:56,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:58:56,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366169871] [2021-12-15 16:58:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:58:56,018 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 16:58:56,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:58:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:58:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:58:56,040 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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, 3 states have (on average 2.0) internal successors, (6), 2 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 16:58:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:58:56,066 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-12-15 16:58:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:58:56,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-12-15 16:58:56,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-15 16:58:56,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 14 transitions. [2021-12-15 16:58:56,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-15 16:58:56,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-15 16:58:56,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2021-12-15 16:58:56,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 16:58:56,078 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-15 16:58:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2021-12-15 16:58:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-15 16:58:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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 16:58:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-12-15 16:58:56,097 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-15 16:58:56,097 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-15 16:58:56,097 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 16:58:56,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2021-12-15 16:58:56,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-15 16:58:56,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:58:56,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:58:56,098 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:58:56,098 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:58:56,099 INFO L791 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 42#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 46#L13-2 [2021-12-15 16:58:56,099 INFO L793 eck$LassoCheckResult]: Loop: 46#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 39#L17 assume !(0 == main_~y~0#1); 40#L21 assume !(main_~y~0#1 < 0); 45#L21-2 assume !(main_~xtmp~0#1 > 0); 48#L31-2 assume !(main_~xtmp~0#1 < 0); 49#L31-3 main_~y~0#1 := main_~xtmp~0#1; 47#L25-1 main_~x~0#1 := main_~tmp~0#1; 46#L13-2 [2021-12-15 16:58:56,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-15 16:58:56,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715677624] [2021-12-15 16:58:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:56,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,108 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:58:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:58:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash -900852200, now seen corresponding path program 1 times [2021-12-15 16:58:56,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:56,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507879414] [2021-12-15 16:58:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:56,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:58:56,148 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 16:58:56,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:58:56,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507879414] [2021-12-15 16:58:56,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507879414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:58:56,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:58:56,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:58:56,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616870652] [2021-12-15 16:58:56,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:58:56,153 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 16:58:56,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:58:56,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:58:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:58:56,156 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 16:58:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:58:56,174 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-12-15 16:58:56,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:58:56,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2021-12-15 16:58:56,176 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-15 16:58:56,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 15 transitions. [2021-12-15 16:58:56,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-15 16:58:56,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-15 16:58:56,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2021-12-15 16:58:56,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 16:58:56,178 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-12-15 16:58:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2021-12-15 16:58:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2021-12-15 16:58:56,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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) [2021-12-15 16:58:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-12-15 16:58:56,180 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-15 16:58:56,180 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-15 16:58:56,180 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 16:58:56,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-12-15 16:58:56,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-15 16:58:56,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 16:58:56,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 16:58:56,182 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 16:58:56,182 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:58:56,183 INFO L791 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 72#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_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~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; 76#L13-2 [2021-12-15 16:58:56,183 INFO L793 eck$LassoCheckResult]: Loop: 76#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 69#L17 assume !(0 == main_~y~0#1); 70#L21 assume !(main_~y~0#1 < 0); 75#L21-2 assume main_~xtmp~0#1 > 0; 73#L26-2 assume !(main_~xtmp~0#1 >= main_~y~0#1); 74#L26-3 main_~y~0#1 := main_~xtmp~0#1; 77#L25-1 main_~x~0#1 := main_~tmp~0#1; 76#L13-2 [2021-12-15 16:58:56,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-15 16:58:56,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:56,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908735376] [2021-12-15 16:58:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:56,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,194 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:58:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:58:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash -901313945, now seen corresponding path program 1 times [2021-12-15 16:58:56,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:56,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166767785] [2021-12-15 16:58:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:56,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,209 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:58:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,220 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:58:56,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:58:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash 644982885, now seen corresponding path program 1 times [2021-12-15 16:58:56,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:58:56,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437819618] [2021-12-15 16:58:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:58:56,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:58:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,240 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 16:58:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 16:58:56,246 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 16:58:56,310 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 16:58:56,313 INFO L158 Benchmark]: Toolchain (without parser) took 1043.21ms. Allocated memory is still 113.2MB. Free memory was 80.2MB in the beginning and 49.8MB in the end (delta: 30.4MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2021-12-15 16:58:56,314 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 85.2MB in the beginning and 85.2MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:58:56,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.81ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 90.9MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:58:56,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.93ms. Allocated memory is still 113.2MB. Free memory was 90.9MB in the beginning and 89.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:58:56,318 INFO L158 Benchmark]: Boogie Preprocessor took 23.76ms. Allocated memory is still 113.2MB. Free memory was 89.0MB in the beginning and 88.2MB in the end (delta: 835.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 16:58:56,319 INFO L158 Benchmark]: RCFGBuilder took 225.04ms. Allocated memory is still 113.2MB. Free memory was 88.2MB in the beginning and 79.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 16:58:56,320 INFO L158 Benchmark]: BuchiAutomizer took 553.80ms. Allocated memory is still 113.2MB. Free memory was 79.8MB in the beginning and 49.8MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-15 16:58:56,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 85.2MB in the beginning and 85.2MB in the end (delta: 28.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.81ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 90.9MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.93ms. Allocated memory is still 113.2MB. Free memory was 90.9MB in the beginning and 89.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.76ms. Allocated memory is still 113.2MB. Free memory was 89.0MB in the beginning and 88.2MB in the end (delta: 835.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.04ms. Allocated memory is still 113.2MB. Free memory was 88.2MB in the beginning and 79.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 553.80ms. Allocated memory is still 113.2MB. Free memory was 79.8MB in the beginning and 49.8MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. 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 16:58:56,352 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