./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/recursive-simple/id_i15_o15-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:20:05,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:20:05,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:20:06,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:20:06,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:20:06,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:20:06,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:20:06,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:20:06,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:20:06,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:20:06,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:20:06,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:20:06,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:20:06,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:20:06,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:20:06,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:20:06,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:20:06,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:20:06,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:20:06,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:20:06,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:20:06,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:20:06,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:20:06,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:20:06,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:20:06,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:20:06,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:20:06,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:20:06,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:20:06,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:20:06,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:20:06,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:20:06,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:20:06,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:20:06,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:20:06,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:20:06,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:20:06,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:20:06,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:20:06,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:20:06,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:20:06,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:20:06,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:20:06,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:20:06,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:20:06,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:20:06,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:20:06,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:20:06,103 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:20:06,104 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:20:06,104 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:20:06,104 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:20:06,105 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:20:06,105 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:20:06,105 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:20:06,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:20:06,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:20:06,105 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:20:06,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:20:06,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:20:06,107 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:20:06,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:20:06,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:20:06,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:20:06,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:20:06,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:20:06,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:20:06,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:20:06,109 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:20:06,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109f1b0f7b496206cc9c53b0a3b6a7c393044a874053b245259453c5fb39b930 [2021-12-15 17:20:06,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:20:06,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:20:06,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:20:06,298 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:20:06,298 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:20:06,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2021-12-15 17:20:06,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3850e4e19/681b456a67cd4b03b56ca1b49d1c942d/FLAG118e4a4b5 [2021-12-15 17:20:06,644 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:20:06,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c [2021-12-15 17:20:06,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3850e4e19/681b456a67cd4b03b56ca1b49d1c942d/FLAG118e4a4b5 [2021-12-15 17:20:07,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3850e4e19/681b456a67cd4b03b56ca1b49d1c942d [2021-12-15 17:20:07,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:20:07,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:20:07,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:20:07,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:20:07,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:20:07,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ac882e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07, skipping insertion in model container [2021-12-15 17:20:07,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:20:07,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:20:07,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c[454,467] [2021-12-15 17:20:07,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:20:07,255 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:20:07,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i15_o15-2.c[454,467] [2021-12-15 17:20:07,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:20:07,277 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:20:07,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07 WrapperNode [2021-12-15 17:20:07,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:20:07,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:20:07,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:20:07,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:20:07,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,302 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2021-12-15 17:20:07,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:20:07,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:20:07,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:20:07,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:20:07,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:20:07,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:20:07,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:20:07,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:20:07,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (1/1) ... [2021-12-15 17:20:07,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:20:07,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:20:07,352 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 17:20:07,361 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 17:20:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:20:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:20:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:20:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:20:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-12-15 17:20:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-12-15 17:20:07,428 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:20:07,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:20:07,497 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:20:07,501 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:20:07,502 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 17:20:07,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:07 BoogieIcfgContainer [2021-12-15 17:20:07,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:20:07,515 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:20:07,515 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:20:07,517 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:20:07,518 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:07,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:20:07" (1/3) ... [2021-12-15 17:20:07,519 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d60fc55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:20:07, skipping insertion in model container [2021-12-15 17:20:07,519 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:07,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:07" (2/3) ... [2021-12-15 17:20:07,520 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d60fc55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:20:07, skipping insertion in model container [2021-12-15 17:20:07,520 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:07,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:07" (3/3) ... [2021-12-15 17:20:07,521 INFO L388 chiAutomizerObserver]: Analyzing ICFG id_i15_o15-2.c [2021-12-15 17:20:07,551 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:20:07,552 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:20:07,552 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:20:07,552 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:20:07,552 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:20:07,552 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:20:07,552 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:20:07,552 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:20:07,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 17:20:07,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 17:20:07,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:20:07,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:20:07,597 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 17:20:07,597 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-15 17:20:07,601 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:20:07,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 17:20:07,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-15 17:20:07,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:20:07,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:20:07,603 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 17:20:07,603 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-15 17:20:07,607 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_~input~0#1, main_~result~0#1;main_~input~0#1 := 15; 14#L13true call main_#t~ret5#1 := id(main_~input~0#1);< 12#idENTRYtrue [2021-12-15 17:20:07,608 INFO L793 eck$LassoCheckResult]: Loop: 12#idENTRYtrue ~x := #in~x; 8#L7true assume !(0 == ~x); 7#L8true call #t~ret4 := id(~x - 1);< 12#idENTRYtrue [2021-12-15 17:20:07,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:20:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 29876, now seen corresponding path program 1 times [2021-12-15 17:20:07,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:20:07,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502669223] [2021-12-15 17:20:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:20:07,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:20:07,654 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.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkFeasibilityAndComputeInterpolants(LassoCheck.java:924) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkStemFeasibility(LassoCheck.java:879) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:794) 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 17:20:07,657 INFO L158 Benchmark]: Toolchain (without parser) took 573.88ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 54.8MB in the end (delta: 16.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-12-15 17:20:07,658 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:07,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.14ms. Allocated memory is still 98.6MB. Free memory was 71.0MB in the beginning and 74.8MB in the end (delta: -3.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-12-15 17:20:07,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.78ms. Allocated memory is still 98.6MB. Free memory was 74.8MB in the beginning and 73.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:07,659 INFO L158 Benchmark]: Boogie Preprocessor took 19.21ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 72.6MB in the end (delta: 804.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:07,660 INFO L158 Benchmark]: RCFGBuilder took 191.09ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 64.3MB in the end (delta: 8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 17:20:07,660 INFO L158 Benchmark]: BuchiAutomizer took 140.66ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 54.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:20:07,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.14ms. Allocated memory is still 98.6MB. Free memory was 71.0MB in the beginning and 74.8MB in the end (delta: -3.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.78ms. Allocated memory is still 98.6MB. Free memory was 74.8MB in the beginning and 73.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.21ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 72.6MB in the end (delta: 804.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 191.09ms. Allocated memory is still 98.6MB. Free memory was 72.6MB in the beginning and 64.3MB in the end (delta: 8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 140.66ms. Allocated memory is still 98.6MB. Free memory was 64.3MB in the beginning and 54.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. 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 17:20:07,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable