./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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-restricted-15/McCarthyIterative.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 faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:18:30,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:18:30,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:18:30,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:18:30,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:18:30,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:18:30,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:18:30,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:18:30,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:18:30,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:18:30,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:18:30,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:18:30,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:18:30,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:18:30,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:18:30,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:18:30,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:18:30,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:18:30,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:18:30,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:18:30,088 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:18:30,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:18:30,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:18:30,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:18:30,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:18:30,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:18:30,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:18:30,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:18:30,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:18:30,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:18:30,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:18:30,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:18:30,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:18:30,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:18:30,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:18:30,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:18:30,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:18:30,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:18:30,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:18:30,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:18:30,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:18:30,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:18:30,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:18:30,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:18:30,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:18:30,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:18:30,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:18:30,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:18:30,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:18:30,140 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:18:30,140 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:18:30,140 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:18:30,141 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:18:30,141 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:18:30,142 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:18:30,142 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:18:30,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:18:30,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:18:30,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:18:30,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:18:30,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:18:30,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:18:30,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:18:30,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:18:30,145 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:18:30,145 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:18:30,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:18:30,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:18:30,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:18:30,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:18:30,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:18:30,148 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:18:30,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c [2022-07-23 14:18:30,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:18:30,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:18:30,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:18:30,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:18:30,385 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:18:30,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-07-23 14:18:30,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88774994e/977d88e551554a7c91a14e4d2e3e6ab1/FLAG71734a8ef [2022-07-23 14:18:30,796 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:18:30,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-07-23 14:18:30,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88774994e/977d88e551554a7c91a14e4d2e3e6ab1/FLAG71734a8ef [2022-07-23 14:18:31,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88774994e/977d88e551554a7c91a14e4d2e3e6ab1 [2022-07-23 14:18:31,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:18:31,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:18:31,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:18:31,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:18:31,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:18:31,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d62a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31, skipping insertion in model container [2022-07-23 14:18:31,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:18:31,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:18:31,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:18:31,380 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:18:31,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:18:31,407 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:18:31,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31 WrapperNode [2022-07-23 14:18:31,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:18:31,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:18:31,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:18:31,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:18:31,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,433 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-07-23 14:18:31,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:18:31,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:18:31,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:18:31,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:18:31,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:18:31,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:18:31,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:18:31,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:18:31,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (1/1) ... [2022-07-23 14:18:31,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:31,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:31,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:31,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:18:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:18:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:18:31,569 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:18:31,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:18:31,620 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:18:31,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:18:31,626 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 14:18:31,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:31 BoogieIcfgContainer [2022-07-23 14:18:31,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:18:31,629 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:18:31,629 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:18:31,631 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:18:31,632 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:31,632 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:18:31" (1/3) ... [2022-07-23 14:18:31,633 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3aa5e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:18:31, skipping insertion in model container [2022-07-23 14:18:31,633 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:31,633 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:31" (2/3) ... [2022-07-23 14:18:31,636 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3aa5e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:18:31, skipping insertion in model container [2022-07-23 14:18:31,636 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:31,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:31" (3/3) ... [2022-07-23 14:18:31,637 INFO L354 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2022-07-23 14:18:31,692 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:18:31,692 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:18:31,692 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:18:31,693 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:18:31,693 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:18:31,693 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:18:31,693 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:18:31,693 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:18:31,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:31,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:31,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:31,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:31,714 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:31,714 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:18:31,714 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:18:31,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:31,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:31,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:31,715 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:31,716 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:31,716 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:18:31,721 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue 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~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 2#L12-2true [2022-07-23 14:18:31,721 INFO L754 eck$LassoCheckResult]: Loop: 2#L12-2true assume !!