./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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/recursive-simple/afterrec_2calls-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:42:32,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:42:32,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:42:32,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:42:32,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:42:32,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:42:32,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:42:32,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:42:32,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:42:32,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:42:32,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:42:32,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:42:32,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:42:32,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:42:32,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:42:32,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:42:32,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:42:32,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:42:32,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:42:32,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:42:32,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:42:32,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:42:32,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:42:32,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:42:32,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:42:32,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:42:32,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:42:32,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:42:32,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:42:32,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:42:32,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:42:32,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:42:32,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:42:32,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:42:32,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:42:32,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:42:32,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:42:32,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:42:32,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:42:32,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:42:32,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:42:32,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:42:32,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:42:32,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:42:32,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:42:32,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:42:32,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:42:32,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:42:32,658 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:42:32,658 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:42:32,658 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:42:32,658 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:42:32,659 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:42:32,659 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:42:32,659 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:42:32,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:42:32,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:42:32,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:42:32,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:42:32,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:42:32,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:42:32,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:42:32,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:42:32,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:42:32,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:42:32,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:42:32,661 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:42:32,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:42:32,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:42:32,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:42:32,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:42:32,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:42:32,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:42:32,663 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:42:32,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cf5a35873afe0e5012214bd680ff6c9f10002775e1599934b6c286bf71e0e3d [2021-12-28 09:42:32,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:42:32,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:42:32,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:42:32,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:42:32,924 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:42:32,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2021-12-28 09:42:32,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6893953/9412bd22685a470694864db48aece610/FLAG451537e1e [2021-12-28 09:42:33,245 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:42:33,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2021-12-28 09:42:33,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6893953/9412bd22685a470694864db48aece610/FLAG451537e1e [2021-12-28 09:42:33,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6893953/9412bd22685a470694864db48aece610 [2021-12-28 09:42:33,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:42:33,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:42:33,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:42:33,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:42:33,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:42:33,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfc75ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33, skipping insertion in model container [2021-12-28 09:42:33,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:42:33,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:42:33,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[354,367] [2021-12-28 09:42:33,808 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[442,455] [2021-12-28 09:42:33,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:42:33,814 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:42:33,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[354,367] [2021-12-28 09:42:33,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c[442,455] [2021-12-28 09:42:33,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:42:33,835 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:42:33,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33 WrapperNode [2021-12-28 09:42:33,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:42:33,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:42:33,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:42:33,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:42:33,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,855 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2021-12-28 09:42:33,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:42:33,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:42:33,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:42:33,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:42:33,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:42:33,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:42:33,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:42:33,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:42:33,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (1/1) ... [2021-12-28 09:42:33,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:33,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:42:33,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:42:33,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:42:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:42:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-28 09:42:33,963 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-28 09:42:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:42:33,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:42:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:42:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2021-12-28 09:42:33,964 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2021-12-28 09:42:34,014 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:42:34,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:42:34,113 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:42:34,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:42:34,118 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 09:42:34,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:42:34 BoogieIcfgContainer [2021-12-28 09:42:34,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:42:34,120 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:42:34,120 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:42:34,122 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:42:34,122 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:42:34,123 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:42:33" (1/3) ... [2021-12-28 09:42:34,123 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71c1df39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:42:34, skipping insertion in model container [2021-12-28 09:42:34,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:42:34,125 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:42:33" (2/3) ... [2021-12-28 09:42:34,125 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71c1df39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:42:34, skipping insertion in model container [2021-12-28 09:42:34,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:42:34,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:42:34" (3/3) ... [2021-12-28 09:42:34,126 INFO L388 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-1.c [2021-12-28 09:42:34,161 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:42:34,161 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:42:34,161 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:42:34,161 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:42:34,162 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:42:34,162 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:42:34,162 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:42:34,162 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:42:34,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 09:42:34,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:42:34,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:42:34,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:42:34,199 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:42:34,199 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:42:34,199 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:42:34,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 09:42:34,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:42:34,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:42:34,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:42:34,203 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:42:34,203 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:42:34,208 INFO L791 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 16#L23true call f(4);< 13#fENTRYtrue [2021-12-28 09:42:34,209 INFO L793 eck$LassoCheckResult]: Loop: 13#fENTRYtrue ~n := #in~n; 6#L9true assume !(~n < 3);#t~post6 := ~n;~n := #t~post6 - 1;havoc #t~post6; 9#L11true call f2(~n);< 7#f2ENTRYtrue ~n := #in~n; 15#L16true assume !(~n < 3);#t~post7 := ~n;~n := #t~post7 - 1;havoc #t~post7; 17#L18true call f(~n);< 13#fENTRYtrue [2021-12-28 09:42:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:42:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash 38808, now seen corresponding path program 1 times [2021-12-28 09:42:34,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:42:34,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178730705] [2021-12-28 09:42:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:42:34,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:42:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:42:34,283 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:42:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:42:34,311 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:42:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:42:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 891958565, now seen corresponding path program 1 times [2021-12-28 09:42:34,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:42:34,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785122317] [2021-12-28 09:42:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:42:34,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:42:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:42:34,330 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:42:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:42:34,356 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:42:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:42:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 904560508, now seen corresponding path program 1 times [2021-12-28 09:42:34,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:42:34,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177774315] [2021-12-28 09:42:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:42:34,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:42:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:42:34,379 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:42:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:42:34,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:42:34,559 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:42:34,560 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:42:34,560 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:42:34,560 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:42:34,560 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:42:34,560 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:34,560 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:42:34,560 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:42:34,561 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2021-12-28 09:42:34,561 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:42:34,561 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:42:34,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,643 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:42:34,643 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:42:34,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:34,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:42:34,647 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) [2021-12-28 09:42:34,651 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 [2021-12-28 09:42:34,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:42:34,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:42:34,686 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 [2021-12-28 09:42:34,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:34,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:42:34,688 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) [2021-12-28 09:42:34,691 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 [2021-12-28 09:42:34,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:42:34,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:42:34,776 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:42:34,781 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 [2021-12-28 09:42:34,781 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:42:34,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:42:34,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:42:34,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:42:34,781 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:42:34,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:34,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:42:34,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:42:34,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2021-12-28 09:42:34,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:42:34,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:42:34,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:42:34,839 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:42:34,842 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:42:34,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:34,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:42:34,844 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) [2021-12-28 09:42:34,849 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 [2021-12-28 09:42:34,877 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 [2021-12-28 09:42:34,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:42:34,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:42:34,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:42:34,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:42:34,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:42:34,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:42:34,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:42:34,898 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:42:34,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:42:34,906 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:42:34,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:42:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:42:34,908 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) [2021-12-28 09:42:34,909 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 [2021-12-28 09:42:34,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:42:34,910 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:42:34,910 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:42:34,910 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2021-12-28 09:42:34,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-28 09:42:34,929 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:42:34,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:42:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:42:34,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:42:34,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:42:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:42:34,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 09:42:34,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:42:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:42:35,058 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-12-28 09:42:35,059 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:42:35,182 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 62 transitions. Complement of second has 26 states. [2021-12-28 09:42:35,185 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 [2021-12-28 09:42:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-12-28 09:42:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:42:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 24 transitions. [2021-12-28 09:42:35,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-28 09:42:35,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:42:35,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 9 letters. Loop has 6 letters. [2021-12-28 09:42:35,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:42:35,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 24 transitions. Stem has 3 letters. Loop has 12 letters. [2021-12-28 09:42:35,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:42:35,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 62 transitions. [2021-12-28 09:42:35,195 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:42:35,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 0 states and 0 transitions. [2021-12-28 09:42:35,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-28 09:42:35,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-28 09:42:35,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-28 09:42:35,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:42:35,197 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:42:35,197 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:42:35,197 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:42:35,198 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:42:35,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-28 09:42:35,199 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:42:35,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-28 09:42:35,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:42:35 BoogieIcfgContainer [2021-12-28 09:42:35,204 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:42:35,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:42:35,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:42:35,205 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:42:35,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:42:34" (3/4) ... [2021-12-28 09:42:35,208 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 09:42:35,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:42:35,209 INFO L158 Benchmark]: Toolchain (without parser) took 1517.05ms. Allocated memory was 50.3MB in the beginning and 73.4MB in the end (delta: 23.1MB). Free memory was 28.2MB in the beginning and 51.9MB in the end (delta: -23.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:42:35,210 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 50.3MB. Free memory was 33.2MB in the beginning and 33.1MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:42:35,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 133.14ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 44.6MB in the end (delta: -16.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 09:42:35,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.64ms. Allocated memory is still 60.8MB. Free memory was 44.6MB in the beginning and 43.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:42:35,214 INFO L158 Benchmark]: Boogie Preprocessor took 14.07ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 42.3MB in the end (delta: 705.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:42:35,215 INFO L158 Benchmark]: RCFGBuilder took 248.10ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 37.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-12-28 09:42:35,216 INFO L158 Benchmark]: BuchiAutomizer took 1084.15ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.4MB in the beginning and 52.3MB in the end (delta: -14.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:42:35,216 INFO L158 Benchmark]: Witness Printer took 3.56ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 51.9MB in the end (delta: 436.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:42:35,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 50.3MB. Free memory was 33.2MB in the beginning and 33.1MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 133.14ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 44.6MB in the end (delta: -16.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.64ms. Allocated memory is still 60.8MB. Free memory was 44.6MB in the beginning and 43.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.07ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 42.3MB in the end (delta: 705.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.10ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 37.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1084.15ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.4MB in the beginning and 52.3MB in the end (delta: -14.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.56ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 51.9MB in the end (delta: 436.6kB). 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 \old(n) and consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 7 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg94 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 67ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-28 09:42:35,253 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