./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig3.c -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 c64ddc091da8ed0532dcccc83eb64a4ecc9abe88fb93c047052ca7ac9ea29989 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:47:54,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:47:54,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:47:54,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:47:54,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:47:54,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:47:54,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:47:54,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:47:54,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:47:54,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:47:54,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:47:54,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:47:54,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:47:54,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:47:54,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:47:54,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:47:54,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:47:54,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:47:54,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:47:54,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:47:54,672 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:47:54,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:47:54,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:47:54,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:47:54,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:47:54,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:47:54,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:47:54,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:47:54,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:47:54,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:47:54,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:47:54,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:47:54,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:47:54,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:47:54,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:47:54,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:47:54,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:47:54,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:47:54,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:47:54,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:47:54,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:47:54,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:47:54,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 14:47:54,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:47:54,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:47:54,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:47:54,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:47:54,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:47:54,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:47:54,712 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:47:54,712 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 14:47:54,712 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 14:47:54,713 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 14:47:54,713 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 14:47:54,713 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 14:47:54,713 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 14:47:54,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:47:54,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:47:54,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:47:54,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:47:54,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 14:47:54,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 14:47:54,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 14:47:54,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:47:54,715 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 14:47:54,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:47:54,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 14:47:54,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:47:54,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:47:54,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:47:54,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:47:54,716 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 14:47:54,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c64ddc091da8ed0532dcccc83eb64a4ecc9abe88fb93c047052ca7ac9ea29989 [2022-07-14 14:47:54,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:47:54,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:47:54,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:47:54,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:47:54,915 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:47:54,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig3.c [2022-07-14 14:47:54,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ce949c8/2fa83c73394c41a0b39c7088620c1402/FLAGc21138b6d [2022-07-14 14:47:55,292 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:47:55,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig3.c [2022-07-14 14:47:55,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ce949c8/2fa83c73394c41a0b39c7088620c1402/FLAGc21138b6d [2022-07-14 14:47:55,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ce949c8/2fa83c73394c41a0b39c7088620c1402 [2022-07-14 14:47:55,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:47:55,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:47:55,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:47:55,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:47:55,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:47:55,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15caca0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55, skipping insertion in model container [2022-07-14 14:47:55,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:47:55,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:47:55,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:47:55,841 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:47:55,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:47:55,856 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:47:55,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55 WrapperNode [2022-07-14 14:47:55,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:47:55,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:47:55,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:47:55,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:47:55,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,873 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 22 [2022-07-14 14:47:55,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:47:55,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:47:55,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:47:55,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:47:55,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:47:55,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:47:55,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:47:55,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:47:55,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (1/1) ... [2022-07-14 14:47:55,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:55,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:55,933 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) [2022-07-14 14:47:55,936 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 [2022-07-14 14:47:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:47:55,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:47:56,007 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:47:56,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:47:56,061 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:47:56,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:47:56,066 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 14:47:56,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:56 BoogieIcfgContainer [2022-07-14 14:47:56,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:47:56,068 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 14:47:56,068 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 14:47:56,070 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 14:47:56,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:56,070 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 02:47:55" (1/3) ... [2022-07-14 14:47:56,071 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a97746a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:47:56, skipping insertion in model container [2022-07-14 14:47:56,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:56,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:55" (2/3) ... [2022-07-14 14:47:56,072 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a97746a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:47:56, skipping insertion in model container [2022-07-14 14:47:56,072 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:56,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:56" (3/3) ... [2022-07-14 14:47:56,073 INFO L354 chiAutomizerObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig3.c [2022-07-14 14:47:56,109 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 14:47:56,109 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 14:47:56,109 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 14:47:56,109 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 14:47:56,110 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 14:47:56,110 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 14:47:56,110 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 14:47:56,110 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 14:47:56,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2022-07-14 14:47:56,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 14:47:56,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:56,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:56,126 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:47:56,126 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 14:47:56,127 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 14:47:56,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2022-07-14 14:47:56,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 14:47:56,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:56,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:56,128 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:47:56,128 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 14:47:56,132 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;~x~0 := 0; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1;~x~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L23-2true [2022-07-14 14:47:56,132 INFO L754 eck$LassoCheckResult]: Loop: 4#L23-2true assume !!(~x~0 > 0); 5#L23true assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;assume { :begin_inline_foo } true;havoc foo_#t~post0#1;foo_#t~post0#1 := ~x~0;~x~0 := foo_#t~post0#1 - 1;havoc foo_#t~post0#1; 9#L14true assume { :end_inline_foo } true; 4#L23-2true [2022-07-14 14:47:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-14 14:47:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:56,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198965114] [2022-07-14 14:47:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:56,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:56,192 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:56,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:56,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash 40812, now seen corresponding path program 1 times [2022-07-14 14:47:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:56,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122674477] [2022-07-14 14:47:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:56,238 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:56,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2022-07-14 14:47:56,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:56,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397113006] [2022-07-14 14:47:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:56,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:56,258 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:56,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:56,342 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:56,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:56,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:56,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:56,342 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:47:56,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:56,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:56,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: HarrisLalNoriRajamani-SAS2010-Fig3.c_Iteration1_Loop [2022-07-14 14:47:56,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:56,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:56,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:56,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:56,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:56,437 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:56,438 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:47:56,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:56,463 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) [2022-07-14 14:47:56,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:56,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:56,508 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 [2022-07-14 14:47:56,525 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:47:56,526 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_foo_#t~post0#1=0} Honda state: {ULTIMATE.start_foo_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:47:56,560 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 [2022-07-14 14:47:56,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:56,563 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) [2022-07-14 14:47:56,564 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 [2022-07-14 14:47:56,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:56,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:56,599 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 [2022-07-14 14:47:56,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:56,600 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) [2022-07-14 14:47:56,601 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 [2022-07-14 14:47:56,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:47:56,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:56,629 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:47:56,648 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 [2022-07-14 14:47:56,648 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:56,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:56,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:56,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:56,648 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:47:56,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:56,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:56,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: HarrisLalNoriRajamani-SAS2010-Fig3.c_Iteration1_Loop [2022-07-14 14:47:56,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:56,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:56,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:56,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:56,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:56,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:56,692 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:47:56,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:56,708 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) [2022-07-14 14:47:56,709 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 [2022-07-14 14:47:56,723 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 [2022-07-14 14:47:56,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:56,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:47:56,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:56,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:56,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:56,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:47:56,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:47:56,743 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:47:56,758 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 [2022-07-14 14:47:56,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:56,759 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) [2022-07-14 14:47:56,766 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 [2022-07-14 14:47:56,767 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 [2022-07-14 14:47:56,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:56,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:47:56,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:56,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:56,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:56,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:47:56,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:47:56,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:47:56,794 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:47:56,794 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:47:56,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:56,797 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) [2022-07-14 14:47:56,841 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 [2022-07-14 14:47:56,842 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:47:56,842 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:47:56,842 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:47:56,842 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(~x~0) = 1*~x~0 Supporting invariants [] [2022-07-14 14:47:56,858 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 [2022-07-14 14:47:56,860 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:47:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:56,891 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:56,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:56,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-14 14:47:56,952 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:56,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 28 transitions. Complement of second has 7 states. [2022-07-14 14:47:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 14:47:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-07-14 14:47:56,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-14 14:47:56,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:56,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-14 14:47:56,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:56,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-14 14:47:56,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:56,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2022-07-14 14:47:56,996 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 14:47:56,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2022-07-14 14:47:56,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 14:47:56,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 14:47:56,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 14:47:56,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 14:47:56,999 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:57,000 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:57,000 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:57,000 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 14:47:57,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 14:47:57,000 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 14:47:57,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 14:47:57,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 02:47:57 BoogieIcfgContainer [2022-07-14 14:47:57,006 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 14:47:57,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:47:57,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:47:57,007 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:47:57,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:56" (3/4) ... [2022-07-14 14:47:57,010 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 14:47:57,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:47:57,010 INFO L158 Benchmark]: Toolchain (without parser) took 1289.64ms. Allocated memory is still 117.4MB. Free memory was 88.5MB in the beginning and 83.8MB in the end (delta: 4.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-07-14 14:47:57,011 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 39.2MB in the beginning and 39.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:57,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.23ms. Allocated memory is still 117.4MB. Free memory was 88.3MB in the beginning and 95.7MB in the end (delta: -7.4MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-07-14 14:47:57,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.33ms. Allocated memory is still 117.4MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:47:57,017 INFO L158 Benchmark]: Boogie Preprocessor took 9.09ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 93.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:47:57,017 INFO L158 Benchmark]: RCFGBuilder took 183.87ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 85.5MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 14:47:57,018 INFO L158 Benchmark]: BuchiAutomizer took 938.04ms. Allocated memory is still 117.4MB. Free memory was 85.2MB in the beginning and 84.4MB in the end (delta: 825.5kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-07-14 14:47:57,018 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 117.4MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:57,023 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 83.9MB. Free memory was 39.2MB in the beginning and 39.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 135.23ms. Allocated memory is still 117.4MB. Free memory was 88.3MB in the beginning and 95.7MB in the end (delta: -7.4MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.33ms. Allocated memory is still 117.4MB. Free memory was 95.7MB in the beginning and 94.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 9.09ms. Allocated memory is still 117.4MB. Free memory was 94.3MB in the beginning and 93.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 183.87ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 85.5MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 938.04ms. Allocated memory is still 117.4MB. Free memory was 85.2MB in the beginning and 84.4MB in the end (delta: 825.5kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 117.4MB. Free memory is still 83.8MB. 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 x and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-14 14:47:57,045 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 [2022-07-14 14:47:57,260 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