./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/loop-invgen/SpamAssassin-loop.i -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 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:22:57,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:22:57,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:22:57,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:22:57,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:22:57,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:22:57,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:22:57,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:22:57,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:22:57,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:22:57,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:22:57,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:22:57,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:22:57,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:22:57,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:22:57,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:22:57,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:22:57,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:22:57,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:22:57,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:22:57,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:22:57,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:22:57,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:22:57,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:22:57,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:22:57,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:22:57,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:22:57,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:22:58,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:22:58,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:22:58,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:22:58,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:22:58,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:22:58,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:22:58,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:22:58,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:22:58,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:22:58,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:22:58,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:22:58,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:22:58,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:22:58,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:22:58,027 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:22:58,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:22:58,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:22:58,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:22:58,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:22:58,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:22:58,033 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:22:58,033 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:22:58,033 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:22:58,033 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:22:58,034 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:22:58,034 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:22:58,034 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:22:58,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:22:58,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:22:58,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:22:58,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:22:58,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:22:58,036 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:22:58,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:22:58,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:22:58,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:22:58,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:22:58,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:22:58,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:22:58,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:22:58,038 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:22:58,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 [2021-12-21 22:22:58,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:22:58,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:22:58,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:22:58,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:22:58,273 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:22:58,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2021-12-21 22:22:58,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5c7fbd0/b541cb576e124881ae54e6e53fb94bca/FLAG6e98e9728 [2021-12-21 22:22:58,693 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:22:58,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2021-12-21 22:22:58,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5c7fbd0/b541cb576e124881ae54e6e53fb94bca/FLAG6e98e9728 [2021-12-21 22:22:59,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5c7fbd0/b541cb576e124881ae54e6e53fb94bca [2021-12-21 22:22:59,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:22:59,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:22:59,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:22:59,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:22:59,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:22:59,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae2feac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59, skipping insertion in model container [2021-12-21 22:22:59,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:22:59,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:22:59,310 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/loop-invgen/SpamAssassin-loop.i[893,906] [2021-12-21 22:22:59,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:22:59,326 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:22:59,334 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/loop-invgen/SpamAssassin-loop.i[893,906] [2021-12-21 22:22:59,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:22:59,355 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:22:59,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59 WrapperNode [2021-12-21 22:22:59,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:22:59,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:22:59,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:22:59,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:22:59,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,380 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 172 [2021-12-21 22:22:59,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:22:59,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:22:59,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:22:59,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:22:59,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:22:59,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:22:59,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:22:59,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:22:59,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (1/1) ... [2021-12-21 22:22:59,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:22:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:22:59,456 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) [2021-12-21 22:22:59,469 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 [2021-12-21 22:22:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:22:59,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:22:59,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:22:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:22:59,527 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:22:59,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:22:59,728 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:22:59,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:22:59,734 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:22:59,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:59 BoogieIcfgContainer [2021-12-21 22:22:59,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:22:59,736 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:22:59,736 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:22:59,753 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:22:59,754 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:59,754 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:22:59" (1/3) ... [2021-12-21 22:22:59,755 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@eb9985c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:22:59, skipping insertion in model container [2021-12-21 22:22:59,755 