./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/b.15.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 d693c7724c0ebfe8b27134a216c04efa168e4ab88e5a919a5ed127ebb533f08a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:19:09,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:19:09,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:19:09,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:19:09,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:19:09,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:19:09,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:19:09,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:19:09,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:19:09,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:19:09,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:19:09,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:19:09,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:19:09,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:19:09,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:19:09,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:19:09,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:19:09,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:19:09,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:19:09,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:19:09,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:19:09,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:19:09,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:19:09,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:19:09,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:19:09,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:19:09,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:19:09,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:19:09,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:19:09,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:19:09,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:19:09,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:19:09,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:19:09,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:19:09,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:19:09,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:19:09,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:19:09,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:19:09,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:19:09,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:19:09,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:19:09,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:19:09,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:19:09,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:19:09,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:19:09,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:19:09,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:19:09,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:19:09,993 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:19:09,993 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:19:09,993 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:19:09,993 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:19:09,994 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:19:09,994 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:19:09,994 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:19:09,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:19:09,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:19:09,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:19:09,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:19:09,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:19:09,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:19:09,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:19:09,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:19:09,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:19:09,997 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:19:09,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d693c7724c0ebfe8b27134a216c04efa168e4ab88e5a919a5ed127ebb533f08a [2021-12-19 17:19:10,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:19:10,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:19:10,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:19:10,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:19:10,230 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:19:10,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.15.c [2021-12-19 17:19:10,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da88d4829/a1aec88a867b44538c82261ed56129ba/FLAG26d09018b [2021-12-19 17:19:10,637 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:19:10,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.15.c [2021-12-19 17:19:10,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da88d4829/a1aec88a867b44538c82261ed56129ba/FLAG26d09018b [2021-12-19 17:19:10,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da88d4829/a1aec88a867b44538c82261ed56129ba [2021-12-19 17:19:10,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:19:10,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:19:10,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:19:10,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:19:10,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:19:10,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6b4848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10, skipping insertion in model container [2021-12-19 17:19:10,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:19:10,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:19:10,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:19:10,796 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:19:10,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:19:10,812 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:19:10,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10 WrapperNode [2021-12-19 17:19:10,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:19:10,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:19:10,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:19:10,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:19:10,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,832 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-12-19 17:19:10,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:19:10,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:19:10,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:19:10,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:19:10,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:19:10,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:19:10,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:19:10,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:19:10,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (1/1) ... [2021-12-19 17:19:10,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:10,870 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) [2021-12-19 17:19:10,891 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 [2021-12-19 17:19:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:19:10,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:19:10,940 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:19:10,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:19:11,004 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:19:11,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:19:11,008 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 17:19:11,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:11 BoogieIcfgContainer [2021-12-19 17:19:11,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:19:11,010 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:19:11,010 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:19:11,012 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:19:11,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:11,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:19:10" (1/3) ... [2021-12-19 17:19:11,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ee23074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:19:11, skipping insertion in model container [2021-12-19 17:19:11,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:11,013 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:10" (2/3) ... [2021-12-19 17:19:11,014 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ee23074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:19:11, skipping insertion in model container [2021-12-19 17:19:11,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:11,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:11" (3/3) ... [2021-12-19 17:19:11,015 INFO L388 chiAutomizerObserver]: Analyzing ICFG b.15.c [2021-12-19 17:19:11,039 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:19:11,040 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:19:11,040 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:19:11,040 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:19:11,040 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:19:11,040 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:19:11,040 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:19:11,040 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:19:11,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) 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) [2021-12-19 17:19:11,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-19 17:19:11,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:11,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:11,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:11,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-19 17:19:11,060 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:19:11,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) 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) [2021-12-19 17:19:11,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-19 17:19:11,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:11,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:11,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:11,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-19 17:19:11,065 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~c~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~c~0#1 := 0; 8#L13-3true [2021-12-19 17:19:11,065 INFO L793 eck$LassoCheckResult]: Loop: 8#L13-3true assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > main_~z~0#1); 7#L13-2true assume !(main_~y~0#1 > main_~z~0#1); 8#L13-3true [2021-12-19 17:19:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:11,069 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:19:11,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:11,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525759582] [2021-12-19 17:19:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:11,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,115 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1320, now seen corresponding path program 1 times [2021-12-19 17:19:11,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:11,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679683239] [2021-12-19 17:19:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:11,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:11,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:11,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679683239] [2021-12-19 17:19:11,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679683239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:19:11,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:19:11,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-19 17:19:11,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168700974] [2021-12-19 17:19:11,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:19:11,183 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:11,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:11,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:19:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:19:11,205 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-12-19 17:19:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:11,216 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-12-19 17:19:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:19:11,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-12-19 17:19:11,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:19:11,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-12-19 17:19:11,222 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-19 17:19:11,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-19 17:19:11,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-12-19 17:19:11,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:11,223 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-19 17:19:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-12-19 17:19:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-12-19 17:19:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) 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) [2021-12-19 17:19:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-12-19 17:19:11,246 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-19 17:19:11,246 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-12-19 17:19:11,246 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:19:11,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-12-19 17:19:11,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:19:11,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:11,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:11,246 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:11,246 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:19:11,246 INFO L791 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 27#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~c~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~c~0#1 := 0; 30#L13-3 [2021-12-19 17:19:11,247 INFO L793 eck$LassoCheckResult]: Loop: 30#L13-3 assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > main_~z~0#1); 28#L13-2 assume !!