./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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/loops/while_infinite_loop_3.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 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 15:07:23,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 15:07:23,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 15:07:23,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 15:07:23,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 15:07:23,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 15:07:23,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 15:07:23,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 15:07:23,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 15:07:23,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 15:07:23,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 15:07:23,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 15:07:23,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 15:07:23,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 15:07:23,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 15:07:23,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 15:07:23,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 15:07:23,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 15:07:23,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 15:07:23,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 15:07:23,913 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 15:07:23,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 15:07:23,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 15:07:23,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 15:07:23,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 15:07:23,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 15:07:23,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 15:07:23,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 15:07:23,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 15:07:23,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 15:07:23,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 15:07:23,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 15:07:23,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 15:07:23,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 15:07:23,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 15:07:23,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 15:07:23,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 15:07:23,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 15:07:23,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 15:07:23,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 15:07:23,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 15:07:23,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 15:07:23,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 15:07:23,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 15:07:23,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 15:07:23,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 15:07:23,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 15:07:23,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 15:07:23,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 15:07:23,970 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 15:07:23,971 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 15:07:23,971 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 15:07:23,972 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 15:07:23,972 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 15:07:23,972 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 15:07:23,972 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 15:07:23,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 15:07:23,973 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 15:07:23,973 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 15:07:23,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 15:07:23,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 15:07:23,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 15:07:23,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 15:07:23,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 15:07:23,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 15:07:23,974 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 15:07:23,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 15:07:23,974 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 15:07:23,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 15:07:23,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 15:07:23,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 15:07:23,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 15:07:23,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 15:07:23,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 15:07:23,977 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 15:07:23,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 [2022-07-23 15:07:24,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 15:07:24,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 15:07:24,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 15:07:24,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 15:07:24,285 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 15:07:24,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2022-07-23 15:07:24,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484bf97b8/bbda132adf0d4999868ae25438a0d06a/FLAG52f10cac8 [2022-07-23 15:07:24,752 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 15:07:24,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2022-07-23 15:07:24,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484bf97b8/bbda132adf0d4999868ae25438a0d06a/FLAG52f10cac8 [2022-07-23 15:07:25,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/484bf97b8/bbda132adf0d4999868ae25438a0d06a [2022-07-23 15:07:25,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 15:07:25,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 15:07:25,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 15:07:25,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 15:07:25,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 15:07:25,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f70d10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25, skipping insertion in model container [2022-07-23 15:07:25,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 15:07:25,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 15:07:25,366 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/loops/while_infinite_loop_3.c[333,346] [2022-07-23 15:07:25,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:07:25,387 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 15:07:25,398 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/loops/while_infinite_loop_3.c[333,346] [2022-07-23 15:07:25,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:07:25,414 INFO L208 MainTranslator]: Completed translation [2022-07-23 15:07:25,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25 WrapperNode [2022-07-23 15:07:25,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 15:07:25,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 15:07:25,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 15:07:25,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 15:07:25,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,446 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 39 [2022-07-23 15:07:25,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 15:07:25,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 15:07:25,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 15:07:25,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 15:07:25,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 15:07:25,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 15:07:25,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 15:07:25,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 15:07:25,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (1/1) ... [2022-07-23 15:07:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:07:25,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:07:25,509 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) [2022-07-23 15:07:25,524 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 [2022-07-23 15:07:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 15:07:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 15:07:25,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 15:07:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 15:07:25,606 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 15:07:25,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 15:07:25,739 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 15:07:25,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 15:07:25,744 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 15:07:25,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:25 BoogieIcfgContainer [2022-07-23 15:07:25,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 15:07:25,747 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 15:07:25,747 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 15:07:25,754 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 15:07:25,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:25,756 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 03:07:25" (1/3) ... [2022-07-23 15:07:25,757 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36626fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:07:25, skipping insertion in model container [2022-07-23 15:07:25,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:25,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:25" (2/3) ... [2022-07-23 15:07:25,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36626fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:07:25, skipping insertion in model container [2022-07-23 15:07:25,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:25,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:25" (3/3) ... [2022-07-23 15:07:25,760 INFO L354 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3.c [2022-07-23 15:07:25,819 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 15:07:25,819 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 15:07:25,819 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 15:07:25,820 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 15:07:25,820 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 15:07:25,820 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 15:07:25,820 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 15:07:25,820 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 15:07:25,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2022-07-23 15:07:25,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-23 15:07:25,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:25,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:25,848 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:25,848 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-23 15:07:25,848 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 15:07:25,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2022-07-23 15:07:25,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-23 15:07:25,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:25,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:25,852 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:25,853 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-23 15:07:25,859 INFO L752 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(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 12#L26-2true [2022-07-23 15:07:25,859 INFO L754 eck$LassoCheckResult]: Loop: 12#L26-2true assume !false;assume { :begin_inline_eval } true; 2#L16loopEntrytrue assume false; 13#L16-2true assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11#L6true assume !(0 == __VERIFIER_assert_~cond#1); 5#L6-2true assume { :end_inline___VERIFIER_assert } true; 12#L26-2true [2022-07-23 15:07:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 15:07:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:25,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059413814] [2022-07-23 15:07:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:25,957 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:26,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash 39349172, now seen corresponding path program 1 times [2022-07-23 15:07:26,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:26,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748296106] [2022-07-23 15:07:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:07:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:07:26,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:07:26,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748296106] [2022-07-23 15:07:26,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748296106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 15:07:26,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 15:07:26,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 15:07:26,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109732200] [2022-07-23 15:07:26,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 15:07:26,043 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 15:07:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:07:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 15:07:26,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 15:07:26,073 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 15:07:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:07:26,077 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2022-07-23 15:07:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 15:07:26,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 8 transitions. [2022-07-23 15:07:26,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 15:07:26,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2022-07-23 15:07:26,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-23 15:07:26,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-23 15:07:26,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2022-07-23 15:07:26,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:07:26,089 INFO L369 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-07-23 15:07:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2022-07-23 15:07:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-07-23 15:07:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2022-07-23 15:07:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-07-23 15:07:26,111 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-07-23 15:07:26,111 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-07-23 15:07:26,112 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 15:07:26,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2022-07-23 15:07:26,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 15:07:26,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:26,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:26,114 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:26,114 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-23 15:07:26,114 INFO L752 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 34#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 36#L26-2 [2022-07-23 15:07:26,114 INFO L754 eck$LassoCheckResult]: Loop: 36#L26-2 assume !false;assume { :begin_inline_eval } true; 31#L16loopEntry assume !false;~x~0 := 0; 32#L16-2 assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 37#L6 assume !(0 == __VERIFIER_assert_~cond#1); 35#L6-2 assume { :end_inline___VERIFIER_assert } true; 36#L26-2 [2022-07-23 15:07:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:26,115 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-07-23 15:07:26,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:26,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319310584] [2022-07-23 15:07:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,135 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 39408754, now seen corresponding path program 1 times [2022-07-23 15:07:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:26,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894204305] [2022-07-23 15:07:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,162 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1810848240, now seen corresponding path program 1 times [2022-07-23 15:07:26,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:26,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177118658] [2022-07-23 15:07:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,189 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:26,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:26,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 03:07:26 BoogieIcfgContainer [2022-07-23 15:07:26,441 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 15:07:26,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 15:07:26,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 15:07:26,442 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 15:07:26,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:25" (3/4) ... [2022-07-23 15:07:26,445 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-23 15:07:26,472 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 15:07:26,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 15:07:26,473 INFO L158 Benchmark]: Toolchain (without parser) took 1295.84ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 74.8MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:26,474 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 80.5MB in the beginning and 80.4MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:26,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.46ms. Allocated memory is still 100.7MB. Free memory was 64.2MB in the beginning and 77.6MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:07:26,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.87ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:07:26,475 INFO L158 Benchmark]: Boogie Preprocessor took 27.30ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 75.3MB in the end (delta: 974.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:26,475 INFO L158 Benchmark]: RCFGBuilder took 269.59ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 66.2MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 15:07:26,476 INFO L158 Benchmark]: BuchiAutomizer took 694.32ms. Allocated memory is still 100.7MB. Free memory was 65.8MB in the beginning and 76.3MB in the end (delta: -10.5MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-07-23 15:07:26,476 INFO L158 Benchmark]: Witness Printer took 30.65ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 74.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:26,478 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 100.7MB. Free memory was 80.5MB in the beginning and 80.4MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.46ms. Allocated memory is still 100.7MB. Free memory was 64.2MB in the beginning and 77.6MB in the end (delta: -13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.87ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.30ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 75.3MB in the end (delta: 974.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.59ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 66.2MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 694.32ms. Allocated memory is still 100.7MB. Free memory was 65.8MB in the beginning and 76.3MB in the end (delta: -10.5MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Witness Printer took 30.65ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 74.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, \old(cond)=1, NULL=1, x=0, \result=0, cond=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=0 [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-23 15:07:26,511 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)