./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 26d01a9c 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-numeric/twisted.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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 08:56:48,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 08:56:48,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 08:56:48,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 08:56:48,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 08:56:48,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 08:56:48,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 08:56:48,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 08:56:48,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 08:56:48,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 08:56:48,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 08:56:48,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 08:56:48,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 08:56:48,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 08:56:48,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 08:56:48,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 08:56:48,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 08:56:48,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 08:56:48,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 08:56:48,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 08:56:48,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 08:56:48,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 08:56:48,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 08:56:48,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 08:56:48,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 08:56:48,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 08:56:48,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 08:56:48,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 08:56:48,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 08:56:48,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 08:56:48,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 08:56:48,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 08:56:48,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 08:56:48,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 08:56:48,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 08:56:48,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 08:56:48,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 08:56:48,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 08:56:48,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 08:56:48,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 08:56:48,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 08:56:48,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-18 08:56:48,150 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 08:56:48,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 08:56:48,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 08:56:48,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 08:56:48,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 08:56:48,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 08:56:48,152 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 08:56:48,153 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-18 08:56:48,153 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-18 08:56:48,153 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-18 08:56:48,153 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-18 08:56:48,154 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-18 08:56:48,154 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-18 08:56:48,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 08:56:48,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 08:56:48,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 08:56:48,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 08:56:48,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-18 08:56:48,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 08:56:48,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 08:56:48,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 08:56:48,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 08:56:48,157 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-18 08:56:48,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2023-02-18 08:56:48,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 08:56:48,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 08:56:48,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 08:56:48,374 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 08:56:48,375 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 08:56:48,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/twisted.c [2023-02-18 08:56:49,326 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 08:56:49,460 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 08:56:49,461 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/twisted.c [2023-02-18 08:56:49,465 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240304729/0588ad64e98e416386c77d727298627c/FLAG2ad3a2748 [2023-02-18 08:56:49,476 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240304729/0588ad64e98e416386c77d727298627c [2023-02-18 08:56:49,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 08:56:49,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 08:56:49,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 08:56:49,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 08:56:49,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 08:56:49,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e339f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49, skipping insertion in model container [2023-02-18 08:56:49,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 08:56:49,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 08:56:49,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:56:49,609 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 08:56:49,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:56:49,623 INFO L208 MainTranslator]: Completed translation [2023-02-18 08:56:49,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49 WrapperNode [2023-02-18 08:56:49,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 08:56:49,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 08:56:49,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 08:56:49,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 08:56:49,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,642 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-02-18 08:56:49,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 08:56:49,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 08:56:49,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 08:56:49,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 08:56:49,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 08:56:49,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 08:56:49,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 08:56:49,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 08:56:49,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (1/1) ... [2023-02-18 08:56:49,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:49,673 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) [2023-02-18 08:56:49,683 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 [2023-02-18 08:56:49,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 08:56:49,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 08:56:49,741 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 08:56:49,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 08:56:49,796 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 08:56:49,800 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 08:56:49,800 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 08:56:49,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:56:49 BoogieIcfgContainer [2023-02-18 08:56:49,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 08:56:49,802 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-18 08:56:49,802 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-18 08:56:49,805 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-18 08:56:49,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 08:56:49,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.02 08:56:49" (1/3) ... [2023-02-18 08:56:49,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@246120a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 08:56:49, skipping insertion in model container [2023-02-18 08:56:49,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 08:56:49,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:56:49" (2/3) ... [2023-02-18 08:56:49,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@246120a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 08:56:49, skipping insertion in model container [2023-02-18 08:56:49,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 08:56:49,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:56:49" (3/3) ... [2023-02-18 08:56:49,807 INFO L332 chiAutomizerObserver]: Analyzing ICFG twisted.c [2023-02-18 08:56:49,838 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-18 08:56:49,838 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-18 08:56:49,838 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-18 08:56:49,838 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-18 08:56:49,839 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-18 08:56:49,839 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-18 08:56:49,839 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-18 08:56:49,839 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-18 08:56:49,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2023-02-18 08:56:49,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-18 08:56:49,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:56:49,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:56:49,854 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 08:56:49,854 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-18 08:56:49,855 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-18 08:56:49,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2023-02-18 08:56:49,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-18 08:56:49,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:56:49,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:56:49,856 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 08:56:49,856 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-18 08:56:49,862 INFO L748 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 8#$Ultimate##3true [2023-02-18 08:56:49,863 INFO L750 eck$LassoCheckResult]: Loop: 8#$Ultimate##3true assume !true; 13#$Ultimate##10true goto; 9#$Ultimate##12true assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 5#L15true assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 8#$Ultimate##3true [2023-02-18 08:56:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-18 08:56:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:49,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83792091] [2023-02-18 08:56:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:49,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:49,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:49,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1481770, now seen corresponding path program 1 times [2023-02-18 08:56:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:49,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675376398] [2023-02-18 08:56:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:49,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:56:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:56:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:56:49,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675376398] [2023-02-18 08:56:49,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675376398] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:56:49,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:56:49,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-18 08:56:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172222406] [2023-02-18 08:56:49,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:56:49,978 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-18 08:56:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:56:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 08:56:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 08:56:50,004 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 1 states have internal predecessors, (4), 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) [2023-02-18 08:56:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:56:50,007 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2023-02-18 08:56:50,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2023-02-18 08:56:50,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-18 08:56:50,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 11 transitions. [2023-02-18 08:56:50,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-18 08:56:50,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-18 08:56:50,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-18 08:56:50,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 08:56:50,012 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 08:56:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-18 08:56:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-18 08:56:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-02-18 08:56:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-02-18 08:56:50,026 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 08:56:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 08:56:50,029 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 08:56:50,029 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-18 08:56:50,029 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-02-18 08:56:50,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-18 08:56:50,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:56:50,030 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:56:50,030 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 08:56:50,030 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-02-18 08:56:50,030 INFO L748 eck$LassoCheckResult]: Stem: 39#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 40#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 41#$Ultimate##3 [2023-02-18 08:56:50,030 INFO L750 eck$LassoCheckResult]: Loop: 41#$Ultimate##3 goto; 36#$Ultimate##5 assume !(f_~i~0#1 < f_~k#1); 37#$Ultimate##10 goto; 34#$Ultimate##12 assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 35#L15 assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 41#$Ultimate##3 [2023-02-18 08:56:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-02-18 08:56:50,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:50,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183289449] [2023-02-18 08:56:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:50,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,042 INFO L85 PathProgramCache]: Analyzing trace with hash 34460407, now seen corresponding path program 1 times [2023-02-18 08:56:50,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:50,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328157722] [2023-02-18 08:56:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:50,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1805899893, now seen corresponding path program 1 times [2023-02-18 08:56:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:50,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355875643] [2023-02-18 08:56:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:50,083 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:56:50,084 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:56:50,084 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:56:50,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:56:50,084 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 08:56:50,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:56:50,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:56:50,085 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2023-02-18 08:56:50,085 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:56:50,085 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:56:50,116 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,129 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,131 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,154 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:56:50,154 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 08:56:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,158 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) [2023-02-18 08:56:50,159 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 [2023-02-18 08:56:50,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:56:50,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:56:50,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:56:50,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_~i~0#1=0, ULTIMATE.start_f_~k#1=-4} Honda state: {ULTIMATE.start_f_~i~0#1=0, ULTIMATE.start_f_~k#1=-4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:56:50,192 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 [2023-02-18 08:56:50,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,194 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) [2023-02-18 08:56:50,195 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 [2023-02-18 08:56:50,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:56:50,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:56:50,215 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 [2023-02-18 08:56:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,216 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) [2023-02-18 08:56:50,218 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 [2023-02-18 08:56:50,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 08:56:50,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:56:50,330 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 08:56:50,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-18 08:56:50,336 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:56:50,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:56:50,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:56:50,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:56:50,336 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 08:56:50,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:56:50,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:56:50,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2023-02-18 08:56:50,337 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:56:50,337 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:56:50,338 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,350 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,352 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,355 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:56:50,358 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 08:56:50,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,369 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) [2023-02-18 08:56:50,383 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 [2023-02-18 08:56:50,391 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 [2023-02-18 08:56:50,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:56:50,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:56:50,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:56:50,398 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-18 08:56:50,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:56:50,409 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2023-02-18 08:56:50,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:56:50,432 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:56:50,438 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 [2023-02-18 08:56:50,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,439 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) [2023-02-18 08:56:50,441 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 [2023-02-18 08:56:50,442 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 [2023-02-18 08:56:50,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:56:50,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:56:50,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:56:50,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:56:50,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:56:50,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:56:50,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:56:50,465 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 08:56:50,468 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 08:56:50,468 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-18 08:56:50,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,501 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) [2023-02-18 08:56:50,502 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 [2023-02-18 08:56:50,504 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 08:56:50,504 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 08:56:50,504 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 08:56:50,505 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0#1, ULTIMATE.start_f_~l#1) = -1*ULTIMATE.start_f_~j~0#1 + 1*ULTIMATE.start_f_~l#1 Supporting invariants [] [2023-02-18 08:56:50,509 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 [2023-02-18 08:56:50,511 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 08:56:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:56:50,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:56:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:56:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:56:50,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:56:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:56:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:56:50,585 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:56:50,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-18 08:56:50,603 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 16 states and 23 transitions. Complement of second has 4 states. [2023-02-18 08:56:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:56:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-18 08:56:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2023-02-18 08:56:50,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 5 letters. [2023-02-18 08:56:50,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:56:50,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 5 letters. [2023-02-18 08:56:50,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:56:50,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 10 letters. [2023-02-18 08:56:50,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:56:50,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-02-18 08:56:50,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:56:50,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2023-02-18 08:56:50,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-18 08:56:50,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-02-18 08:56:50,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2023-02-18 08:56:50,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-18 08:56:50,608 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2023-02-18 08:56:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2023-02-18 08:56:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-18 08:56:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-02-18 08:56:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-02-18 08:56:50,610 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-18 08:56:50,610 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-18 08:56:50,610 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-18 08:56:50,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2023-02-18 08:56:50,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-18 08:56:50,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 08:56:50,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 08:56:50,612 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-18 08:56:50,612 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-18 08:56:50,612 INFO L748 eck$LassoCheckResult]: Stem: 105#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 109#$Ultimate##3 goto; 100#$Ultimate##5 [2023-02-18 08:56:50,612 INFO L750 eck$LassoCheckResult]: Loop: 100#$Ultimate##5 assume !!(f_~i~0#1 < f_~k#1);f_#t~post0#1 := f_~i~0#1;f_~i~0#1 := 1 + f_#t~post0#1;havoc f_#t~post0#1; 101#L8 assume 0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2); 100#$Ultimate##5 [2023-02-18 08:56:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2023-02-18 08:56:50,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:50,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811939403] [2023-02-18 08:56:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:50,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-02-18 08:56:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:50,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933304199] [2023-02-18 08:56:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2023-02-18 08:56:50,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:56:50,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338109759] [2023-02-18 08:56:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:56:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:56:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 08:56:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 08:56:50,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 08:56:50,648 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:56:50,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:56:50,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:56:50,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:56:50,648 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 08:56:50,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:56:50,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:56:50,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2023-02-18 08:56:50,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:56:50,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:56:50,649 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,650 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,653 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:56:50,653 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 08:56:50,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,655 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) [2023-02-18 08:56:50,657 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 [2023-02-18 08:56:50,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:56:50,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:56:50,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 08:56:50,667 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0#1=0} Honda state: {ULTIMATE.start_f_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-18 08:56:50,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-18 08:56:50,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,671 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-02-18 08:56:50,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-18 08:56:50,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 08:56:50,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:56:50,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-18 08:56:50,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,692 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-02-18 08:56:50,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-18 08:56:50,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 08:56:50,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 08:56:50,881 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 08:56:50,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-18 08:56:50,885 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 08:56:50,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 08:56:50,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 08:56:50,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 08:56:50,885 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 08:56:50,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 08:56:50,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 08:56:50,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2023-02-18 08:56:50,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 08:56:50,886 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 08:56:50,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,888 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 08:56:50,891 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 08:56:50,891 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 08:56:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,892 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-02-18 08:56:50,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-18 08:56:50,897 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 [2023-02-18 08:56:50,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:56:50,904 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:56:50,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:56:50,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 08:56:50,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:56:50,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 08:56:50,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:56:50,919 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 08:56:50,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-18 08:56:50,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,938 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-02-18 08:56:50,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-18 08:56:50,941 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 [2023-02-18 08:56:50,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 08:56:50,947 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 08:56:50,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 08:56:50,947 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-18 08:56:50,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 08:56:50,956 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2023-02-18 08:56:50,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 08:56:50,980 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 08:56:50,993 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 08:56:50,993 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-18 08:56:50,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 08:56:50,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:56:50,996 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-02-18 08:56:50,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-18 08:56:50,998 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 08:56:50,998 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 08:56:50,998 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 08:56:50,998 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~k#1, ULTIMATE.start_f_~i~0#1) = 1*ULTIMATE.start_f_~k#1 - 1*ULTIMATE.start_f_~i~0#1 Supporting invariants [] [2023-02-18 08:56:51,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-02-18 08:56:51,019 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 08:56:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:56:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:56:51,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 08:56:51,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:56:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:56:51,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 08:56:51,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:56:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:56:51,044 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-18 08:56:51,045 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-02-18 08:56:51,056 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 22 states and 32 transitions. Complement of second has 4 states. [2023-02-18 08:56:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 08:56:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-02-18 08:56:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2023-02-18 08:56:51,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-18 08:56:51,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:56:51,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-18 08:56:51,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:56:51,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-18 08:56:51,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 08:56:51,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2023-02-18 08:56:51,058 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 08:56:51,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2023-02-18 08:56:51,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-18 08:56:51,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-18 08:56:51,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-18 08:56:51,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 08:56:51,059 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 08:56:51,059 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 08:56:51,059 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 08:56:51,059 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-18 08:56:51,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-18 08:56:51,059 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 08:56:51,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-18 08:56:51,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.02 08:56:51 BoogieIcfgContainer [2023-02-18 08:56:51,065 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-18 08:56:51,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 08:56:51,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 08:56:51,065 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 08:56:51,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:56:49" (3/4) ... [2023-02-18 08:56:51,067 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-18 08:56:51,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 08:56:51,068 INFO L158 Benchmark]: Toolchain (without parser) took 1588.38ms. Allocated memory is still 127.9MB. Free memory was 91.0MB in the beginning and 59.6MB in the end (delta: 31.4MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2023-02-18 08:56:51,068 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 99.2MB in the beginning and 99.1MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:56:51,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.60ms. Allocated memory is still 127.9MB. Free memory was 90.6MB in the beginning and 81.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 08:56:51,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.95ms. Allocated memory is still 127.9MB. Free memory was 81.8MB in the beginning and 80.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 08:56:51,069 INFO L158 Benchmark]: Boogie Preprocessor took 11.00ms. Allocated memory is still 127.9MB. Free memory was 80.1MB in the beginning and 79.2MB in the end (delta: 909.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:56:51,069 INFO L158 Benchmark]: RCFGBuilder took 147.39ms. Allocated memory is still 127.9MB. Free memory was 79.2MB in the beginning and 70.1MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 08:56:51,070 INFO L158 Benchmark]: BuchiAutomizer took 1262.33ms. Allocated memory is still 127.9MB. Free memory was 70.1MB in the beginning and 60.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2023-02-18 08:56:51,070 INFO L158 Benchmark]: Witness Printer took 2.42ms. Allocated memory is still 127.9MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 08:56:51,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 127.9MB. Free memory was 99.2MB in the beginning and 99.1MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 142.60ms. Allocated memory is still 127.9MB. Free memory was 90.6MB in the beginning and 81.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.95ms. Allocated memory is still 127.9MB. Free memory was 81.8MB in the beginning and 80.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.00ms. Allocated memory is still 127.9MB. Free memory was 80.1MB in the beginning and 79.2MB in the end (delta: 909.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 147.39ms. Allocated memory is still 127.9MB. Free memory was 79.2MB in the beginning and 70.1MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1262.33ms. Allocated memory is still 127.9MB. Free memory was 70.1MB in the beginning and 60.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 2.42ms. Allocated memory is still 127.9MB. Free memory is still 59.6MB. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * j + l and consists of 3 locations. One deterministic module has affine ranking function k + -1 * i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 32 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital28 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div298 bol100 ite100 ukn100 eq145 hnf96 smp100 dnf214 smp100 tf101 neg96 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 73ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-18 08:56:51,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-18 08:56:51,292 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 [2023-02-18 08:56:51,495 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