(main_~y~0#1 > main_~z~0#1);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1; 29#L13-2 assume !(main_~y~0#1 > main_~z~0#1); 30#L13-3 [2021-12-19 17:19:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-19 17:19:11,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:11,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567652401] [2021-12-19 17:19:11,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:11,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,263 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,265 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:11,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash 41000, now seen corresponding path program 1 times [2021-12-19 17:19:11,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:11,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021683561] [2021-12-19 17:19:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:11,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,272 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2021-12-19 17:19:11,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:11,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633189814] [2021-12-19 17:19:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:11,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,295 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:11,301 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:11,377 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:11,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:11,377 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:11,377 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:11,378 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:11,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:11,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:11,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:11,378 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2021-12-19 17:19:11,378 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:11,378 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:11,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:11,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:11,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:11,478 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:11,479 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:11,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:11,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:11,481 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) [2021-12-19 17:19:11,483 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 [2021-12-19 17:19:11,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:11,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:11,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:11,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:11,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:11,517 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) [2021-12-19 17:19:11,517 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 [2021-12-19 17:19:11,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:11,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:11,821 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:11,825 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 [2021-12-19 17:19:11,825 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:11,825 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:11,825 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:11,825 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:11,825 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:11,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:11,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:11,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:11,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2021-12-19 17:19:11,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:11,826 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:11,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:11,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:11,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:11,900 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:11,902 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:11,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:11,904 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) [2021-12-19 17:19:11,906 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 [2021-12-19 17:19:11,907 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 [2021-12-19 17:19:11,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:11,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:11,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:11,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:11,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:11,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:11,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:11,943 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:11,949 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-19 17:19:11,949 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:19:11,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:11,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:11,984 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) [2021-12-19 17:19:11,985 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 [2021-12-19 17:19:11,985 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:11,985 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:11,986 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:11,986 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-19 17:19:12,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-19 17:19:12,002 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:12,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:12,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:12,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:12,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:12,090 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 [2021-12-19 17:19:12,090 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:12,117 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 18 transitions. Complement of second has 6 states. [2021-12-19 17:19:12,118 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 [2021-12-19 17:19:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-19 17:19:12,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-19 17:19:12,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:12,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-19 17:19:12,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:12,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-19 17:19:12,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:12,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-12-19 17:19:12,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:12,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 12 transitions. [2021-12-19 17:19:12,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-19 17:19:12,124 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-19 17:19:12,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-12-19 17:19:12,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:19:12,124 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-19 17:19:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-12-19 17:19:12,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-12-19 17:19:12,125 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) [2021-12-19 17:19:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-19 17:19:12,126 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:19:12,126 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:19:12,126 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:19:12,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-19 17:19:12,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:12,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:12,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:12,127 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-12-19 17:19:12,127 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:19:12,127 INFO L791 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 84#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~c~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~c~0#1 := 0; 88#L13-3 assume !!(main_~x~0#1 == main_~y~0#1 && main_~x~0#1 > main_~z~0#1); 86#L13-2 assume !!(main_~y~0#1 > main_~z~0#1);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1; 87#L13-2 assume !!(main_~y~0#1 > main_~z~0#1);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1; 85#L13-2 [2021-12-19 17:19:12,127 INFO L793 eck$LassoCheckResult]: Loop: 85#L13-2 assume !!(main_~y~0#1 > main_~z~0#1);main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_~y~0#1 - 1; 85#L13-2 [2021-12-19 17:19:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 1 times [2021-12-19 17:19:12,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:12,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62898895] [2021-12-19 17:19:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:12,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:12,139 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:12,148 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-19 17:19:12,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:12,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020882480] [2021-12-19 17:19:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:12,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:12,156 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:12,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:12,158 INFO L85 PathProgramCache]: Analyzing trace with hash 889698284, now seen corresponding path program 2 times [2021-12-19 17:19:12,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134822908] [2021-12-19 17:19:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:12,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:12,164 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:12,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:12,186 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:12,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:12,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:12,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:12,186 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:12,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:12,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:12,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration3_Loop [2021-12-19 17:19:12,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:12,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:12,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:12,231 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:12,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,232 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) [2021-12-19 17:19:12,233 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 [2021-12-19 