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:59,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:22:59" (2/3) ... [2021-12-21 22:22:59,756 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@eb9985c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:22:59, skipping insertion in model container [2021-12-21 22:22:59,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:22:59,756 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:59" (3/3) ... [2021-12-21 22:22:59,757 INFO L388 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2021-12-21 22:22:59,785 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:22:59,786 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:22:59,786 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:22:59,786 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:22:59,786 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:22:59,786 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:22:59,786 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:22:59,787 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:22:59,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 59 states have internal predecessors, (82), 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) [2021-12-21 22:22:59,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-12-21 22:22:59,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:22:59,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:22:59,815 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-21 22:22:59,815 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:22:59,815 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:22:59,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 60 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 59 states have internal predecessors, (82), 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) [2021-12-21 22:22:59,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-12-21 22:22:59,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:22:59,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:22:59,819 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-21 22:22:59,819 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-21 22:22:59,823 INFO L791 eck$LassoCheckResult]: Stem: 52#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(9, 2); 41#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post4#1, main_#t~post5#1, main_#t~post6#1, main_#t~post7#1, main_#t~post8#1, main_#t~post9#1, main_#t~post10#1, main_~len~0#1, main_~i~0#1, main_~j~0#1, main_~bufsize~0#1, main_~limit~0#1;havoc main_~len~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~bufsize~0#1;main_~bufsize~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 8#L31true assume !(main_~bufsize~0#1 < 0);main_~len~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~limit~0#1 := main_~bufsize~0#1 - 4;main_~i~0#1 := 0; 42#L34-2true [2021-12-21 22:22:59,824 INFO L793 eck$LassoCheckResult]: Loop: 42#L34-2true assume !!(main_~i~0#1 < main_~len~0#1);main_~j~0#1 := 0; 18#L35-2true assume !(main_~i~0#1 < main_~len~0#1 && main_~j~0#1 < main_~limit~0#1); 42#L34-2true [2021-12-21 22:22:59,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-12-21 22:22:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:59,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409893641] [2021-12-21 22:22:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:59,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:59,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:59,935 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1447, now seen corresponding path program 1 times [2021-12-21 22:22:59,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:59,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511818934] [2021-12-21 22:22:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:59,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:59,948 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:59,960 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:22:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:22:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash 28695946, now seen corresponding path program 1 times [2021-12-21 22:22:59,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:22:59,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879127646] [2021-12-21 22:22:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:22:59,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:22:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:59,982 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:22:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:22:59,994 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:00,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:23:00 BoogieIcfgContainer [2021-12-21 22:23:00,197 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:23:00,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:23:00,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:23:00,198 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:23:00,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:22:59" (3/4) ... [2021-12-21 22:23:00,200 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 22:23:00,226 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 22:23:00,226 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:23:00,227 INFO L158 Benchmark]: Toolchain (without parser) took 1098.56ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 40.3MB in the end (delta: 33.4MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,227 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:00,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.51ms. Allocated memory is still 104.9MB. Free memory was 73.5MB in the beginning and 80.9MB in the end (delta: -7.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.70ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 78.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,228 INFO L158 Benchmark]: Boogie Preprocessor took 41.40ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 78.0MB in the end (delta: 921.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,228 INFO L158 Benchmark]: RCFGBuilder took 310.43ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 65.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,229 INFO L158 Benchmark]: BuchiAutomizer took 461.44ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 41.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,229 INFO L158 Benchmark]: Witness Printer took 28.55ms. Allocated memory is still 104.9MB. Free memory was 41.8MB in the beginning and 40.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:23:00,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.51ms. Allocated memory is still 104.9MB. Free memory was 73.5MB in the beginning and 80.9MB in the end (delta: -7.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.70ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 78.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.40ms. Allocated memory is still 104.9MB. Free memory was 78.9MB in the beginning and 78.0MB in the end (delta: 921.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 310.43ms. Allocated memory is still 104.9MB. Free memory was 77.5MB in the beginning and 65.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 461.44ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 41.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 28.55ms. Allocated memory is still 104.9MB. Free memory was 41.8MB in the beginning and 40.3MB in the end (delta: 1.5MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. 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: LassoAnalysisResults: nont1 unkn0 SFLI0 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: 34]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@16530f30=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1b4e5282=0, len=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3beb1b6a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53377fbf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3271610c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42a59b3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@26aed99=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74e057a3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@557c412c=0, NULL=1, limit=-4, \result=0, bufsize=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7716ab8a=0, i=0, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 34]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L26] int len; [L27] int i; [L28] int j; [L29] int bufsize; [L30] bufsize = __VERIFIER_nondet_int() [L31] COND FALSE !(bufsize < 0) [L32] len = __VERIFIER_nondet_int() [L33] int limit = bufsize - 4; [L34] i = 0 Loop: [L34] COND TRUE i < len [L35] j = 0 [L35] COND FALSE !(i < len && j < limit) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 22:23:00,276 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)