./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 35987657 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/termination-15/cstrlen_reverse_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 168748c0c54c019ef253d55ab380d3a197e2401ba990ef8210cb41b73a41cb13 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 01:43:12,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:43:12,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:43:12,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:43:12,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:43:12,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:43:12,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:43:12,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:43:12,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:43:12,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:43:12,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:43:12,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:43:12,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:43:12,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:43:12,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:43:12,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:43:12,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:43:12,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:43:12,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:43:12,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:43:12,615 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:43:12,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:43:12,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:43:12,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:43:12,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:43:12,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:43:12,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:43:12,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:43:12,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:43:12,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:43:12,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:43:12,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:43:12,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:43:12,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:43:12,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:43:12,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:43:12,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:43:12,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:43:12,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:43:12,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:43:12,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:43:12,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:43:12,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:43:12,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:43:12,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:43:12,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:43:12,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:43:12,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:43:12,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:43:12,671 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:43:12,671 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:43:12,671 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:43:12,672 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:43:12,672 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:43:12,672 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:43:12,673 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:43:12,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:43:12,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:43:12,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:43:12,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:43:12,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:43:12,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:43:12,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:43:12,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:43:12,674 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:43:12,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:43:12,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:43:12,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:43:12,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:43:12,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:43:12,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:43:12,677 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:43:12,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 168748c0c54c019ef253d55ab380d3a197e2401ba990ef8210cb41b73a41cb13 [2022-07-22 01:43:13,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:43:13,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:43:13,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:43:13,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:43:13,056 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:43:13,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2022-07-22 01:43:13,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68c15b1d/71e68bee2407473fa20427fe7327c6e4/FLAGf5756b995 [2022-07-22 01:43:13,517 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:43:13,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2022-07-22 01:43:13,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68c15b1d/71e68bee2407473fa20427fe7327c6e4/FLAGf5756b995 [2022-07-22 01:43:13,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b68c15b1d/71e68bee2407473fa20427fe7327c6e4 [2022-07-22 01:43:13,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:43:13,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:43:13,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:43:13,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:43:13,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:43:13,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491eef52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13, skipping insertion in model container [2022-07-22 01:43:13,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:43:13,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:43:13,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:43:13,817 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:43:13,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:43:13,878 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:43:13,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13 WrapperNode [2022-07-22 01:43:13,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:43:13,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:43:13,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:43:13,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:43:13,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,918 INFO L137 Inliner]: procedures = 152, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-07-22 01:43:13,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:43:13,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:43:13,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:43:13,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:43:13,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:43:13,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:43:13,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:43:13,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:43:13,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (1/1) ... [2022-07-22 01:43:13,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:13,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:13,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:14,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-22 01:43:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 01:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:43:14,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:43:14,091 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:43:14,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:43:14,162 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:43:14,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:43:14,166 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:43:14,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:43:14 BoogieIcfgContainer [2022-07-22 01:43:14,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:43:14,168 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:43:14,168 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:43:14,170 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:43:14,170 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:43:14,170 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:43:13" (1/3) ... [2022-07-22 01:43:14,171 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e68871e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:43:14, skipping insertion in model container [2022-07-22 01:43:14,171 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:43:14,171 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:43:13" (2/3) ... [2022-07-22 01:43:14,172 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e68871e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:43:14, skipping insertion in model container [2022-07-22 01:43:14,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:43:14,172 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:43:14" (3/3) ... [2022-07-22 01:43:14,172 INFO L354 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2022-07-22 01:43:14,203 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:43:14,203 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:43:14,203 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:43:14,203 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:43:14,203 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:43:14,204 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:43:14,204 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:43:14,204 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:43:14,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:43:14,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:43:14,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:43:14,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:43:14,220 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-22 01:43:14,220 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:43:14,220 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:43:14,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:43:14,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:43:14,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:43:14,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:43:14,222 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-22 01:43:14,222 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:43:14,226 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet207#1, main_#t~malloc208#1.base, main_#t~malloc208#1.offset, main_#t~ret209#1, main_~length1~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset;main_~length1~0#1 := main_#t~nondet207#1;havoc main_#t~nondet207#1; 11#L373true assume !(main_~length1~0#1 < 1); 9#L373-2true call main_#t~malloc208#1.base, main_#t~malloc208#1.offset := #Ultimate.allocOnStack(main_~length1~0#1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_#t~malloc208#1.base, main_#t~malloc208#1.offset;call write~int(0, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, 1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset + (main_~length1~0#1 - 1);assume { :begin_inline_cstrlen } true;cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset;havoc cstrlen_#res#1;havoc cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset, cstrlen_#t~mem205#1, cstrlen_~s#1.base, cstrlen_~s#1.offset, cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~s#1.base, cstrlen_~s#1.offset := cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_~s#1.base, cstrlen_~s#1.offset; 2#L367-3true [2022-07-22 01:43:14,226 INFO L754 eck$LassoCheckResult]: Loop: 2#L367-3true call cstrlen_#t~mem205#1 := read~int(cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset, 1); 10#L367-1true assume !!(0 != cstrlen_#t~mem205#1);havoc cstrlen_#t~mem205#1;cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset := cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset - 1;havoc cstrlen_#t~post206#1.base, cstrlen_#t~post206#1.offset; 2#L367-3true [2022-07-22 01:43:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:43:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-07-22 01:43:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:43:14,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271883860] [2022-07-22 01:43:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:43:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:43:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:43:14,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:43:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:43:14,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:43:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:43:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2022-07-22 01:43:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:43:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689526675] [2022-07-22 01:43:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:43:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:43:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:43:14,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:43:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:43:14,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:43:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:43:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2022-07-22 01:43:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:43:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985962339] [2022-07-22 01:43:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:43:14,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:43:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:43:14,462 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:43:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:43:14,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:43:14,837 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:43:14,838 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:43:14,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:43:14,838 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:43:14,839 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:43:14,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:14,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:43:14,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:43:14,839 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2022-07-22 01:43:14,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:43:14,840 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:43:14,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:43:15,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:43:15,233 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:43:15,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:15,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:15,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-22 01:43:15,296 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:43:15,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:43:15,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:43:15,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:43:15,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:43:15,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:43:15,308 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:43:15,325 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:43:15,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-22 01:43:15,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:15,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:15,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:15,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-22 01:43:15,358 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:43:15,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:43:15,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:43:15,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:43:15,366 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-07-22 01:43:15,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:43:15,367 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-07-22 01:43:15,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:43:15,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:43:15,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-22 01:43:15,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:15,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:15,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:15,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-22 01:43:15,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:43:15,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:43:15,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:43:15,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:43:15,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:43:15,433 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:43:15,433 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:43:15,461 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:43:15,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-22 01:43:15,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:15,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:15,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-22 01:43:15,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:43:15,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:43:15,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:43:15,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:43:15,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:43:15,508 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:43:15,508 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:43:15,527 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:43:15,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-22 01:43:15,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:15,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:15,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-22 01:43:15,551 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-22 01:43:15,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:43:15,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:43:15,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:43:15,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:43:15,565 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:43:15,565 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:43:15,581 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:43:15,606 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2022-07-22 01:43:15,606 INFO L444 ModelExtractionUtils]: 18 out of 28 variables were initially zero. Simplification set additionally 7 variables to zero. [2022-07-22 01:43:15,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:43:15,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:43:15,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:43:15,662 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:43:15,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-22 01:43:15,684 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-07-22 01:43:15,684 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:43:15,685 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc208#1.base)_1, ULTIMATE.start_cstrlen_~p~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc208#1.base)_1 + 2*ULTIMATE.start_cstrlen_~p~0#1.offset Supporting invariants [] [2022-07-22 01:43:15,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-22 01:43:15,715 INFO L293 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2022-07-22 01:43:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:43:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:43:15,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 01:43:15,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:43:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:43:15,795 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 01:43:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:43:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:43:15,841 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:43:15,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:43:15,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Result 20 states and 23 transitions. Complement of second has 6 states. [2022-07-22 01:43:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-22 01:43:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:43:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-07-22 01:43:15,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-22 01:43:15,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:43:15,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-22 01:43:15,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:43:15,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 4 letters. [2022-07-22 01:43:15,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:43:15,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2022-07-22 01:43:15,884 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:43:15,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2022-07-22 01:43:15,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 01:43:15,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 01:43:15,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 01:43:15,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 01:43:15,886 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:43:15,887 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:43:15,887 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:43:15,887 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:43:15,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 01:43:15,887 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:43:15,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 01:43:15,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:43:15 BoogieIcfgContainer [2022-07-22 01:43:15,891 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:43:15,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:43:15,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:43:15,892 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:43:15,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:43:14" (3/4) ... [2022-07-22 01:43:15,894 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 01:43:15,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:43:15,894 INFO L158 Benchmark]: Toolchain (without parser) took 2355.39ms. Allocated memory was 50.3MB in the beginning and 75.5MB in the end (delta: 25.2MB). Free memory was 24.8MB in the beginning and 33.8MB in the end (delta: -9.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-07-22 01:43:15,895 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:43:15,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.86ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.6MB in the beginning and 37.1MB in the end (delta: -12.5MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-07-22 01:43:15,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.25ms. Allocated memory is still 60.8MB. Free memory was 36.9MB in the beginning and 35.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:43:15,896 INFO L158 Benchmark]: Boogie Preprocessor took 30.62ms. Allocated memory is still 60.8MB. Free memory was 35.1MB in the beginning and 33.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:43:15,896 INFO L158 Benchmark]: RCFGBuilder took 217.02ms. Allocated memory is still 60.8MB. Free memory was 33.9MB in the beginning and 38.0MB in the end (delta: -4.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-07-22 01:43:15,897 INFO L158 Benchmark]: BuchiAutomizer took 1723.54ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 37.8MB in the beginning and 34.3MB in the end (delta: 3.5MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-07-22 01:43:15,897 INFO L158 Benchmark]: Witness Printer took 2.32ms. Allocated memory is still 75.5MB. Free memory was 34.3MB in the beginning and 33.8MB in the end (delta: 462.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:43:15,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.86ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.6MB in the beginning and 37.1MB in the end (delta: -12.5MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.25ms. Allocated memory is still 60.8MB. Free memory was 36.9MB in the beginning and 35.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.62ms. Allocated memory is still 60.8MB. Free memory was 35.1MB in the beginning and 33.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 217.02ms. Allocated memory is still 60.8MB. Free memory was 33.9MB in the beginning and 38.0MB in the end (delta: -4.1MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1723.54ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 37.8MB in the beginning and 34.3MB in the end (delta: 3.5MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * Witness Printer took 2.32ms. Allocated memory is still 75.5MB. Free memory was 34.3MB in the beginning and 33.8MB in the end (delta: 462.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length1 * sizeof(char))] + 2 * p and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 6 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital118 mio100 ax100 hnf100 lsp94 ukn92 mio100 lsp47 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 91ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-22 01:43:15,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-22 01:43:16,136 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 Result: TRUE