17:19:12,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:12,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:12,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:12,257 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: [] [2021-12-19 17:19:12,273 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 [2021-12-19 17:19:12,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,275 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) [2021-12-19 17:19:12,275 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 [2021-12-19 17:19:12,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:12,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:12,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:12,287 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: [] [2021-12-19 17:19:12,301 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 [2021-12-19 17:19:12,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,303 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) [2021-12-19 17:19:12,306 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 [2021-12-19 17:19:12,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:12,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:12,352 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 [2021-12-19 17:19:12,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,353 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) [2021-12-19 17:19:12,355 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 [2021-12-19 17:19:12,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:12,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:12,406 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:12,406 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-3}, {ULTIMATE.start_main_~x~0#1=-3}, {ULTIMATE.start_main_~x~0#1=5}] Lambdas: [0, 1, 1] Nus: [1, 0] [2021-12-19 17:19:12,424 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 [2021-12-19 17:19:12,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,425 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) [2021-12-19 17:19:12,426 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 [2021-12-19 17:19:12,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:12,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:12,490 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 [2021-12-19 17:19:12,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,491 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) [2021-12-19 17:19:12,491 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 [2021-12-19 17:19:12,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:12,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:12,631 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:12,634 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 [2021-12-19 17:19:12,634 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:12,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:12,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:12,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:12,634 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:12,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,634 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:12,634 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:12,634 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration3_Loop [2021-12-19 17:19:12,634 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:12,634 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:12,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:12,695 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:12,695 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:12,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,696 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) [2021-12-19 17:19:12,698 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 [2021-12-19 17:19:12,699 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 [2021-12-19 17:19:12,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:12,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:12,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:12,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:12,708 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:12,708 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:12,725 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:12,742 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 [2021-12-19 17:19:12,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,743 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) [2021-12-19 17:19:12,783 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 [2021-12-19 17:19:12,785 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 [2021-12-19 17:19:12,785 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 [2021-12-19 17:19:12,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:12,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:12,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:12,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:12,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:12,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:12,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:12,816 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 [2021-12-19 17:19:12,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,819 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) [2021-12-19 17:19:12,819 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 [2021-12-19 17:19:12,821 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 [2021-12-19 17:19:12,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:12,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:12,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:12,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:12,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:12,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:12,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:12,838 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:12,854 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 [2021-12-19 17:19:12,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,856 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) [2021-12-19 17:19:12,857 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 [2021-12-19 17:19:12,858 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 [2021-12-19 17:19:12,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:12,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:12,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:12,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:12,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:12,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:12,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:12,875 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:12,878 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-19 17:19:12,878 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:19:12,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:12,879 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) [2021-12-19 17:19:12,880 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 [2021-12-19 17:19:12,881 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:12,881 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:12,881 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:12,881 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~y~0#1 - 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-19 17:19:12,895 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 [2021-12-19 17:19:12,896 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:12,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:12,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:12,927 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:12,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:12,927 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 [2021-12-19 17:19:12,927 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-12-19 17:19:12,933 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 16 transitions. Complement of second has 4 states. [2021-12-19 17:19:12,934 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 [2021-12-19 17:19:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-12-19 17:19:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-19 17:19:12,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-19 17:19:12,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:12,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-19 17:19:12,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:12,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-19 17:19:12,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:12,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 16 transitions. [2021-12-19 17:19:12,936 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:19:12,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2021-12-19 17:19:12,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:19:12,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:19:12,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:19:12,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:12,937 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:12,937 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:12,937 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:12,937 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:19:12,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 17:19:12,937 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:19:12,937 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 17:19:12,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:19:12 BoogieIcfgContainer [2021-12-19 17:19:12,942 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:19:12,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:19:12,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:19:12,942 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:19:12,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:11" (3/4) ... [2021-12-19 17:19:12,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 17:19:12,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:19:12,945 INFO L158 Benchmark]: Toolchain (without parser) took 2291.38ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 59.1MB in the beginning and 84.5MB in the end (delta: -25.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:12,945 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:12,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.15ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 71.2MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:19:12,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.75ms. Allocated memory is still 94.4MB. Free memory was 71.2MB in the beginning and 70.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:12,946 INFO L158 Benchmark]: Boogie Preprocessor took 11.69ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 69.1MB in the end (delta: 891.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:19:12,946 INFO L158 Benchmark]: RCFGBuilder took 164.01ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 61.1MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-19 17:19:12,947 INFO L158 Benchmark]: BuchiAutomizer took 1931.77ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 60.7MB in the beginning and 84.5MB in the end (delta: -23.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:12,947 INFO L158 Benchmark]: Witness Printer took 2.39ms. Allocated memory is still 117.4MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:12,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.15ms. Allocated memory is still 94.4MB. Free memory was 58.9MB in the beginning and 71.2MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.75ms. Allocated memory is still 94.4MB. Free memory was 71.2MB in the beginning and 70.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.69ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 69.1MB in the end (delta: 891.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 164.01ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 61.1MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1931.77ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 60.7MB in the beginning and 84.5MB in the end (delta: -23.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.39ms. Allocated memory is still 117.4MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf92 smp92 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 17:19:12,974 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 [2021-12-19 17:19:13,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE