./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 e19ca921 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-dev-e19ca92 [2021-12-22 20:12:52,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 20:12:52,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 20:12:52,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 20:12:52,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 20:12:52,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 20:12:52,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 20:12:52,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 20:12:52,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 20:12:52,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 20:12:52,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 20:12:52,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 20:12:52,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 20:12:53,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 20:12:53,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 20:12:53,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 20:12:53,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 20:12:53,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 20:12:53,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 20:12:53,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 20:12:53,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 20:12:53,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 20:12:53,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 20:12:53,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 20:12:53,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 20:12:53,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 20:12:53,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 20:12:53,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 20:12:53,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 20:12:53,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 20:12:53,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 20:12:53,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 20:12:53,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 20:12:53,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 20:12:53,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 20:12:53,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 20:12:53,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 20:12:53,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 20:12:53,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 20:12:53,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 20:12:53,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 20:12:53,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-22 20:12:53,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 20:12:53,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 20:12:53,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 20:12:53,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 20:12:53,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 20:12:53,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 20:12:53,059 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 20:12:53,059 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 20:12:53,059 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 20:12:53,059 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 20:12:53,060 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 20:12:53,060 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 20:12:53,060 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 20:12:53,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 20:12:53,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 20:12:53,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 20:12:53,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 20:12:53,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 20:12:53,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 20:12:53,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 20:12:53,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 20:12:53,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 20:12:53,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 20:12:53,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 20:12:53,062 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 20:12:53,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 20:12:53,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 20:12:53,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 20:12:53,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 20:12:53,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 20:12:53,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 20:12:53,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 20:12:53,065 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 20:12:53,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 [2021-12-22 20:12:53,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 20:12:53,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 20:12:53,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 20:12:53,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 20:12:53,278 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 20:12:53,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-12-22 20:12:53,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ed32d7b/f8068e2d6cbd4ca1a2de4005e4db2740/FLAG0bd18fd3c [2021-12-22 20:12:53,652 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 20:12:53,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-12-22 20:12:53,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ed32d7b/f8068e2d6cbd4ca1a2de4005e4db2740/FLAG0bd18fd3c [2021-12-22 20:12:53,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ed32d7b/f8068e2d6cbd4ca1a2de4005e4db2740 [2021-12-22 20:12:53,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 20:12:53,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 20:12:53,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 20:12:53,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 20:12:53,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 20:12:53,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ee04d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53, skipping insertion in model container [2021-12-22 20:12:53,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 20:12:53,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 20:12:53,844 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] [2021-12-22 20:12:53,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:12:53,858 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 20:12:53,867 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] [2021-12-22 20:12:53,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:12:53,879 INFO L208 MainTranslator]: Completed translation [2021-12-22 20:12:53,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53 WrapperNode [2021-12-22 20:12:53,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 20:12:53,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 20:12:53,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 20:12:53,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 20:12:53,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,903 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 39 [2021-12-22 20:12:53,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 20:12:53,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 20:12:53,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 20:12:53,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 20:12:53,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 20:12:53,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 20:12:53,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 20:12:53,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 20:12:53,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (1/1) ... [2021-12-22 20:12:53,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:12:53,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:12:53,947 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) [2021-12-22 20:12:53,966 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 [2021-12-22 20:12:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 20:12:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 20:12:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 20:12:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 20:12:54,014 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 20:12:54,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 20:12:54,082 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 20:12:54,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 20:12:54,086 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 20:12:54,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:54 BoogieIcfgContainer [2021-12-22 20:12:54,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 20:12:54,092 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 20:12:54,092 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 20:12:54,094 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 20:12:54,096 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:12:54,096 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 08:12:53" (1/3) ... [2021-12-22 20:12:54,097 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@472c02e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:12:54, skipping insertion in model container [2021-12-22 20:12:54,097 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:12:54,097 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:53" (2/3) ... [2021-12-22 20:12:54,097 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@472c02e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:12:54, skipping insertion in model container [2021-12-22 20:12:54,097 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:12:54,097 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:54" (3/3) ... [2021-12-22 20:12:54,099 INFO L388 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3.c [2021-12-22 20:12:54,138 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 20:12:54,138 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 20:12:54,138 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 20:12:54,138 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 20:12:54,139 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 20:12:54,139 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 20:12:54,139 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 20:12:54,139 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 20:12:54,149 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) [2021-12-22 20:12:54,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-22 20:12:54,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:12:54,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:12:54,166 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 20:12:54,166 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-22 20:12:54,166 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 20:12:54,167 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) [2021-12-22 20:12:54,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-22 20:12:54,169 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:12:54,169 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:12:54,170 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 20:12:54,170 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-22 20:12:54,174 INFO L791 eck$LassoCheckResult]: Stem: 5#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; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 13#L26-2true [2021-12-22 20:12:54,175 INFO L793 eck$LassoCheckResult]: Loop: 13#L26-2true assume !false;assume { :begin_inline_eval } true; 3#L16loopEntrytrue assume false; 14#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; 12#L6true assume !(0 == __VERIFIER_assert_~cond#1); 6#L6-2true assume { :end_inline___VERIFIER_assert } true; 13#L26-2true [2021-12-22 20:12:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:12:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-22 20:12:54,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:12:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347519264] [2021-12-22 20:12:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:12:54,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:12:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,253 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:12:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:12:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:12:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 39349172, now seen corresponding path program 1 times [2021-12-22 20:12:54,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:12:54,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204463753] [2021-12-22 20:12:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:12:54,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:12:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:12:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:12:54,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:12:54,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204463753] [2021-12-22 20:12:54,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204463753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:12:54,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:12:54,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 20:12:54,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965806305] [2021-12-22 20:12:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:12:54,337 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 20:12:54,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:12:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 20:12:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 20:12:54,368 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) [2021-12-22 20:12:54,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:12:54,371 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-12-22 20:12:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 20:12:54,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 8 transitions. [2021-12-22 20:12:54,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-22 20:12:54,379 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2021-12-22 20:12:54,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-22 20:12:54,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-22 20:12:54,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2021-12-22 20:12:54,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:12:54,381 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-22 20:12:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2021-12-22 20:12:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-22 20:12:54,398 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) [2021-12-22 20:12:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-12-22 20:12:54,399 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-22 20:12:54,399 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-22 20:12:54,400 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 20:12:54,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2021-12-22 20:12:54,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-22 20:12:54,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:12:54,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:12:54,401 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 20:12:54,402 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-22 20:12:54,402 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 34#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 36#L26-2 [2021-12-22 20:12:54,402 INFO L793 eck$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 [2021-12-22 20:12:54,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:12:54,403 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-22 20:12:54,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:12:54,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240783570] [2021-12-22 20:12:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:12:54,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:12:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,416 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:12:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:12:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:12:54,430 INFO L85 PathProgramCache]: Analyzing trace with hash 39408754, now seen corresponding path program 1 times [2021-12-22 20:12:54,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:12:54,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762979710] [2021-12-22 20:12:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:12:54,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:12:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,444 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:12:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,456 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:12:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:12:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1810848240, now seen corresponding path program 1 times [2021-12-22 20:12:54,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:12:54,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324190597] [2021-12-22 20:12:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:12:54,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:12:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,475 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:12:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:12:54,483 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:12:54,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 08:12:54 BoogieIcfgContainer [2021-12-22 20:12:54,699 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 20:12:54,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 20:12:54,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 20:12:54,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 20:12:54,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:54" (3/4) ... [2021-12-22 20:12:54,702 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 20:12:54,727 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 20:12:54,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 20:12:54,729 INFO L158 Benchmark]: Toolchain (without parser) took 1050.48ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 67.1MB in the beginning and 83.1MB in the end (delta: -15.9MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-22 20:12:54,729 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 53.7MB in the beginning and 53.6MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 20:12:54,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.16ms. Allocated memory is still 96.5MB. Free memory was 66.9MB in the beginning and 72.1MB in the end (delta: -5.2MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-22 20:12:54,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.53ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 70.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:12:54,733 INFO L158 Benchmark]: Boogie Preprocessor took 18.18ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 69.9MB in the end (delta: 695.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 20:12:54,734 INFO L158 Benchmark]: RCFGBuilder took 167.69ms. Allocated memory is still 96.5MB. Free memory was 69.6MB in the beginning and 61.5MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 20:12:54,734 INFO L158 Benchmark]: BuchiAutomizer took 607.24ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 61.5MB in the beginning and 85.1MB in the end (delta: -23.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-12-22 20:12:54,735 INFO L158 Benchmark]: Witness Printer took 28.20ms. Allocated memory is still 123.7MB. Free memory was 85.1MB in the beginning and 83.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:12:54,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 53.7MB in the beginning and 53.6MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.16ms. Allocated memory is still 96.5MB. Free memory was 66.9MB in the beginning and 72.1MB in the end (delta: -5.2MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.53ms. Allocated memory is still 96.5MB. Free memory was 72.1MB in the beginning and 70.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.18ms. Allocated memory is still 96.5MB. Free memory was 70.6MB in the beginning and 69.9MB in the end (delta: 695.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 167.69ms. Allocated memory is still 96.5MB. Free memory was 69.6MB in the beginning and 61.5MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 607.24ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 61.5MB in the beginning and 85.1MB in the end (delta: -23.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 28.20ms. Allocated memory is still 123.7MB. Free memory was 85.1MB in the beginning and 83.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 0.5s 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 7 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 - 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! [2021-12-22 20:12:54,769 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)