./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 35987657 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-?-3598765 [2022-07-22 01:30:33,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:30:33,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:30:33,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:30:33,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:30:33,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:30:33,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:30:33,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:30:33,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:30:33,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:30:33,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:30:33,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:30:33,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:30:33,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:30:33,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:30:33,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:30:33,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:30:33,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:30:33,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:30:33,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:30:33,906 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:30:33,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:30:33,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:30:33,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:30:33,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:30:33,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:30:33,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:30:33,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:30:33,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:30:33,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:30:33,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:30:33,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:30:33,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:30:33,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:30:33,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:30:33,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:30:33,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:30:33,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:30:33,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:30:33,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:30:33,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:30:33,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:30:33,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:30:33,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:30:33,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:30:33,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:30:33,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:30:33,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:30:33,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:30:33,976 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:30:33,976 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:30:33,976 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:30:33,977 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:30:33,977 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:30:33,978 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:30:33,978 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:30:33,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:30:33,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:30:33,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:30:33,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:30:33,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:30:33,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:30:33,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:30:33,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:30:33,980 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:30:33,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:30:33,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:30:33,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:30:33,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:30:33,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:30:33,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:30:33,983 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:30:33,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c [2022-07-22 01:30:34,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:30:34,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:30:34,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:30:34,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:30:34,323 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:30:34,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-07-22 01:30:34,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fff4432/3611348723984c638dc1d3047fcfe5e7/FLAG016caf9ed [2022-07-22 01:30:34,775 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:30:34,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-07-22 01:30:34,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fff4432/3611348723984c638dc1d3047fcfe5e7/FLAG016caf9ed [2022-07-22 01:30:34,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6fff4432/3611348723984c638dc1d3047fcfe5e7 [2022-07-22 01:30:34,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:30:34,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:30:34,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:30:34,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:30:34,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:30:34,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:34,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1f440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34, skipping insertion in model container [2022-07-22 01:30:34,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:34,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:30:34,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:30:34,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:30:34,961 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:30:34,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:30:34,983 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:30:34,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34 WrapperNode [2022-07-22 01:30:34,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:30:34,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:30:34,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:30:34,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:30:34,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:34,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,008 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-07-22 01:30:35,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:30:35,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:30:35,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:30:35,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:30:35,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:30:35,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:30:35,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:30:35,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:30:35,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (1/1) ... [2022-07-22 01:30:35,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:35,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:35,056 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) [2022-07-22 01:30:35,079 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 [2022-07-22 01:30:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:30:35,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:30:35,145 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:30:35,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:30:35,235 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:30:35,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:30:35,242 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:30:35,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:30:35 BoogieIcfgContainer [2022-07-22 01:30:35,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:30:35,245 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:30:35,245 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:30:35,247 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:30:35,248 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:30:35,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:30:34" (1/3) ... [2022-07-22 01:30:35,249 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@141bfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:30:35, skipping insertion in model container [2022-07-22 01:30:35,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:30:35,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:30:34" (2/3) ... [2022-07-22 01:30:35,250 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@141bfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:30:35, skipping insertion in model container [2022-07-22 01:30:35,250 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:30:35,250 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:30:35" (3/3) ... [2022-07-22 01:30:35,251 INFO L354 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2022-07-22 01:30:35,316 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:30:35,316 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:30:35,316 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:30:35,317 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:30:35,317 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:30:35,317 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:30:35,317 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:30:35,317 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:30:35,321 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) [2022-07-22 01:30:35,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:35,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:35,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:35,345 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:30:35,346 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:30:35,346 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:30:35,346 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) [2022-07-22 01:30:35,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:35,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:35,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:35,348 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:30:35,348 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:30:35,354 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 [2022-07-22 01:30:35,354 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 [2022-07-22 01:30:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-22 01:30:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:35,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341731127] [2022-07-22 01:30:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:35,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:35,471 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-07-22 01:30:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:35,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098209191] [2022-07-22 01:30:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:35,497 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:35,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:35,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:35,514 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-22 01:30:35,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:35,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983989595] [2022-07-22 01:30:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:35,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:35,525 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:35,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:35,647 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:35,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:35,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:35,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:35,648 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:35,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:35,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:35,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:35,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2022-07-22 01:30:35,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:35,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:35,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,766 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:35,767 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:35,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:35,769 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) [2022-07-22 01:30:35,770 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 [2022-07-22 01:30:35,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:35,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:35,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-22 01:30:35,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:35,798 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) [2022-07-22 01:30:35,798 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 [2022-07-22 01:30:35,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:35,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:35,830 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:35,840 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 [2022-07-22 01:30:35,840 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:35,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:35,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:35,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:35,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:35,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:35,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:35,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:35,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2022-07-22 01:30:35,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:35,841 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:35,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:35,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:35,952 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:35,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:35,962 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) [2022-07-22 01:30:35,964 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 [2022-07-22 01:30:35,965 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 [2022-07-22 01:30:35,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:35,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:35,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:35,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:35,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:35,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:35,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:35,999 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:36,004 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:30:36,005 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:30:36,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,012 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) [2022-07-22 01:30:36,013 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 [2022-07-22 01:30:36,015 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:36,015 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:36,016 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:36,016 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 [] [2022-07-22 01:30:36,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-22 01:30:36,039 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:36,086 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:36,123 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 [2022-07-22 01:30:36,124 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) [2022-07-22 01:30:36,154 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. [2022-07-22 01:30:36,155 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 [2022-07-22 01:30:36,161 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) [2022-07-22 01:30:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-22 01:30:36,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-22 01:30:36,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:36,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-22 01:30:36,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:36,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-22 01:30:36,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:36,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-22 01:30:36,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:36,168 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-22 01:30:36,168 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-22 01:30:36,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-22 01:30:36,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-22 01:30:36,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:36,169 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-22 01:30:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-22 01:30:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-22 01:30:36,188 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) [2022-07-22 01:30:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-07-22 01:30:36,189 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-22 01:30:36,189 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-22 01:30:36,189 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:30:36,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-07-22 01:30:36,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:36,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:36,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:36,190 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-22 01:30:36,191 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:30:36,191 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 [2022-07-22 01:30:36,191 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 [2022-07-22 01:30:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-22 01:30:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832119200] [2022-07-22 01:30:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:36,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:36,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:36,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-07-22 01:30:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:36,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428362134] [2022-07-22 01:30:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:36,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:36,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:36,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-07-22 01:30:36,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:36,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565726391] [2022-07-22 01:30:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:36,259 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 [2022-07-22 01:30:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:36,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:30:36,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565726391] [2022-07-22 01:30:36,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565726391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:30:36,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:30:36,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 01:30:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783476173] [2022-07-22 01:30:36,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:30:36,313 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:36,313 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:36,313 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:36,313 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:36,314 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:36,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:36,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:36,314 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2022-07-22 01:30:36,314 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:36,314 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:36,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,371 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:36,371 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:36,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,373 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) [2022-07-22 01:30:36,381 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 [2022-07-22 01:30:36,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:36,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:36,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:30:36,398 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: [] [2022-07-22 01:30:36,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-22 01:30:36,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,415 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) [2022-07-22 01:30:36,416 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 [2022-07-22 01:30:36,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:36,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:36,432 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:30:36,432 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: [] [2022-07-22 01:30:36,448 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 [2022-07-22 01:30:36,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,449 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) [2022-07-22 01:30:36,451 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 [2022-07-22 01:30:36,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:36,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:36,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-22 01:30:36,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,503 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) [2022-07-22 01:30:36,509 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 [2022-07-22 01:30:36,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:36,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:36,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:30:36,537 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] [2022-07-22 01:30:36,561 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 [2022-07-22 01:30:36,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,564 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) [2022-07-22 01:30:36,569 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 [2022-07-22 01:30:36,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:36,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:36,596 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 [2022-07-22 01:30:36,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,598 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) [2022-07-22 01:30:36,599 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 [2022-07-22 01:30:36,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:36,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:36,628 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:36,631 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 [2022-07-22 01:30:36,632 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:36,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:36,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:36,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:36,632 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:36,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:36,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:36,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2022-07-22 01:30:36,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:36,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:36,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:36,705 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:36,705 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:36,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,708 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) [2022-07-22 01:30:36,717 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 [2022-07-22 01:30:36,717 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 [2022-07-22 01:30:36,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:36,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:36,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:36,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:36,728 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:30:36,728 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:30:36,735 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:30:36,759 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 [2022-07-22 01:30:36,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,761 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) [2022-07-22 01:30:36,768 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 [2022-07-22 01:30:36,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:36,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:36,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:36,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:36,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:30:36,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:30:36,782 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 [2022-07-22 01:30:36,794 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:30:36,811 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 [2022-07-22 01:30:36,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,813 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) [2022-07-22 01:30:36,814 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 [2022-07-22 01:30:36,815 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 [2022-07-22 01:30:36,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:36,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:36,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:36,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:36,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:36,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:36,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:36,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:30:36,866 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 [2022-07-22 01:30:36,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,868 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) [2022-07-22 01:30:36,874 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 [2022-07-22 01:30:36,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:36,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:36,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:36,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:36,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:36,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:36,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:36,885 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 [2022-07-22 01:30:36,894 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:36,896 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:30:36,896 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:30:36,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:36,898 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) [2022-07-22 01:30:36,899 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 [2022-07-22 01:30:36,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:36,899 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:36,900 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:36,900 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 [] [2022-07-22 01:30:36,915 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 [2022-07-22 01:30:36,916 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:36,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:36,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:36,966 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:36,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:36,970 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 [2022-07-22 01:30:36,970 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) [2022-07-22 01:30:36,980 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. [2022-07-22 01:30:36,981 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 [2022-07-22 01:30:36,986 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) [2022-07-22 01:30:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-22 01:30:36,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-22 01:30:36,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:36,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-22 01:30:36,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:36,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-07-22 01:30:36,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:36,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-07-22 01:30:36,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:36,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-07-22 01:30:36,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-22 01:30:36,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-22 01:30:36,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-07-22 01:30:36,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:36,992 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-22 01:30:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-07-22 01:30:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 01:30:36,995 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) [2022-07-22 01:30:36,995 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 [2022-07-22 01:30:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-07-22 01:30:36,997 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-22 01:30:36,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:30:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 01:30:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 01:30:37,000 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) [2022-07-22 01:30:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:30:37,015 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-07-22 01:30:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 01:30:37,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2022-07-22 01:30:37,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:37,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 17 transitions. [2022-07-22 01:30:37,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-22 01:30:37,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-22 01:30:37,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2022-07-22 01:30:37,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:37,021 INFO L369 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-22 01:30:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2022-07-22 01:30:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-07-22 01:30:37,024 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) [2022-07-22 01:30:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-07-22 01:30:37,026 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-07-22 01:30:37,026 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-07-22 01:30:37,028 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-22 01:30:37,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2022-07-22 01:30:37,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:30:37,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:37,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:37,029 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2022-07-22 01:30:37,029 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:30:37,030 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 [2022-07-22 01:30:37,030 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 [2022-07-22 01:30:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 297591406, now seen corresponding path program 2 times [2022-07-22 01:30:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:37,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411082289] [2022-07-22 01:30:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,050 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:37,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-07-22 01:30:37,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:37,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812706308] [2022-07-22 01:30:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:37,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,070 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1777467309, now seen corresponding path program 3 times [2022-07-22 01:30:37,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:37,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771988177] [2022-07-22 01:30:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:37,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 01:30:37,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:30:37,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771988177] [2022-07-22 01:30:37,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771988177] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 01:30:37,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282044604] [2022-07-22 01:30:37,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 01:30:37,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 01:30:37,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,135 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) [2022-07-22 01:30:37,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 01:30:37,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-22 01:30:37,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 01:30:37,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 01:30:37,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 01:30:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 01:30:37,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282044604] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 01:30:37,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 01:30:37,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-07-22 01:30:37,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701616849] [2022-07-22 01:30:37,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 01:30:37,251 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:37,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:37,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:37,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:37,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:37,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:37,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:37,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2022-07-22 01:30:37,252 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:37,252 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:37,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:37,301 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:37,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,304 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) [2022-07-22 01:30:37,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:37,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,324 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 [2022-07-22 01:30:37,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:30:37,325 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: [] [2022-07-22 01:30:37,349 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 [2022-07-22 01:30:37,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,351 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) [2022-07-22 01:30:37,352 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 [2022-07-22 01:30:37,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:37,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,373 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 [2022-07-22 01:30:37,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,379 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) [2022-07-22 01:30:37,380 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 [2022-07-22 01:30:37,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:37,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:30:37,397 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] [2022-07-22 01:30:37,413 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 [2022-07-22 01:30:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,415 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) [2022-07-22 01:30:37,415 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 [2022-07-22 01:30:37,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:37,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,437 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 [2022-07-22 01:30:37,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,439 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) [2022-07-22 01:30:37,442 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 [2022-07-22 01:30:37,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:37,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,474 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:37,477 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 [2022-07-22 01:30:37,477 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:37,477 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:37,477 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:37,477 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:37,477 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:37,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:37,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:37,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2022-07-22 01:30:37,478 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:37,478 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:37,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,533 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:37,533 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,535 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) [2022-07-22 01:30:37,544 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 [2022-07-22 01:30:37,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:37,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:37,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:37,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:37,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:37,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:37,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:37,555 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 [2022-07-22 01:30:37,571 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:30:37,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-07-22 01:30:37,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,588 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) [2022-07-22 01:30:37,588 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 [2022-07-22 01:30:37,590 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 [2022-07-22 01:30:37,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:37,596 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:37,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:37,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:37,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:37,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:37,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:37,609 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:37,611 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:30:37,611 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:30:37,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,612 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) [2022-07-22 01:30:37,613 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 [2022-07-22 01:30:37,614 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:37,614 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:37,614 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:37,614 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 [] [2022-07-22 01:30:37,631 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 [2022-07-22 01:30:37,632 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:37,667 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 [2022-07-22 01:30:37,667 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) [2022-07-22 01:30:37,673 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. [2022-07-22 01:30:37,674 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 [2022-07-22 01:30:37,674 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) [2022-07-22 01:30:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-22 01:30:37,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-22 01:30:37,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:37,675 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:37,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:37,705 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 [2022-07-22 01:30:37,705 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) [2022-07-22 01:30:37,711 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. [2022-07-22 01:30:37,711 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 [2022-07-22 01:30:37,712 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) [2022-07-22 01:30:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-22 01:30:37,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-22 01:30:37,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:37,713 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:37,738 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:37,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:37,741 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 [2022-07-22 01:30:37,741 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) [2022-07-22 01:30:37,747 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. [2022-07-22 01:30:37,747 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 [2022-07-22 01:30:37,748 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) [2022-07-22 01:30:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-22 01:30:37,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-22 01:30:37,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:37,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2022-07-22 01:30:37,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:37,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2022-07-22 01:30:37,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:37,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-07-22 01:30:37,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 01:30:37,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2022-07-22 01:30:37,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-22 01:30:37,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-22 01:30:37,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2022-07-22 01:30:37,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:37,752 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-07-22 01:30:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2022-07-22 01:30:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2022-07-22 01:30:37,753 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) [2022-07-22 01:30:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-07-22 01:30:37,753 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-22 01:30:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:30:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 01:30:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 01:30:37,754 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) [2022-07-22 01:30:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:30:37,765 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-07-22 01:30:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 01:30:37,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2022-07-22 01:30:37,766 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-22 01:30:37,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 15 transitions. [2022-07-22 01:30:37,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-22 01:30:37,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-22 01:30:37,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2022-07-22 01:30:37,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:37,767 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-07-22 01:30:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2022-07-22 01:30:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-07-22 01:30:37,769 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) [2022-07-22 01:30:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-22 01:30:37,769 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-22 01:30:37,769 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-22 01:30:37,769 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-22 01:30:37,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-22 01:30:37,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-22 01:30:37,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:37,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:37,770 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:30:37,770 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-07-22 01:30:37,770 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 [2022-07-22 01:30:37,771 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 [2022-07-22 01:30:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-07-22 01:30:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:37,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056596232] [2022-07-22 01:30:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,774 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953, now seen corresponding path program 1 times [2022-07-22 01:30:37,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:37,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876284097] [2022-07-22 01:30:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,781 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:37,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash 889694155, now seen corresponding path program 4 times [2022-07-22 01:30:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:37,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687555722] [2022-07-22 01:30:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:37,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,788 