(main_~c~0#1 > 0); 8#L12true assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2#L12-2true [2022-07-23 14:18:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:18:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530826236] [2022-07-23 14:18:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:31,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:31,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-07-23 14:18:31,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:31,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621720340] [2022-07-23 14:18:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:31,834 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:31,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-23 14:18:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:31,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503556558] [2022-07-23 14:18:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:31,848 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:31,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:31,912 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:31,913 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:31,913 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:31,913 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:31,913 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:31,913 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:31,913 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:31,914 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:31,914 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2022-07-23 14:18:31,914 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:31,914 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:31,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:31,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:31,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:31,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,072 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:32,073 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:32,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:32,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:18:32,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:32,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:32,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:32,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:18:32,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:32,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,139 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:32,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:32,143 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:32,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:32,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:32,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:32,144 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:32,144 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,144 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:32,144 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:32,144 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2022-07-23 14:18:32,144 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:32,144 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:32,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:32,246 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:32,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:32,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:18:32,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:32,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:32,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:32,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:32,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:32,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:32,270 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:32,270 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:32,275 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:32,280 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:32,281 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:32,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,283 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:32,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:18:32,287 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:32,288 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:32,289 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:32,289 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2022-07-23 14:18:32,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-07-23 14:18:32,311 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:32,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:32,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:32,353 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:32,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:32,388 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:32,389 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-07-23 14:18:32,424 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) Result 24 states and 31 transitions. Complement of second has 6 states. [2022-07-23 14:18:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-07-23 14:18:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-23 14:18:32,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-23 14:18:32,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:32,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 14:18:32,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:32,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-23 14:18:32,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:32,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-23 14:18:32,442 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:32,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-23 14:18:32,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-23 14:18:32,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-23 14:18:32,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-23 14:18:32,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:32,447 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:18:32,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-23 14:18:32,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-23 14:18:32,468 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) [2022-07-23 14:18:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-07-23 14:18:32,470 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:18:32,470 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:18:32,470 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:18:32,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-07-23 14:18:32,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:32,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:32,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:32,472 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:18:32,472 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:18:32,472 INFO L752 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 75#L12-2 assume !!(main_~c~0#1 > 0); 72#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 68#L12-2 [2022-07-23 14:18:32,473 INFO L754 eck$LassoCheckResult]: Loop: 68#L12-2 assume !!(main_~c~0#1 > 0); 69#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 68#L12-2 [2022-07-23 14:18:32,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-23 14:18:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:32,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406300230] [2022-07-23 14:18:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:32,488 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:32,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:32,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-07-23 14:18:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293439284] [2022-07-23 14:18:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:32,513 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:32,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-07-23 14:18:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:32,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985848619] [2022-07-23 14:18:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:32,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:18:32,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985848619] [2022-07-23 14:18:32,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985848619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:18:32,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:18:32,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 14:18:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908335272] [2022-07-23 14:18:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:18:32,609 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:32,610 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:32,610 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:32,610 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:32,610 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:32,610 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:32,611 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:32,611 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2022-07-23 14:18:32,611 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:32,611 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:32,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,671 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:32,672 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:32,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,673 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:32,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:18:32,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:32,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:32,689 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:32,705 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 [2022-07-23 14:18:32,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:32,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:18:32,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:32,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:32,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:32,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:32,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,769 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) [2022-07-23 14:18:32,776 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 [2022-07-23 14:18:32,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:32,783 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,815 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 [2022-07-23 14:18:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,817 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) [2022-07-23 14:18:32,817 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 [2022-07-23 14:18:32,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:32,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:32,834 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=1} Honda state: {ULTIMATE.start_main_~c~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=1}, {ULTIMATE.start_main_~c~0#1=0}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2022-07-23 14:18:32,850 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 [2022-07-23 14:18:32,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,851 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) [2022-07-23 14:18:32,852 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 [2022-07-23 14:18:32,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:32,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,905 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 [2022-07-23 14:18:32,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:32,907 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) [2022-07-23 14:18:32,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:32,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:32,920 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 [2022-07-23 14:18:32,942 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:32,945 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 [2022-07-23 14:18:32,946 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:32,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:32,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:32,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:32,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:32,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:32,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:32,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:32,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2022-07-23 14:18:32,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:32,946 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:32,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:32,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:33,035 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:33,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,048 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) [2022-07-23 14:18:33,085 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 [2022-07-23 14:18:33,086 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:33,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:33,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:33,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:33,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:33,096 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:33,096 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:33,114 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:33,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,181 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) [2022-07-23 14:18:33,182 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 [2022-07-23 14:18:33,184 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:33,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:33,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:33,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:33,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:33,192 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:33,192 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:33,203 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:33,218 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 [2022-07-23 14:18:33,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,219 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:18:33,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:33,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:33,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:33,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:33,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:33,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:33,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:33,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:33,230 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:33,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,248 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:18:33,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:33,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:33,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:33,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:33,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:33,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:33,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:33,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:33,258 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:33,261 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:33,261 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:33,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,262 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:18:33,265 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:33,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:33,265 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:33,265 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2022-07-23 14:18:33,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,281 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:33,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:33,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:33,332 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:33,336 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:33,336 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:33,344 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2022-07-23 14:18:33,345 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 [2022-07-23 14:18:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-23 14:18:33,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 14:18:33,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:33,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-23 14:18:33,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:33,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-07-23 14:18:33,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:33,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-07-23 14:18:33,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:33,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-07-23 14:18:33,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-23 14:18:33,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:18:33,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-07-23 14:18:33,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:33,348 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-23 14:18:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-07-23 14:18:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-23 14:18:33,349 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) [2022-07-23 14:18:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-07-23 14:18:33,350 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-23 14:18:33,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:18:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 14:18:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 14:18:33,353 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:18:33,367 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-07-23 14:18:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 14:18:33,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2022-07-23 14:18:33,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:33,369 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 17 transitions. [2022-07-23 14:18:33,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-23 14:18:33,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:18:33,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2022-07-23 14:18:33,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:33,370 INFO L369 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-23 14:18:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2022-07-23 14:18:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-07-23 14:18:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-07-23 14:18:33,372 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-07-23 14:18:33,372 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-07-23 14:18:33,372 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:18:33,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2022-07-23 14:18:33,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:18:33,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:33,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:33,373 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2022-07-23 14:18:33,373 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:18:33,374 INFO L752 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 161#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 155#L12-2 assume !!(main_~c~0#1 > 0); 156#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 166#L12-2 assume !!(main_~c~0#1 > 0); 162#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 163#L12-2 assume !!(main_~c~0#1 > 0); 158#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 165#L12-2 [2022-07-23 14:18:33,374 INFO L754 eck$LassoCheckResult]: Loop: 165#L12-2 assume !!(main_~c~0#1 > 0); 164#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 165#L12-2 [2022-07-23 14:18:33,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash 297591406, now seen corresponding path program 2 times [2022-07-23 14:18:33,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:33,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575732937] [2022-07-23 14:18:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:33,382 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:33,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-07-23 14:18:33,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:33,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381308253] [2022-07-23 14:18:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:33,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:33,393 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:33,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1777467309, now seen corresponding path program 3 times [2022-07-23 14:18:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603595240] [2022-07-23 14:18:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 14:18:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:18:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603595240] [2022-07-23 14:18:33,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603595240] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 14:18:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231073685] [2022-07-23 14:18:33,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 14:18:33,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 14:18:33,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,428 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-23 14:18:33,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-23 14:18:33,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 14:18:33,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:33,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:33,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 14:18:33,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 14:18:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 14:18:33,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231073685] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 14:18:33,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 14:18:33,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-07-23 14:18:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066133351] [2022-07-23 14:18:33,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 14:18:33,616 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:33,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:33,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:33,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:33,616 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:33,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,617 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:33,617 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:33,617 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2022-07-23 14:18:33,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:33,617 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:33,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,663 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:33,663 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:33,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,668 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:33,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:33,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 14:18:33,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:33,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:33,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:18:33,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:33,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:33,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,769 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:33,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:33,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 14:18:33,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:33,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=1} Honda state: {ULTIMATE.start_main_~c~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=1}, {ULTIMATE.start_main_~c~0#1=0}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2022-07-23 14:18:33,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 14:18:33,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:33,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:33,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,863 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 14:18:33,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:33,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:33,892 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:33,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:33,896 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:33,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:33,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:33,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:33,896 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:33,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:33,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:33,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2022-07-23 14:18:33,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:33,896 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:33,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:33,951 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:33,952 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:33,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:33,953 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:33,960 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:33,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:33,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:33,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:33,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:33,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:33,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:33,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:33,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 14:18:33,985 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:34,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,006 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 14:18:34,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:34,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:34,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:34,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:34,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:34,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:34,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:34,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:34,021 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:34,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:34,025 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:34,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,028 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:34,036 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:34,036 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:34,036 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2022-07-23 14:18:34,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-23 14:18:34,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,061 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,092 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:34,095 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:34,095 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,102 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 14 states and 20 transitions. Complement of second has 5 states. [2022-07-23 14:18:34,102 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 [2022-07-23 14:18:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-23 14:18:34,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-23 14:18:34,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,104 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:34,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,130 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:34,133 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:34,133 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 14 states and 20 transitions. Complement of second has 5 states. [2022-07-23 14:18:34,139 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 [2022-07-23 14:18:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-23 14:18:34,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-23 14:18:34,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,141 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,167 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:34,170 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:34,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,177 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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. [2022-07-23 14:18:34,177 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 [2022-07-23 14:18:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-23 14:18:34,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-23 14:18:34,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2022-07-23 14:18:34,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2022-07-23 14:18:34,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-07-23 14:18:34,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 14:18:34,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2022-07-23 14:18:34,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-23 14:18:34,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:18:34,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2022-07-23 14:18:34,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:34,182 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-07-23 14:18:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2022-07-23 14:18:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2022-07-23 14:18:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-07-23 14:18:34,183 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-23 14:18:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:18:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 14:18:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-23 14:18:34,184 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:18:34,195 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-07-23 14:18:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 14:18:34,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2022-07-23 14:18:34,197 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-23 14:18:34,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 15 transitions. [2022-07-23 14:18:34,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-23 14:18:34,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-23 14:18:34,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2022-07-23 14:18:34,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:34,198 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-07-23 14:18:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2022-07-23 14:18:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-07-23 14:18:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-23 14:18:34,199 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-23 14:18:34,200 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-23 14:18:34,200 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:18:34,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-23 14:18:34,200 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-23 14:18:34,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:34,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:34,201 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:34,201 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-07-23 14:18:34,201 INFO L752 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 414#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 408#L12-2 [2022-07-23 14:18:34,201 INFO L754 eck$LassoCheckResult]: Loop: 408#L12-2 assume !!(main_~c~0#1 > 0); 409#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 417#L12-2 assume !!(main_~c~0#1 > 0); 415#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 408#L12-2 [2022-07-23 14:18:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-07-23 14:18:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403478115] [2022-07-23 14:18:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953, now seen corresponding path program 1 times [2022-07-23 14:18:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:34,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080274939] [2022-07-23 14:18:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,212 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,216 INFO L85 PathProgramCache]: Analyzing trace with hash 889694155, now seen corresponding path program 4 times [2022-07-23 14:18:34,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:34,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806646902] [2022-07-23 14:18:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:34,264 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:34,264 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:34,264 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:34,264 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:34,264 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:34,264 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:34,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:34,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2022-07-23 14:18:34,265 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:34,265 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:34,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,316 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:34,316 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:34,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,318 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-23 14:18:34,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:34,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:34,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,360 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:34,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:34,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-23 14:18:34,384 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:34,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,410 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:34,410 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:34,410 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:34,411 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:34,411 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:34,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:34,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:34,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2022-07-23 14:18:34,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:34,411 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:34,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:34,470 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:34,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,472 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:34,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:34,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:34,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:34,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:34,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:34,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:34,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:34,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-23 14:18:34,499 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:34,501 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:34,502 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:34,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,503 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-23 14:18:34,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:34,516 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:34,516 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:34,516 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 201 Supporting invariants [] [2022-07-23 14:18:34,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,542 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:34,603 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:18:34,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,612 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 27 transitions. Complement of second has 5 states. [2022-07-23 14:18:34,613 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 [2022-07-23 14:18:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2022-07-23 14:18:34,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-23 14:18:34,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,617 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:34,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:34,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:34,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:34,665 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:18:34,665 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,687 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 33 transitions. Complement of second has 7 states. [2022-07-23 14:18:34,687 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 [2022-07-23 14:18:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2022-07-23 14:18:34,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-23 14:18:34,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2022-07-23 14:18:34,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 8 letters. [2022-07-23 14:18:34,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:34,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2022-07-23 14:18:34,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 14:18:34,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 17 states and 22 transitions. [2022-07-23 14:18:34,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-23 14:18:34,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-23 14:18:34,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2022-07-23 14:18:34,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:34,691 INFO L369 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-23 14:18:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2022-07-23 14:18:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-07-23 14:18:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2022-07-23 14:18:34,693 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-23 14:18:34,693 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-23 14:18:34,693 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 14:18:34,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2022-07-23 14:18:34,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 14:18:34,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:34,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:34,696 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2022-07-23 14:18:34,696 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:18:34,696 INFO L752 eck$LassoCheckResult]: Stem: 533#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 534#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 530#L12-2 assume !!(main_~c~0#1 > 0); 531#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 537#L12-2 assume !!(main_~c~0#1 > 0); 539#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 543#L12-2 assume !!(main_~c~0#1 > 0); 542#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 538#L12-2 assume !!(main_~c~0#1 > 0); 535#L12 [2022-07-23 14:18:34,696 INFO L754 eck$LassoCheckResult]: Loop: 535#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 536#L12-2 assume !!(main_~c~0#1 > 0); 535#L12 [2022-07-23 14:18:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,697 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 5 times [2022-07-23 14:18:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:34,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398408418] [2022-07-23 14:18:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,713 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-07-23 14:18:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:34,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101008817] [2022-07-23 14:18:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,721 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 790346520, now seen corresponding path program 6 times [2022-07-23 14:18:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:34,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949079141] [2022-07-23 14:18:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,743 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:34,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:34,773 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:34,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:34,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:34,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:34,773 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:34,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:34,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:34,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2022-07-23 14:18:34,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:34,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:34,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:34,826 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:34,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,827 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-23 14:18:34,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:34,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:34,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,870 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-23 14:18:34,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:34,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:34,914 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:34,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:34,919 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:34,920 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:34,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:34,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:34,920 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:34,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:34,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:34,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2022-07-23 14:18:34,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:34,920 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:34,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:34,978 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:34,978 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:34,980 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:34,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:34,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:34,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:34,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:34,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:34,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:34,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:34,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:34,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-23 14:18:35,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:35,017 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:18:35,017 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,018 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-23 14:18:35,020 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:35,020 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:35,020 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:35,020 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-23 14:18:35,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,045 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,075 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:35,087 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:18:35,088 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,092 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 21 transitions. Complement of second has 3 states. [2022-07-23 14:18:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-23 14:18:35,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-23 14:18:35,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,094 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,132 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:35,143 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:18:35,144 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,148 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 21 transitions. Complement of second has 3 states. [2022-07-23 14:18:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-23 14:18:35,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-23 14:18:35,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,149 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,174 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:35,189 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:18:35,189 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,196 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 25 states and 30 transitions. Complement of second has 4 states. [2022-07-23 14:18:35,196 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 [2022-07-23 14:18:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-23 14:18:35,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-23 14:18:35,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-07-23 14:18:35,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-23 14:18:35,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,199 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2022-07-23 14:18:35,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-23 14:18:35,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 25 transitions. [2022-07-23 14:18:35,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-23 14:18:35,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-23 14:18:35,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2022-07-23 14:18:35,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:35,200 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-07-23 14:18:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2022-07-23 14:18:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-07-23 14:18:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-07-23 14:18:35,202 INFO L392 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-23 14:18:35,202 INFO L374 stractBuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-23 14:18:35,202 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-23 14:18:35,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2022-07-23 14:18:35,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:18:35,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:35,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:35,203 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2022-07-23 14:18:35,203 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-07-23 14:18:35,204 INFO L752 eck$LassoCheckResult]: Stem: 730#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 731#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 727#L12-2 assume !!(main_~c~0#1 > 0); 728#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 742#L12-2 assume !!(main_~c~0#1 > 0); 736#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 740#L12-2 assume !!(main_~c~0#1 > 0); 739#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 735#L12-2 assume !!(main_~c~0#1 > 0); 732#L12 [2022-07-23 14:18:35,204 INFO L754 eck$LassoCheckResult]: Loop: 732#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 733#L12-2 assume !!(main_~c~0#1 > 0); 737#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 738#L12-2 assume !!(main_~c~0#1 > 0); 732#L12 [2022-07-23 14:18:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 7 times [2022-07-23 14:18:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:35,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593107753] [2022-07-23 14:18:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:35,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,210 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2022-07-23 14:18:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:35,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211718231] [2022-07-23 14:18:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,219 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash -686205165, now seen corresponding path program 8 times [2022-07-23 14:18:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369967984] [2022-07-23 14:18:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:35,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,228 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:35,267 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:35,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:35,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:35,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:35,268 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:35,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:35,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:35,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2022-07-23 14:18:35,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:35,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:35,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,311 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:35,311 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:35,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,316 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:35,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:35,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-23 14:18:35,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-07-23 14:18:35,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,367 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-07-23 14:18:35,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:35,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:35,395 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:35,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,419 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:35,419 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:35,419 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:35,419 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:35,419 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:35,419 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,419 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:35,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:35,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2022-07-23 14:18:35,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:35,419 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:35,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,494 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:35,495 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:35,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,498 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-07-23 14:18:35,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:35,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:35,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:35,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:35,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:35,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:35,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:35,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:35,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:35,516 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:35,516 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:35,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,517 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-07-23 14:18:35,519 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:35,519 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:35,519 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:35,519 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 221 Supporting invariants [] [2022-07-23 14:18:35,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,536 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:35,593 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:18:35,594 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 27 states and 33 transitions. Complement of second has 7 states. [2022-07-23 14:18:35,607 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 [2022-07-23 14:18:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-23 14:18:35,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-23 14:18:35,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,608 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:35,658 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:18:35,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,674 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 26 states and 33 transitions. Complement of second has 7 states. [2022-07-23 14:18:35,674 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 [2022-07-23 14:18:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-07-23 14:18:35,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-23 14:18:35,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,675 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:35,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:35,726 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:18:35,727 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,740 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 42 states and 53 transitions. Complement of second has 8 states. [2022-07-23 14:18:35,740 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 [2022-07-23 14:18:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2022-07-23 14:18:35,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-23 14:18:35,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 13 letters. Loop has 4 letters. [2022-07-23 14:18:35,741 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 8 letters. [2022-07-23 14:18:35,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:35,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 53 transitions. [2022-07-23 14:18:35,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-07-23 14:18:35,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 31 states and 40 transitions. [2022-07-23 14:18:35,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-23 14:18:35,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:18:35,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 40 transitions. [2022-07-23 14:18:35,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:35,744 INFO L369 hiAutomatonCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-07-23 14:18:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 40 transitions. [2022-07-23 14:18:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-07-23 14:18:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-07-23 14:18:35,746 INFO L392 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-07-23 14:18:35,746 INFO L374 stractBuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-07-23 14:18:35,746 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-23 14:18:35,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2022-07-23 14:18:35,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-07-23 14:18:35,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:35,747 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:35,748 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 3, 3, 1, 1] [2022-07-23 14:18:35,748 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1] [2022-07-23 14:18:35,748 INFO L752 eck$LassoCheckResult]: Stem: 1005#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1006#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 1007#L12-2 assume !!(main_~c~0#1 > 0); 1016#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1017#L12-2 assume !!(main_~c~0#1 > 0); 1014#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1012#L12-2 assume !!(main_~c~0#1 > 0); 1011#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1001#L12-2 assume !!(main_~c~0#1 > 0); 1002#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1009#L12-2 assume !!(main_~c~0#1 > 0); 1024#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1023#L12-2 assume !!(main_~c~0#1 > 0); 1021#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1020#L12-2 assume !!(main_~c~0#1 > 0); 1008#L12 [2022-07-23 14:18:35,748 INFO L754 eck$LassoCheckResult]: Loop: 1008#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1009#L12-2 assume !!(main_~c~0#1 > 0); 1024#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1023#L12-2 assume !!(main_~c~0#1 > 0); 1021#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1020#L12-2 assume !!(main_~c~0#1 > 0); 1008#L12 [2022-07-23 14:18:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1981740944, now seen corresponding path program 9 times [2022-07-23 14:18:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:35,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767832991] [2022-07-23 14:18:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:35,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 14:18:35,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:18:35,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767832991] [2022-07-23 14:18:35,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767832991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:18:35,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:18:35,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 14:18:35,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614775515] [2022-07-23 14:18:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:18:35,773 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 14:18:35,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1298898678, now seen corresponding path program 3 times [2022-07-23 14:18:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:35,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598009390] [2022-07-23 14:18:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,778 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:35,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:35,834 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:35,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:35,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:35,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:35,835 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:35,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:35,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:35,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2022-07-23 14:18:35,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:35,835 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:35,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,893 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:35,893 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:35,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,896 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-07-23 14:18:35,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:35,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:35,908 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:35,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:35,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,924 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-07-23 14:18:35,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:35,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:35,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:35,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:35,946 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:35,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-07-23 14:18:35,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:35,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:35,992 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:35,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-07-23 14:18:35,995 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:35,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:35,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:35,995 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:35,995 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:35,995 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:35,995 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:35,995 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:35,995 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2022-07-23 14:18:35,995 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:35,995 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:35,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:35,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:36,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:36,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:36,046 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:36,046 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:36,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:36,048 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:36,056 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:36,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:36,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:36,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:36,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:36,064 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:36,064 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:36,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-07-23 14:18:36,079 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:36,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:36,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:36,104 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:36,108 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:36,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:36,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:36,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:36,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:36,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:36,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:36,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:36,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-07-23 14:18:36,131 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:36,134 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:36,134 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:18:36,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:36,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:36,139 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:36,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-07-23 14:18:36,142 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:36,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:36,142 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:36,142 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = 1*ULTIMATE.start_main_~c~0#1 Supporting invariants [] [2022-07-23 14:18:36,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:36,166 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:36,245 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-23 14:18:36,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,250 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 36 transitions. Complement of second has 3 states. [2022-07-23 14:18:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-23 14:18:36,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-23 14:18:36,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,251 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:36,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:36,348 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-23 14:18:36,349 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,354 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 36 transitions. Complement of second has 3 states. [2022-07-23 14:18:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-23 14:18:36,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-23 14:18:36,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,356 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:36,446 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-23 14:18:36,446 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,458 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 61 transitions. Complement of second has 4 states. [2022-07-23 14:18:36,458 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 [2022-07-23 14:18:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-23 14:18:36,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-23 14:18:36,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,459 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:36,526 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-23 14:18:36,526 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 61 transitions. Complement of second has 4 states. [2022-07-23 14:18:36,541 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 [2022-07-23 14:18:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-23 14:18:36,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-23 14:18:36,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,542 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 14:18:36,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:36,620 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-23 14:18:36,621 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,714 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,714 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,720 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,721 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,732 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,732 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,738 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,738 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,753 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,753 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,753 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,753 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,754 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,754 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-23 14:18:36,754 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 719 states and 1229 transitions. Complement of second has 174 states 11 powerset states163 rank states. The highest rank that occured is 7 [2022-07-23 14:18:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 31 transitions. [2022-07-23 14:18:36,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-23 14:18:36,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 21 letters. Loop has 6 letters. [2022-07-23 14:18:36,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 12 letters. [2022-07-23 14:18:36,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:36,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 719 states and 1229 transitions. [2022-07-23 14:18:36,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2022-07-23 14:18:36,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 719 states to 450 states and 747 transitions. [2022-07-23 14:18:36,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-07-23 14:18:36,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2022-07-23 14:18:36,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 747 transitions. [2022-07-23 14:18:36,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:36,773 INFO L369 hiAutomatonCegarLoop]: Abstraction has 450 states and 747 transitions. [2022-07-23 14:18:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 747 transitions. [2022-07-23 14:18:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 157. [2022-07-23 14:18:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 157 states have (on average 1.78343949044586) internal successors, (280), 156 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 280 transitions. [2022-07-23 14:18:36,788 INFO L392 hiAutomatonCegarLoop]: Abstraction has 157 states and 280 transitions. [2022-07-23 14:18:36,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:18:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 14:18:36,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-23 14:18:36,789 INFO L87 Difference]: Start difference. First operand 157 states and 280 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:18:36,800 INFO L93 Difference]: Finished difference Result 189 states and 305 transitions. [2022-07-23 14:18:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 14:18:36,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 305 transitions. [2022-07-23 14:18:36,802 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2022-07-23 14:18:36,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 174 states and 280 transitions. [2022-07-23 14:18:36,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-07-23 14:18:36,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-07-23 14:18:36,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 280 transitions. [2022-07-23 14:18:36,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:36,804 INFO L369 hiAutomatonCegarLoop]: Abstraction has 174 states and 280 transitions. [2022-07-23 14:18:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 280 transitions. [2022-07-23 14:18:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2022-07-23 14:18:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 151 states have (on average 1.6754966887417218) internal successors, (253), 150 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 253 transitions. [2022-07-23 14:18:36,812 INFO L392 hiAutomatonCegarLoop]: Abstraction has 151 states and 253 transitions. [2022-07-23 14:18:36,812 INFO L374 stractBuchiCegarLoop]: Abstraction has 151 states and 253 transitions. [2022-07-23 14:18:36,812 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-23 14:18:36,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 253 transitions. [2022-07-23 14:18:36,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2022-07-23 14:18:36,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:36,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:36,814 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2022-07-23 14:18:36,814 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 3, 3] [2022-07-23 14:18:36,814 INFO L752 eck$LassoCheckResult]: Stem: 2779#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2780#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 2838#L12-2 assume !!(main_~c~0#1 > 0); 2839#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2836#L12-2 assume !!(main_~c~0#1 > 0); 2831#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2827#L12-2 assume !!(main_~c~0#1 > 0); 2828#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2775#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2022-07-23 14:18:36,814 INFO L754 eck$LassoCheckResult]: Loop: 2776#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2858#L12-2 assume !!(main_~c~0#1 > 0); 2857#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2855#L12-2 assume !!(main_~c~0#1 > 0); 2808#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2862#L12-2 assume !!(main_~c~0#1 > 0); 2805#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2791#L12-2 assume !!(main_~c~0#1 > 0); 2860#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2800#L12-2 assume !!(main_~c~0#1 > 0); 2811#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2789#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2022-07-23 14:18:36,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,815 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 10 times [2022-07-23 14:18:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:36,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920290738] [2022-07-23 14:18:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:36,818 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:36,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1074943081, now seen corresponding path program 4 times [2022-07-23 14:18:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:36,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625391249] [2022-07-23 14:18:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 14:18:36,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:18:36,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625391249] [2022-07-23 14:18:36,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625391249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:18:36,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:18:36,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:18:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182225899] [2022-07-23 14:18:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:18:36,849 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 14:18:36,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:18:36,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 14:18:36,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 14:18:36,850 INFO L87 Difference]: Start difference. First operand 151 states and 253 transitions. cyclomatic complexity: 115 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:18:36,859 INFO L93 Difference]: Finished difference Result 136 states and 207 transitions. [2022-07-23 14:18:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 14:18:36,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 207 transitions. [2022-07-23 14:18:36,861 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:18:36,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 0 states and 0 transitions. [2022-07-23 14:18:36,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:18:36,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:18:36,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:18:36,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:18:36,861 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:36,861 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:36,862 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:36,862 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-23 14:18:36,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:18:36,862 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:18:36,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:18:36,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:18:36 BoogieIcfgContainer [2022-07-23 14:18:36,868 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:18:36,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:18:36,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:18:36,868 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:18:36,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:31" (3/4) ... [2022-07-23 14:18:36,871 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:18:36,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:18:36,871 INFO L158 Benchmark]: Toolchain (without parser) took 5633.11ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 51.9MB in the beginning and 28.1MB in the end (delta: 23.8MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-07-23 14:18:36,872 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:36,872 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.78ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 69.4MB in the end (delta: -17.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 14:18:36,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.61ms. Allocated memory is still 92.3MB. Free memory was 69.4MB in the beginning and 67.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:36,872 INFO L158 Benchmark]: Boogie Preprocessor took 16.19ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 67.0MB in the end (delta: 972.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:18:36,873 INFO L158 Benchmark]: RCFGBuilder took 175.69ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 59.2MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 14:18:36,873 INFO L158 Benchmark]: BuchiAutomizer took 5239.17ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 59.2MB in the beginning and 28.1MB in the end (delta: 31.1MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2022-07-23 14:18:36,873 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 111.1MB. Free memory is still 28.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:36,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.78ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 69.4MB in the end (delta: -17.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.61ms. Allocated memory is still 92.3MB. Free memory was 69.4MB in the beginning and 67.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.19ms. Allocated memory is still 92.3MB. Free memory was 67.9MB in the beginning and 67.0MB in the end (delta: 972.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 175.69ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 59.2MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 5239.17ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 59.2MB in the beginning and 28.1MB in the end (delta: 31.1MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 111.1MB. Free memory is still 28.1MB. 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 11 terminating modules (4 trivial, 3 deterministic, 4 nondeterministic). One deterministic module has affine ranking function 211 + -2 * x and consists of 4 locations. One deterministic module has affine ranking function 211 + -2 * x and consists of 3 locations. One deterministic module has affine ranking function 201 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 211 + -2 * x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function 221 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function c and consists of 8 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 9 iterations. TraceHistogramMax:7. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 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, 1, 3, 0, 1]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/10 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 104 mSDtfsCounter, 153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax159 hnf100 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf94 smp100 dnf100 smp100 tf111 neg95 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 78ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:18:36,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:37,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE