./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 20ed64ec 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 515641d47b866a31074baa0701cc4e191cb58e69 .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:21:46,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:21:46,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:21:46,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:21:46,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:21:46,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:21:46,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:21:46,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:21:46,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:21:46,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:21:46,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:21:46,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:21:46,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:21:46,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:21:46,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:21:46,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:21:46,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:21:46,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:21:46,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:21:46,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:21:46,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:21:46,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:21:46,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:21:46,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:21:46,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:21:46,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:21:46,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:21:46,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:21:46,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:21:46,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:21:46,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:21:46,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:21:46,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:21:46,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:21:46,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:21:46,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:21:46,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:21:46,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:21:46,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:21:46,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:21:46,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:21:46,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:21:46,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:21:46,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:21:46,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:21:46,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:21:46,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:21:46,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:21:46,647 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:21:46,647 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:21:46,647 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:21:46,647 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:21:46,648 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:21:46,648 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:21:46,648 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:21:46,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:21:46,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:21:46,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:21:46,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:21:46,650 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:21:46,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:21:46,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:21:46,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:21:46,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:21:46,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:21:46,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:21:46,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:21:46,651 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:21:46,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 515641d47b866a31074baa0701cc4e191cb58e69 [2021-08-27 15:21:46,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:21:46,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:21:46,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:21:46,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:21:46,902 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:21:46,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2021-08-27 15:21:46,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a925a379/42118732cc6c4b66b9f90263d43492c0/FLAG8f4db8095 [2021-08-27 15:21:47,281 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:21:47,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2021-08-27 15:21:47,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a925a379/42118732cc6c4b66b9f90263d43492c0/FLAG8f4db8095 [2021-08-27 15:21:47,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a925a379/42118732cc6c4b66b9f90263d43492c0 [2021-08-27 15:21:47,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:21:47,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:21:47,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:21:47,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:21:47,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:21:47,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42efe01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47, skipping insertion in model container [2021-08-27 15:21:47,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:21:47,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:21:47,811 WARN L228 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] [2021-08-27 15:21:47,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:21:47,824 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:21:47,832 WARN L228 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] [2021-08-27 15:21:47,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:21:47,845 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:21:47,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47 WrapperNode [2021-08-27 15:21:47,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:21:47,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:21:47,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:21:47,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:21:47,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:21:47,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:21:47,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:21:47,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:21:47,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:21:47,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:21:47,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:21:47,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:21:47,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:47,966 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) [2021-08-27 15:21:47,996 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 [2021-08-27 15:21:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:21:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:21:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:21:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:21:48,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:21:48,323 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-08-27 15:21:48,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:48 BoogieIcfgContainer [2021-08-27 15:21:48,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:21:48,325 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:21:48,326 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:21:48,328 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:21:48,328 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:21:48,328 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:21:47" (1/3) ... [2021-08-27 15:21:48,329 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d1fb4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:21:48, skipping insertion in model container [2021-08-27 15:21:48,329 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:21:48,329 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47" (2/3) ... [2021-08-27 15:21:48,330 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d1fb4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:21:48, skipping insertion in model container [2021-08-27 15:21:48,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:21:48,330 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:48" (3/3) ... [2021-08-27 15:21:48,331 INFO L389 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2021-08-27 15:21:48,365 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:21:48,365 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:21:48,365 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:21:48,365 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:21:48,366 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:21:48,366 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:21:48,366 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:21:48,366 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:21:48,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 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) [2021-08-27 15:21:48,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2021-08-27 15:21:48,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:21:48,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:21:48,400 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:21:48,401 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:21:48,401 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:21:48,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 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) [2021-08-27 15:21:48,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2021-08-27 15:21:48,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:21:48,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:21:48,407 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:21:48,407 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:21:48,412 INFO L791 eck$LassoCheckResult]: Stem: 51#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_#t~post11, main_#t~post12, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L31true assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 42#L34-2true [2021-08-27 15:21:48,412 INFO L793 eck$LassoCheckResult]: Loop: 42#L34-2true assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 18#L35-2true assume !true; 42#L34-2true [2021-08-27 15:21:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-08-27 15:21:48,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834921170] [2021-08-27 15:21:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,497 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,532 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:48,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1623, now seen corresponding path program 1 times [2021-08-27 15:21:48,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306552672] [2021-08-27 15:21:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:21:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:21:48,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:21:48,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306552672] [2021-08-27 15:21:48,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306552672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:21:48,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:21:48,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 15:21:48,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009156161] [2021-08-27 15:21:48,578 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:21:48,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:21:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 15:21:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 15:21:48,591 INFO L87 Difference]: Start difference. First operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 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, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-08-27 15:21:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:21:48,599 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2021-08-27 15:21:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:21:48,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 63 transitions. [2021-08-27 15:21:48,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2021-08-27 15:21:48,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 39 states and 42 transitions. [2021-08-27 15:21:48,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-08-27 15:21:48,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-08-27 15:21:48,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 42 transitions. [2021-08-27 15:21:48,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:21:48,614 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-08-27 15:21:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 42 transitions. [2021-08-27 15:21:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-27 15:21:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 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) [2021-08-27 15:21:48,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-08-27 15:21:48,630 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-08-27 15:21:48,630 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-08-27 15:21:48,631 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:21:48,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 42 transitions. [2021-08-27 15:21:48,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2021-08-27 15:21:48,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:21:48,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:21:48,632 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:21:48,633 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 15:21:48,633 INFO L791 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 138#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post6, main_#t~post7, main_#t~post8, main_#t~post9, main_#t~post10, main_#t~post11, main_#t~post12, main_~len~0, main_~i~0, main_~j~0, main_~bufsize~0, main_~limit~0;havoc main_~len~0;havoc main_~i~0;havoc main_~j~0;havoc main_~bufsize~0;main_~bufsize~0 := main_#t~nondet3;havoc main_#t~nondet3; 136#L31 assume !(main_~bufsize~0 < 0);main_~len~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~limit~0 := main_~bufsize~0 - 4;main_~i~0 := 0; 137#L34-2 [2021-08-27 15:21:48,633 INFO L793 eck$LassoCheckResult]: Loop: 137#L34-2 assume !!(main_~i~0 < main_~len~0);main_~j~0 := 0; 129#L35-2 assume !(main_~i~0 < main_~len~0 && main_~j~0 < main_~limit~0); 137#L34-2 [2021-08-27 15:21:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,634 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 2 times [2021-08-27 15:21:48,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199115804] [2021-08-27 15:21:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,652 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,667 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1447, now seen corresponding path program 1 times [2021-08-27 15:21:48,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967497333] [2021-08-27 15:21:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,670 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,673 INFO L82 PathProgramCache]: Analyzing trace with hash 28695946, now seen corresponding path program 1 times [2021-08-27 15:21:48,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644991363] [2021-08-27 15:21:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,700 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:49,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:21:49 BoogieIcfgContainer [2021-08-27 15:21:49,017 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:21:49,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:21:49,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:21:49,018 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:21:49,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:48" (3/4) ... [2021-08-27 15:21:49,020 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:21:49,048 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:21:49,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:21:49,049 INFO L168 Benchmark]: Toolchain (without parser) took 1333.58 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 43.8 MB in the beginning and 55.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,050 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 62.9 MB. Free memory is still 45.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:21:49,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.38 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 33.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.15 ms. Allocated memory is still 62.9 MB. Free memory was 33.6 MB in the beginning and 46.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,051 INFO L168 Benchmark]: Boogie Preprocessor took 36.63 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:21:49,052 INFO L168 Benchmark]: RCFGBuilder took 383.01 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 63.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,052 INFO L168 Benchmark]: BuchiAutomizer took 691.27 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 57.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,052 INFO L168 Benchmark]: Witness Printer took 31.02 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 55.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 62.9 MB. Free memory is still 45.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 130.38 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 33.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.15 ms. Allocated memory is still 62.9 MB. Free memory was 33.6 MB in the beginning and 46.8 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.63 ms. Allocated memory is still 62.9 MB. Free memory was 46.8 MB in the beginning and 45.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 383.01 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 63.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 691.27 ms. Allocated memory is still 83.9 MB. Free memory was 63.5 MB in the beginning and 57.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. * Witness Printer took 31.02 ms. Allocated memory is still 83.9 MB. Free memory was 57.2 MB in the beginning and 55.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 39 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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 8.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 63 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time 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: 34]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=2655} State at position 1 is {NULL=0, bufsize=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@56631bdb=0, NULL=2656, \result=0, NULL=2655, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@15daf977=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6aeabeaf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@33388cd=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3908294a=0, NULL=2657, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73f91f04=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70b690b9=0, len=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6ae03243=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3b4c6087=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@724c6454=0, NULL=0, limit=-4} - 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! [2021-08-27 15:21:49,093 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...