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:37,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:37,837 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:37,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:37,837 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:37,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:37,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:37,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:37,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:37,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2022-07-22 01:30:37,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:37,838 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:37,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:37,884 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 [2022-07-22 01:30:37,913 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:37,913 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:37,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,915 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) [2022-07-22 01:30:37,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:37,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,930 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 [2022-07-22 01:30:37,962 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 [2022-07-22 01:30:37,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:37,964 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) [2022-07-22 01:30:37,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:37,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:37,975 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 [2022-07-22 01:30:37,992 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:38,010 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 [2022-07-22 01:30:38,011 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:38,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:38,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:38,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:38,011 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:38,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:38,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:38,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2022-07-22 01:30:38,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:38,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:38,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,061 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:38,061 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:38,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,064 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) [2022-07-22 01:30:38,072 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 [2022-07-22 01:30:38,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:38,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:38,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:38,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:38,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:38,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:38,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:38,083 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 [2022-07-22 01:30:38,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:38,101 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:30:38,101 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:30:38,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,102 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) [2022-07-22 01:30:38,105 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 [2022-07-22 01:30:38,105 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:38,105 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:38,105 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:38,105 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 [] [2022-07-22 01:30:38,122 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 [2022-07-22 01:30:38,125 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:38,167 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 [2022-07-22 01:30:38,168 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) [2022-07-22 01:30:38,173 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. [2022-07-22 01:30:38,173 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 [2022-07-22 01:30:38,174 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) [2022-07-22 01:30:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2022-07-22 01:30:38,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-22 01:30:38,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,174 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:38,219 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 [2022-07-22 01:30:38,219 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) [2022-07-22 01:30:38,238 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. [2022-07-22 01:30:38,240 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 [2022-07-22 01:30:38,241 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) [2022-07-22 01:30:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2022-07-22 01:30:38,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-22 01:30:38,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2022-07-22 01:30:38,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 8 letters. [2022-07-22 01:30:38,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2022-07-22 01:30:38,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 01:30:38,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 17 states and 22 transitions. [2022-07-22 01:30:38,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-22 01:30:38,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-22 01:30:38,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2022-07-22 01:30:38,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:38,243 INFO L369 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-07-22 01:30:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2022-07-22 01:30:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-07-22 01:30:38,244 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) [2022-07-22 01:30:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2022-07-22 01:30:38,244 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-22 01:30:38,244 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-22 01:30:38,245 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-22 01:30:38,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2022-07-22 01:30:38,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-22 01:30:38,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:38,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:38,245 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2022-07-22 01:30:38,245 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:30:38,246 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 [2022-07-22 01:30:38,246 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 [2022-07-22 01:30:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 5 times [2022-07-22 01:30:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:38,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426955389] [2022-07-22 01:30:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:38,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,252 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-07-22 01:30:38,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:38,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580222973] [2022-07-22 01:30:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,261 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 790346520, now seen corresponding path program 6 times [2022-07-22 01:30:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328764690] [2022-07-22 01:30:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,270 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:38,292 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:38,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:38,292 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:38,292 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:38,292 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:38,292 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,292 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:38,292 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:38,292 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2022-07-22 01:30:38,292 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:38,292 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:38,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,334 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:38,334 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:38,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,336 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) [2022-07-22 01:30:38,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:38,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:38,353 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 [2022-07-22 01:30:38,392 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 [2022-07-22 01:30:38,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,394 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) [2022-07-22 01:30:38,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:38,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:38,418 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 [2022-07-22 01:30:38,445 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:38,447 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 [2022-07-22 01:30:38,448 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:38,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:38,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:38,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:38,448 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:38,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:38,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:38,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2022-07-22 01:30:38,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:38,448 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:38,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,503 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 [2022-07-22 01:30:38,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:38,516 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:38,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,517 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) [2022-07-22 01:30:38,518 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 [2022-07-22 01:30:38,520 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 [2022-07-22 01:30:38,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:38,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:38,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:38,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:38,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:38,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:38,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:38,530 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:38,531 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:30:38,531 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:30:38,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,532 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) [2022-07-22 01:30:38,532 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 [2022-07-22 01:30:38,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:38,534 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:38,534 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:38,534 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 [] [2022-07-22 01:30:38,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-07-22 01:30:38,549 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,582 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:38,594 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 [2022-07-22 01:30:38,594 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) [2022-07-22 01:30:38,599 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. [2022-07-22 01:30:38,600 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 [2022-07-22 01:30:38,601 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) [2022-07-22 01:30:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-22 01:30:38,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-22 01:30:38,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,601 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,633 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:38,649 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 [2022-07-22 01:30:38,649 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) [2022-07-22 01:30:38,652 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. [2022-07-22 01:30:38,652 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 [2022-07-22 01:30:38,653 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) [2022-07-22 01:30:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-22 01:30:38,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-22 01:30:38,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,653 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:38,678 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:30:38,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:38,688 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 [2022-07-22 01:30:38,689 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) [2022-07-22 01:30:38,694 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. [2022-07-22 01:30:38,695 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 [2022-07-22 01:30:38,695 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) [2022-07-22 01:30:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-22 01:30:38,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-22 01:30:38,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2022-07-22 01:30:38,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-22 01:30:38,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:38,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2022-07-22 01:30:38,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-07-22 01:30:38,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 25 transitions. [2022-07-22 01:30:38,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-22 01:30:38,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-22 01:30:38,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2022-07-22 01:30:38,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:38,698 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-07-22 01:30:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2022-07-22 01:30:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-07-22 01:30:38,699 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) [2022-07-22 01:30:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-07-22 01:30:38,699 INFO L392 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-22 01:30:38,699 INFO L374 stractBuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-22 01:30:38,699 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-22 01:30:38,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2022-07-22 01:30:38,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-22 01:30:38,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:38,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:38,700 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2022-07-22 01:30:38,700 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2022-07-22 01:30:38,700 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 [2022-07-22 01:30:38,700 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 [2022-07-22 01:30:38,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 7 times [2022-07-22 01:30:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:38,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191538279] [2022-07-22 01:30:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,706 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:38,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2022-07-22 01:30:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:38,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349960181] [2022-07-22 01:30:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,715 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,717 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash -686205165, now seen corresponding path program 8 times [2022-07-22 01:30:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:38,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534938359] [2022-07-22 01:30:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:38,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:38,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:38,771 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:38,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:38,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:38,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:38,771 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:38,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:38,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:38,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2022-07-22 01:30:38,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:38,772 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:38,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,821 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:38,821 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:38,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,822 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) [2022-07-22 01:30:38,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:38,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:38,844 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 [2022-07-22 01:30:38,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-07-22 01:30:38,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,880 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) [2022-07-22 01:30:38,891 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 [2022-07-22 01:30:38,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:38,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:38,911 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:38,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-07-22 01:30:38,926 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:38,926 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:38,926 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:38,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:38,926 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:38,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:38,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:38,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2022-07-22 01:30:38,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:38,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:38,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:38,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:38,965 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:38,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,967 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) [2022-07-22 01:30:38,969 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 [2022-07-22 01:30:38,970 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 [2022-07-22 01:30:38,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:38,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:38,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:38,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:38,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:38,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:38,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:38,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:38,984 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:30:38,984 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:30:38,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:38,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:38,986 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) [2022-07-22 01:30:38,986 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 [2022-07-22 01:30:38,987 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:38,987 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:38,987 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:38,987 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 [] [2022-07-22 01:30:39,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-07-22 01:30:39,003 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:39,078 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 [2022-07-22 01:30:39,078 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) [2022-07-22 01:30:39,086 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 [2022-07-22 01:30:39,105 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. [2022-07-22 01:30:39,105 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 [2022-07-22 01:30:39,106 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) [2022-07-22 01:30:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-22 01:30:39,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-22 01:30:39,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,106 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,123 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 [2022-07-22 01:30:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:39,157 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 [2022-07-22 01:30:39,157 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) [2022-07-22 01:30:39,175 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. [2022-07-22 01:30:39,175 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 [2022-07-22 01:30:39,176 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) [2022-07-22 01:30:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-07-22 01:30:39,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-22 01:30:39,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,176 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:39,232 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 [2022-07-22 01:30:39,232 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) [2022-07-22 01:30:39,250 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. [2022-07-22 01:30:39,250 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 [2022-07-22 01:30:39,251 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) [2022-07-22 01:30:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2022-07-22 01:30:39,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-22 01:30:39,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 13 letters. Loop has 4 letters. [2022-07-22 01:30:39,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 8 letters. [2022-07-22 01:30:39,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 53 transitions. [2022-07-22 01:30:39,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-07-22 01:30:39,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 31 states and 40 transitions. [2022-07-22 01:30:39,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-22 01:30:39,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-22 01:30:39,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 40 transitions. [2022-07-22 01:30:39,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:39,260 INFO L369 hiAutomatonCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-07-22 01:30:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 40 transitions. [2022-07-22 01:30:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-07-22 01:30:39,266 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) [2022-07-22 01:30:39,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-07-22 01:30:39,267 INFO L392 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-07-22 01:30:39,267 INFO L374 stractBuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-07-22 01:30:39,268 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-22 01:30:39,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2022-07-22 01:30:39,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-07-22 01:30:39,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:39,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:39,274 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 3, 3, 1, 1] [2022-07-22 01:30:39,274 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1] [2022-07-22 01:30:39,275 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 [2022-07-22 01:30:39,275 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 [2022-07-22 01:30:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1981740944, now seen corresponding path program 9 times [2022-07-22 01:30:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:39,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234088115] [2022-07-22 01:30:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:39,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 01:30:39,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:30:39,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234088115] [2022-07-22 01:30:39,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234088115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:30:39,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:30:39,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 01:30:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184871204] [2022-07-22 01:30:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:30:39,328 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-22 01:30:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1298898678, now seen corresponding path program 3 times [2022-07-22 01:30:39,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:39,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83549394] [2022-07-22 01:30:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:39,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:39,340 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:39,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:39,393 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:39,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:39,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:39,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:39,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:30:39,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:39,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:39,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2022-07-22 01:30:39,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:39,394 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:39,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,445 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:39,445 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:30:39,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:39,452 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) [2022-07-22 01:30:39,454 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 [2022-07-22 01:30:39,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:39,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:39,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:30:39,470 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: [] [2022-07-22 01:30:39,485 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 [2022-07-22 01:30:39,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:39,486 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) [2022-07-22 01:30:39,487 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 [2022-07-22 01:30:39,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:30:39,488 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:39,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-07-22 01:30:39,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:39,511 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) [2022-07-22 01:30:39,513 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 [2022-07-22 01:30:39,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:30:39,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:30:39,587 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:30:39,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-07-22 01:30:39,593 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:30:39,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:30:39,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:30:39,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:30:39,594 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:30:39,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:30:39,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:30:39,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2022-07-22 01:30:39,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:30:39,594 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:30:39,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:30:39,647 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:30:39,647 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:30:39,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:39,651 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) [2022-07-22 01:30:39,652 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 [2022-07-22 01:30:39,653 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 [2022-07-22 01:30:39,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:39,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:39,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:39,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:39,660 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:30:39,660 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:30:39,675 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:30:39,697 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 [2022-07-22 01:30:39,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:39,698 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) [2022-07-22 01:30:39,707 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 [2022-07-22 01:30:39,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:30:39,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:30:39,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:30:39,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:30:39,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:30:39,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:30:39,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:30:39,718 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 [2022-07-22 01:30:39,731 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:30:39,734 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:30:39,734 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:30:39,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:30:39,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:30:39,735 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) [2022-07-22 01:30:39,743 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:30:39,743 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:30:39,743 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:30:39,744 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 [] [2022-07-22 01:30:39,751 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 [2022-07-22 01:30:39,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-07-22 01:30:39,762 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:30:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,811 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 [2022-07-22 01:30:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:39,861 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 [2022-07-22 01:30:39,861 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) [2022-07-22 01:30:39,865 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. [2022-07-22 01:30:39,865 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 [2022-07-22 01:30:39,865 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) [2022-07-22 01:30:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-22 01:30:39,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-22 01:30:39,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,866 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:39,952 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 [2022-07-22 01:30:39,953 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) [2022-07-22 01:30:39,957 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. [2022-07-22 01:30:39,957 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 [2022-07-22 01:30:39,958 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) [2022-07-22 01:30:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-22 01:30:39,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-22 01:30:39,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:39,958 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:39,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 01:30:39,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:40,039 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 [2022-07-22 01:30:40,039 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) [2022-07-22 01:30:40,051 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. [2022-07-22 01:30:40,052 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 [2022-07-22 01:30:40,052 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) [2022-07-22 01:30:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-22 01:30:40,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-22 01:30:40,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:40,053 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:40,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:40,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:40,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:40,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 01:30:40,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:40,130 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 [2022-07-22 01:30:40,130 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) [2022-07-22 01:30:40,145 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. [2022-07-22 01:30:40,146 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 [2022-07-22 01:30:40,146 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) [2022-07-22 01:30:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-22 01:30:40,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-22 01:30:40,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:40,147 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-22 01:30:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:30:40,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:40,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 01:30:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:30:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:30:40,228 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 [2022-07-22 01:30:40,229 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) [2022-07-22 01:30:40,337 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,338 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,352 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,353 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,369 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,369 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,379 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,380 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,396 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,396 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,397 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,397 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,397 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,397 WARN L278 uchiComplementFKVNwa]: big8 [2022-07-22 01:30:40,398 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 [2022-07-22 01:30:40,398 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 [2022-07-22 01:30:40,399 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) [2022-07-22 01:30:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 31 transitions. [2022-07-22 01:30:40,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 6 letters. [2022-07-22 01:30:40,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:40,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 21 letters. Loop has 6 letters. [2022-07-22 01:30:40,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:40,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 12 letters. [2022-07-22 01:30:40,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:30:40,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 719 states and 1229 transitions. [2022-07-22 01:30:40,414 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2022-07-22 01:30:40,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 719 states to 450 states and 747 transitions. [2022-07-22 01:30:40,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-07-22 01:30:40,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2022-07-22 01:30:40,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 747 transitions. [2022-07-22 01:30:40,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:40,422 INFO L369 hiAutomatonCegarLoop]: Abstraction has 450 states and 747 transitions. [2022-07-22 01:30:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 747 transitions. [2022-07-22 01:30:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 157. [2022-07-22 01:30:40,434 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) [2022-07-22 01:30:40,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 280 transitions. [2022-07-22 01:30:40,435 INFO L392 hiAutomatonCegarLoop]: Abstraction has 157 states and 280 transitions. [2022-07-22 01:30:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:30:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 01:30:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 01:30:40,435 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) [2022-07-22 01:30:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:30:40,445 INFO L93 Difference]: Finished difference Result 189 states and 305 transitions. [2022-07-22 01:30:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 01:30:40,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 305 transitions. [2022-07-22 01:30:40,448 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2022-07-22 01:30:40,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 174 states and 280 transitions. [2022-07-22 01:30:40,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2022-07-22 01:30:40,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-07-22 01:30:40,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 280 transitions. [2022-07-22 01:30:40,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:30:40,449 INFO L369 hiAutomatonCegarLoop]: Abstraction has 174 states and 280 transitions. [2022-07-22 01:30:40,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 280 transitions. [2022-07-22 01:30:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2022-07-22 01:30:40,455 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) [2022-07-22 01:30:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 253 transitions. [2022-07-22 01:30:40,456 INFO L392 hiAutomatonCegarLoop]: Abstraction has 151 states and 253 transitions. [2022-07-22 01:30:40,456 INFO L374 stractBuchiCegarLoop]: Abstraction has 151 states and 253 transitions. [2022-07-22 01:30:40,456 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-22 01:30:40,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 253 transitions. [2022-07-22 01:30:40,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2022-07-22 01:30:40,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:30:40,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:30:40,457 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2022-07-22 01:30:40,457 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 3, 3] [2022-07-22 01:30:40,457 INFO L752 eck$LassoCheckResult]: Stem: 2779#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2780#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 2838#L12-2 assume !!(main_~c~0#1 > 0); 2839#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2836#L12-2 assume !!(main_~c~0#1 > 0); 2831#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2827#L12-2 assume !!(main_~c~0#1 > 0); 2828#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2775#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2022-07-22 01:30:40,458 INFO L754 eck$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 [2022-07-22 01:30:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 10 times [2022-07-22 01:30:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:40,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979805862] [2022-07-22 01:30:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:40,462 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:30:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:30:40,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:30:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:30:40,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1074943081, now seen corresponding path program 4 times [2022-07-22 01:30:40,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:30:40,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667011084] [2022-07-22 01:30:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:30:40,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:30:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:30:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 01:30:40,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:30:40,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667011084] [2022-07-22 01:30:40,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667011084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:30:40,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:30:40,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 01:30:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649776675] [2022-07-22 01:30:40,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:30:40,483 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-22 01:30:40,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:30:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 01:30:40,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 01:30:40,483 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) [2022-07-22 01:30:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:30:40,491 INFO L93 Difference]: Finished difference Result 136 states and 207 transitions. [2022-07-22 01:30:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 01:30:40,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 207 transitions. [2022-07-22 01:30:40,492 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:30:40,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 0 states and 0 transitions. [2022-07-22 01:30:40,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 01:30:40,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 01:30:40,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 01:30:40,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 01:30:40,493 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:30:40,493 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:30:40,493 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:30:40,493 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-22 01:30:40,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 01:30:40,493 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:30:40,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 01:30:40,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:30:40 BoogieIcfgContainer [2022-07-22 01:30:40,499 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:30:40,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:30:40,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:30:40,500 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:30:40,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:30:35" (3/4) ... [2022-07-22 01:30:40,502 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 01:30:40,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:30:40,503 INFO L158 Benchmark]: Toolchain (without parser) took 5694.64ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 33.7MB in the beginning and 39.6MB in the end (delta: -5.9MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2022-07-22 01:30:40,503 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:30:40,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.28ms. Allocated memory is still 56.6MB. Free memory was 33.5MB in the beginning and 38.1MB in the end (delta: -4.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-22 01:30:40,503 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.57ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 36.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:30:40,504 INFO L158 Benchmark]: Boogie Preprocessor took 13.80ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 35.9MB in the end (delta: 880.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:30:40,504 INFO L158 Benchmark]: RCFGBuilder took 219.52ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 28.2MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 01:30:40,504 INFO L158 Benchmark]: BuchiAutomizer took 5254.28ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 28.0MB in the beginning and 39.6MB in the end (delta: -11.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2022-07-22 01:30:40,504 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 83.9MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:30:40,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 37.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.28ms. Allocated memory is still 56.6MB. Free memory was 33.5MB in the beginning and 38.1MB in the end (delta: -4.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.57ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 36.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.80ms. Allocated memory is still 56.6MB. Free memory was 36.8MB in the beginning and 35.9MB in the end (delta: 880.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 219.52ms. Allocated memory is still 56.6MB. Free memory was 35.9MB in the beginning and 28.2MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5254.28ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 28.0MB in the beginning and 39.6MB in the end (delta: -11.5MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 83.9MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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, 0.2s 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: 29ms 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! [2022-07-22 01:30:40,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 01:30:40,750 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