./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/TerminatorRec02.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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-numeric/TerminatorRec02.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 744c3d26555bbd53a7a0d9e7c64efe010ba06d0f67ec9ca21eb74ed1148222d3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:25:40,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:25:40,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:25:40,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:25:40,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:25:40,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:25:40,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:25:40,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:25:40,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:25:40,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:25:40,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:25:40,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:25:40,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:25:40,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:25:40,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:25:40,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:25:40,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:25:40,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:25:40,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:25:40,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:25:40,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:25:40,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:25:40,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:25:40,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:25:40,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:25:40,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:25:40,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:25:40,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:25:40,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:25:40,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:25:40,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:25:40,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:25:40,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:25:40,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:25:40,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:25:40,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:25:40,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:25:40,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:25:40,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:25:40,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:25:40,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:25:40,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-02-21 03:25:40,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:25:40,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:25:40,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:25:40,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:25:40,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:25:40,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:25:40,630 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:25:40,630 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:25:40,630 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:25:40,631 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:25:40,631 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:25:40,632 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:25:40,632 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:25:40,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:25:40,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:25:40,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:25:40,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:25:40,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:25:40,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:25:40,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:25:40,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:25:40,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:25:40,635 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:25:40,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 744c3d26555bbd53a7a0d9e7c64efe010ba06d0f67ec9ca21eb74ed1148222d3 [2022-02-21 03:25:40,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:25:40,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:25:40,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:25:40,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:25:40,925 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:25:40,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2022-02-21 03:25:40,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b5b3dfd/5b9cef00510d4b448c046de1fb879504/FLAG302563761 [2022-02-21 03:25:41,334 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:25:41,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/TerminatorRec02.c [2022-02-21 03:25:41,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b5b3dfd/5b9cef00510d4b448c046de1fb879504/FLAG302563761 [2022-02-21 03:25:41,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b5b3dfd/5b9cef00510d4b448c046de1fb879504 [2022-02-21 03:25:41,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:25:41,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:25:41,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:25:41,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:25:41,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:25:41,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:25:41" (1/1) ... [2022-02-21 03:25:41,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36763b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:41, skipping insertion in model container [2022-02-21 03:25:41,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:25:41" (1/1) ... [2022-02-21 03:25:41,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:25:41,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:25:42,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:25:42,046 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:25:42,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:25:42,077 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:25:42,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42 WrapperNode [2022-02-21 03:25:42,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:25:42,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:25:42,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:25:42,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:25:42,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,111 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-02-21 03:25:42,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:25:42,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:25:42,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:25:42,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:25:42,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:25:42,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:25:42,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:25:42,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:25:42,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (1/1) ... [2022-02-21 03:25:42,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:42,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:42,160 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) [2022-02-21 03:25:42,165 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 [2022-02-21 03:25:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-02-21 03:25:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-02-21 03:25:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:25:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:25:42,228 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:25:42,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:25:42,296 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:25:42,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:25:42,300 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-21 03:25:42,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:25:42 BoogieIcfgContainer [2022-02-21 03:25:42,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:25:42,302 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:25:42,302 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:25:42,304 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:25:42,305 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:25:42,305 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:25:41" (1/3) ... [2022-02-21 03:25:42,306 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1788fc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:25:42, skipping insertion in model container [2022-02-21 03:25:42,306 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:25:42,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:25:42" (2/3) ... [2022-02-21 03:25:42,306 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1788fc79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:25:42, skipping insertion in model container [2022-02-21 03:25:42,306 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:25:42,307 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:25:42" (3/3) ... [2022-02-21 03:25:42,307 INFO L388 chiAutomizerObserver]: Analyzing ICFG TerminatorRec02.c [2022-02-21 03:25:42,333 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:25:42,333 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:25:42,333 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:25:42,333 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:25:42,333 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:25:42,333 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:25:42,333 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:25:42,333 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:25:42,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-21 03:25:42,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-02-21 03:25:42,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:25:42,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:25:42,364 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-02-21 03:25:42,364 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-02-21 03:25:42,364 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:25:42,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-21 03:25:42,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-02-21 03:25:42,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:25:42,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:25:42,368 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-02-21 03:25:42,368 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-02-21 03:25:42,372 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 15#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~x~0#1, main_~y~1#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 8#L27true assume !(main_~x~0#1 < 0);main_~y~1#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 6#L30true assume !(main_~y~1#1 < 0);main_~z~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 13#L33true call main_#t~ret4#1 := fact(main_~x~0#1);< 9#factENTRYtrue [2022-02-21 03:25:42,372 INFO L793 eck$LassoCheckResult]: Loop: 9#factENTRYtrue ~x := #in~x; 16#L18true assume ~x > 1; 10#L19true call #t~ret0 := fact(~x - 1);< 9#factENTRYtrue [2022-02-21 03:25:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 1 times [2022-02-21 03:25:42,381 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:25:42,381 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593738994] [2022-02-21 03:25:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:25:42,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:25:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:42,435 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:25:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:42,447 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:25:42,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 29910, now seen corresponding path program 1 times [2022-02-21 03:25:42,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:25:42,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882482439] [2022-02-21 03:25:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:25:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:25:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:42,455 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:25:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:42,458 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:25:42,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash -16029501, now seen corresponding path program 1 times [2022-02-21 03:25:42,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:25:42,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380586408] [2022-02-21 03:25:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:25:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:25:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:42,468 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:25:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:25:42,475 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:25:42,610 INFO L210 LassoAnalysis]: Preferences: [2022-02-21 03:25:42,611 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-02-21 03:25:42,611 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-02-21 03:25:42,611 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-02-21 03:25:42,611 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-02-21 03:25:42,611 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:42,611 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-02-21 03:25:42,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-02-21 03:25:42,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2022-02-21 03:25:42,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-02-21 03:25:42,612 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-02-21 03:25:42,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:42,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:42,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:42,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:42,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:42,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-02-21 03:25:42,750 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-02-21 03:25:42,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:42,791 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) [2022-02-21 03:25:42,807 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 [2022-02-21 03:25:42,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-02-21 03:25:42,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:25:42,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-02-21 03:25:42,853 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~y~0=0} Honda state: {fact_~y~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-02-21 03:25:42,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-02-21 03:25:42,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:42,879 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) [2022-02-21 03:25:42,883 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 [2022-02-21 03:25:42,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-02-21 03:25:42,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:25:42,922 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 [2022-02-21 03:25:42,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:42,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:42,924 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) [2022-02-21 03:25:42,933 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 [2022-02-21 03:25:42,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-02-21 03:25:42,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-02-21 03:25:43,009 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-02-21 03:25:43,013 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 [2022-02-21 03:25:43,013 INFO L210 LassoAnalysis]: Preferences: [2022-02-21 03:25:43,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-02-21 03:25:43,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-02-21 03:25:43,014 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-02-21 03:25:43,014 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-02-21 03:25:43,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:43,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-02-21 03:25:43,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-02-21 03:25:43,014 INFO L133 ssoRankerPreferences]: Filename of dumped script: TerminatorRec02.c_Iteration1_Loop [2022-02-21 03:25:43,014 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-02-21 03:25:43,014 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-02-21 03:25:43,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:43,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:43,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:43,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:43,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-02-21 03:25:43,083 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-02-21 03:25:43,086 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-02-21 03:25:43,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:43,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:43,103 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) [2022-02-21 03:25:43,120 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 [2022-02-21 03:25:43,120 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 [2022-02-21 03:25:43,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:25:43,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-02-21 03:25:43,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:25:43,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:25:43,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-02-21 03:25:43,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-02-21 03:25:43,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-02-21 03:25:43,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:25:43,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-02-21 03:25:43,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:43,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:43,180 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) [2022-02-21 03:25:43,182 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 [2022-02-21 03:25:43,183 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 [2022-02-21 03:25:43,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:25:43,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-02-21 03:25:43,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:25:43,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:25:43,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-02-21 03:25:43,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-02-21 03:25:43,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-02-21 03:25:43,206 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-02-21 03:25:43,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-02-21 03:25:43,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:43,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:43,226 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) [2022-02-21 03:25:43,227 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 [2022-02-21 03:25:43,228 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 [2022-02-21 03:25:43,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-02-21 03:25:43,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-02-21 03:25:43,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-02-21 03:25:43,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-02-21 03:25:43,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-02-21 03:25:43,246 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-02-21 03:25:43,246 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-02-21 03:25:43,263 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-02-21 03:25:43,265 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-02-21 03:25:43,265 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-02-21 03:25:43,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:25:43,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:25:43,272 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2022-02-21 03:25:43,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-02-21 03:25:43,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-02-21 03:25:43,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-02-21 03:25:43,275 INFO L513 LassoAnalysis]: Proved termination. [2022-02-21 03:25:43,275 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~x) = 1*fact_#in~x Supporting invariants [] [2022-02-21 03:25:43,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-02-21 03:25:43,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-02-21 03:25:43,326 INFO L390 LassoCheck]: Loop: "~x := #in~x;" "assume ~x > 1;" "call #t~ret0 := fact(~x - 1);"< [2022-02-21 03:25:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:25:43,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:25:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:25:43,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-21 03:25:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:25:43,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-21 03:25:43,393 INFO L290 TraceCheckUtils]: 0: Hoare triple {25#unseeded} assume { :begin_inline_ULTIMATE.init } true; {25#unseeded} is VALID [2022-02-21 03:25:43,394 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#unseeded} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~x~0#1, main_~y~1#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; {25#unseeded} is VALID [2022-02-21 03:25:43,394 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#unseeded} assume !(main_~x~0#1 < 0);main_~y~1#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; {25#unseeded} is VALID [2022-02-21 03:25:43,395 INFO L290 TraceCheckUtils]: 3: Hoare triple {25#unseeded} assume !(main_~y~1#1 < 0);main_~z~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; {25#unseeded} is VALID [2022-02-21 03:25:43,395 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#unseeded} call main_#t~ret4#1 := fact(main_~x~0#1); {25#unseeded} is VALID [2022-02-21 03:25:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:25:43,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-21 03:25:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:25:43,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-21 03:25:43,469 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#(>= oldRank0 |fact_#in~x|)} ~x := #in~x; {55#(<= fact_~x oldRank0)} is VALID [2022-02-21 03:25:43,470 INFO L290 TraceCheckUtils]: 1: Hoare triple {55#(<= fact_~x oldRank0)} assume ~x > 1; {59#(and (<= fact_~x oldRank0) (< 1 fact_~x))} is VALID [2022-02-21 03:25:43,473 INFO L272 TraceCheckUtils]: 2: Hoare triple {59#(and (<= fact_~x oldRank0) (< 1 fact_~x))} call #t~ret0 := fact(~x - 1); {38#(or (and (>= oldRank0 0) (> oldRank0 |fact_#in~x|)) unseeded)} is VALID [2022-02-21 03:25:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:25:43,487 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:43,496 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:25:43,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,501 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 [2022-02-21 03:25:43,502 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:43,616 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 38 transitions. Complement of second has 12 states. [2022-02-21 03:25:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-02-21 03:25:43,617 INFO L123 tractBuchiDifference]: Start testing correctness of buchiDifferenceNCSBLazy3 [2022-02-21 03:25:43,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-21 03:25:43,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-02-21 03:25:43,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:25:43,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:25:43,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:43,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-02-21 03:25:43,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:25:43,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:25:43,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 38 transitions. [2022-02-21 03:25:43,625 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:25:43,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:25:43,626 INFO L70 LassoExtractor]: Start lassoExtractor. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-21 03:25:43,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-02-21 03:25:43,630 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 3 examples of accepted words. [2022-02-21 03:25:43,631 INFO L70 LassoExtractor]: Start lassoExtractor. Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:43,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-02-21 03:25:43,633 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 1 examples of accepted words. [2022-02-21 03:25:43,633 INFO L70 LassoExtractor]: Start lassoExtractor. Operand 33 states and 38 transitions. cyclomatic complexity: 6 [2022-02-21 03:25:43,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 38 transitions. cyclomatic complexity: 6 [2022-02-21 03:25:43,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:25:43,633 INFO L86 LassoExtractor]: Finished lassoExtractor. Found 0 examples of accepted words. [2022-02-21 03:25:43,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 1 letters. Loop has 3 letters. [2022-02-21 03:25:43,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 1 letters. Loop has 3 letters. [2022-02-21 03:25:43,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 1 letters. Loop has 3 letters. [2022-02-21 03:25:43,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 33 letters. Loop has 33 letters. [2022-02-21 03:25:43,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 33 letters. Loop has 33 letters. [2022-02-21 03:25:43,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 33 letters. Loop has 33 letters. [2022-02-21 03:25:43,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 15 letters. Loop has 15 letters. [2022-02-21 03:25:43,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 15 letters. Loop has 15 letters. [2022-02-21 03:25:43,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 15 letters. Loop has 15 letters. [2022-02-21 03:25:43,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 4 letters. Loop has 4 letters. [2022-02-21 03:25:43,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 4 letters. Loop has 4 letters. [2022-02-21 03:25:43,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 4 letters. Loop has 4 letters. [2022-02-21 03:25:43,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 6 letters. Loop has 3 letters. [2022-02-21 03:25:43,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 6 letters. Loop has 3 letters. [2022-02-21 03:25:43,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 6 letters. Loop has 3 letters. [2022-02-21 03:25:43,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 7 letters. Loop has 3 letters. [2022-02-21 03:25:43,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 7 letters. Loop has 3 letters. [2022-02-21 03:25:43,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 7 letters. Loop has 3 letters. [2022-02-21 03:25:43,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Stem has 1 letters. Loop has 3 letters. [2022-02-21 03:25:43,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Stem has 1 letters. Loop has 3 letters. [2022-02-21 03:25:43,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 33 states and 38 transitions. cyclomatic complexity: 6 Stem has 1 letters. Loop has 3 letters. [2022-02-21 03:25:43,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,651 INFO L161 tractBuchiDifference]: Finished testing correctness of buchiDifferenceNCSBLazy3 [2022-02-21 03:25:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:25:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-02-21 03:25:43,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2022-02-21 03:25:43,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 8 letters. Loop has 3 letters. [2022-02-21 03:25:43,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 6 letters. [2022-02-21 03:25:43,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-02-21 03:25:43,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 38 transitions. cyclomatic complexity: 6 [2022-02-21 03:25:43,683 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:25:43,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2022-02-21 03:25:43,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-02-21 03:25:43,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-02-21 03:25:43,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-02-21 03:25:43,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 03:25:43,688 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:25:43,688 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:25:43,688 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-21 03:25:43,688 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 03:25:43,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-02-21 03:25:43,688 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-02-21 03:25:43,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-02-21 03:25:43,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-02-21 03:25:43,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:25:43 BoogieIcfgContainer [2022-02-21 03:25:43,694 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:25:43,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:25:43,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:25:43,694 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:25:43,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:25:42" (3/4) ... [2022-02-21 03:25:43,696 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-21 03:25:43,697 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:25:43,697 INFO L158 Benchmark]: Toolchain (without parser) took 1903.51ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 43.5MB in the beginning and 88.4MB in the end (delta: -44.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:43,698 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:43,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.01ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 43.2MB in the beginning and 71.9MB in the end (delta: -28.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-02-21 03:25:43,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.78ms. Allocated memory is still 94.4MB. Free memory was 71.9MB in the beginning and 70.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:43,699 INFO L158 Benchmark]: Boogie Preprocessor took 14.54ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 69.6MB in the end (delta: 963.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:25:43,699 INFO L158 Benchmark]: RCFGBuilder took 173.31ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 60.9MB in the end (delta: 8.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-21 03:25:43,700 INFO L158 Benchmark]: BuchiAutomizer took 1391.43ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 60.7MB in the beginning and 88.4MB in the end (delta: -27.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:43,700 INFO L158 Benchmark]: Witness Printer took 2.64ms. Allocated memory is still 113.2MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:25:43,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.01ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 43.2MB in the beginning and 71.9MB in the end (delta: -28.7MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.78ms. Allocated memory is still 94.4MB. Free memory was 71.9MB in the beginning and 70.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.54ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 69.6MB in the end (delta: 963.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 173.31ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 60.9MB in the end (delta: 8.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1391.43ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 60.7MB in the beginning and 88.4MB in the end (delta: -27.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.64ms. Allocated memory is still 113.2MB. Free memory is still 88.4MB. 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(x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 11 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 60ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-02-21 03:25:43,726 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