./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:00:30,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:00:30,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:00:30,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:00:30,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:00:30,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:00:30,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:00:30,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:00:30,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:00:30,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:00:30,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:00:30,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:00:30,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:00:30,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:00:30,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:00:30,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:00:30,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:00:30,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:00:30,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:00:30,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:00:30,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:00:30,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:00:30,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:00:30,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:00:30,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:00:30,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:00:30,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:00:30,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:00:30,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:00:30,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:00:30,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:00:30,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:00:30,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:00:30,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:00:30,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:00:30,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:00:30,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:00:30,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:00:30,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:00:30,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:00:30,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:00:30,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 23:00:30,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:00:30,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:00:30,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:00:30,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:00:30,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:00:30,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:00:30,698 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:00:30,698 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:00:30,699 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:00:30,699 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:00:30,699 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:00:30,700 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:00:30,700 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:00:30,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:00:30,700 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:00:30,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:00:30,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:00:30,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:00:30,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:00:30,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:00:30,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:00:30,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:00:30,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:00:30,703 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:00:30,703 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c [2021-12-14 23:00:30,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:00:30,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:00:30,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:00:30,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:00:30,960 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:00:30,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2021-12-14 23:00:31,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4c67b8e/46cee261fb0044108e35689087f19087/FLAG484d3a2e0 [2021-12-14 23:00:31,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:00:31,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2021-12-14 23:00:31,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4c67b8e/46cee261fb0044108e35689087f19087/FLAG484d3a2e0 [2021-12-14 23:00:31,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a4c67b8e/46cee261fb0044108e35689087f19087 [2021-12-14 23:00:31,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:00:31,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:00:31,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:00:31,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:00:31,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:00:31,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5411ad5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31, skipping insertion in model container [2021-12-14 23:00:31,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:00:31,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:00:31,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:00:31,659 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:00:31,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:00:31,682 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:00:31,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31 WrapperNode [2021-12-14 23:00:31,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:00:31,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:00:31,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:00:31,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:00:31,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,708 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2021-12-14 23:00:31,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:00:31,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:00:31,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:00:31,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:00:31,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:00:31,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:00:31,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:00:31,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:00:31,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (1/1) ... [2021-12-14 23:00:31,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:31,756 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) [2021-12-14 23:00:31,778 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 [2021-12-14 23:00:31,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:00:31,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:00:31,848 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:00:31,850 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:00:31,928 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:00:31,934 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:00:31,935 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:00:31,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:00:31 BoogieIcfgContainer [2021-12-14 23:00:31,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:00:31,939 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:00:31,939 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:00:31,942 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:00:31,943 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:00:31,943 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:00:31" (1/3) ... [2021-12-14 23:00:31,944 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34da90a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:00:31, skipping insertion in model container [2021-12-14 23:00:31,944 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:00:31,945 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:00:31" (2/3) ... [2021-12-14 23:00:31,945 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34da90a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:00:31, skipping insertion in model container [2021-12-14 23:00:31,945 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:00:31,945 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:00:31" (3/3) ... [2021-12-14 23:00:31,947 INFO L388 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2021-12-14 23:00:31,993 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:00:31,994 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:00:31,994 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:00:31,994 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:00:31,994 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:00:31,994 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:00:31,995 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:00:31,995 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:00:32,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:32,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:32,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:32,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:32,033 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:00:32,033 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:00:32,033 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:00:32,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:32,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:32,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:32,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:32,036 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:00:32,036 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:00:32,041 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 3#L12-2true [2021-12-14 23:00:32,042 INFO L793 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0#1 > 0); 9#L12true assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 3#L12-2true [2021-12-14 23:00:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,049 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:00:32,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172314483] [2021-12-14 23:00:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,122 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2021-12-14 23:00:32,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636019999] [2021-12-14 23:00:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,172 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,184 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-12-14 23:00:32,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783975829] [2021-12-14 23:00:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,306 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:32,306 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:32,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:32,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:32,307 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:32,307 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,307 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:32,307 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:32,307 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2021-12-14 23:00:32,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:32,308 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:32,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,397 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:32,398 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:32,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,436 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) [2021-12-14 23:00:32,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:32,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:32,450 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 [2021-12-14 23:00:32,493 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 [2021-12-14 23:00:32,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,496 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) [2021-12-14 23:00:32,497 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 [2021-12-14 23:00:32,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:32,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:32,541 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:32,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-14 23:00:32,544 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:32,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:32,544 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:32,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:32,545 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:32,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:32,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:32,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2021-12-14 23:00:32,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:32,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:32,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:32,630 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:32,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,632 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) [2021-12-14 23:00:32,637 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 [2021-12-14 23:00:32,638 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 [2021-12-14 23:00:32,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:32,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:32,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:32,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:32,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:32,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:32,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:32,662 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:32,667 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:32,668 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:32,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,679 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) [2021-12-14 23:00:32,684 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:32,684 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:32,685 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:32,685 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2021-12-14 23:00:32,686 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 [2021-12-14 23:00:32,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:32,703 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:32,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:32,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:32,760 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:32,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:32,799 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 [2021-12-14 23:00:32,800 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:32,827 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 6 states. [2021-12-14 23:00:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-12-14 23:00:32,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-14 23:00:32,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:32,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-14 23:00:32,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:32,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-14 23:00:32,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:32,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-12-14 23:00:32,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:32,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-12-14 23:00:32,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-14 23:00:32,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-14 23:00:32,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-12-14 23:00:32,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:32,842 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-14 23:00:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-12-14 23:00:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-14 23:00:32,857 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) [2021-12-14 23:00:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-14 23:00:32,858 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-14 23:00:32,858 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-14 23:00:32,858 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:00:32,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-14 23:00:32,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:32,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:32,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:32,859 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 23:00:32,859 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:00:32,860 INFO L791 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 75#L12-2 assume !!(main_~c~0#1 > 0); 72#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 68#L12-2 [2021-12-14 23:00:32,860 INFO L793 eck$LassoCheckResult]: Loop: 68#L12-2 assume !!(main_~c~0#1 > 0); 69#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 68#L12-2 [2021-12-14 23:00:32,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,861 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-14 23:00:32,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687421849] [2021-12-14 23:00:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,866 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,870 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2021-12-14 23:00:32,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235330845] [2021-12-14 23:00:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,874 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:32,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2021-12-14 23:00:32,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:32,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653770040] [2021-12-14 23:00:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:32,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:32,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:00:32,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653770040] [2021-12-14 23:00:32,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653770040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:00:32,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:00:32,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 23:00:32,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006414697] [2021-12-14 23:00:32,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:00:32,940 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:32,941 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:32,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:32,941 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:32,941 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:32,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:32,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:32,942 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2021-12-14 23:00:32,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:32,942 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:32,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:32,994 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:32,994 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:32,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:32,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:32,996 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) [2021-12-14 23:00:33,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:33,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:33,022 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 [2021-12-14 23:00:33,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:33,024 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: [] [2021-12-14 23:00:33,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-14 23:00:33,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,042 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) [2021-12-14 23:00:33,042 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 [2021-12-14 23:00:33,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:33,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:33,092 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:33,092 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: [] [2021-12-14 23:00:33,109 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 [2021-12-14 23:00:33,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,110 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) [2021-12-14 23:00:33,111 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 [2021-12-14 23:00:33,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:33,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:33,141 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 [2021-12-14 23:00:33,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,142 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) [2021-12-14 23:00:33,144 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 [2021-12-14 23:00:33,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:33,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:33,161 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:33,161 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=1} Honda state: {ULTIMATE.start_main_~c~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=1}, {ULTIMATE.start_main_~c~0#1=0}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2021-12-14 23:00:33,178 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 [2021-12-14 23:00:33,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,179 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) [2021-12-14 23:00:33,189 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 [2021-12-14 23:00:33,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:33,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:33,241 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 [2021-12-14 23:00:33,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,243 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) [2021-12-14 23:00:33,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:33,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:33,252 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 [2021-12-14 23:00:33,282 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:33,286 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 [2021-12-14 23:00:33,287 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:33,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:33,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:33,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:33,287 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:33,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,287 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:33,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:33,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2021-12-14 23:00:33,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:33,287 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:33,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:33,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:33,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:33,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:33,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:33,368 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:33,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,372 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) [2021-12-14 23:00:33,379 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 [2021-12-14 23:00:33,380 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 [2021-12-14 23:00:33,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:33,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:33,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:33,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:33,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:00:33,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:00:33,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:00:33,415 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 [2021-12-14 23:00:33,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,417 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) [2021-12-14 23:00:33,417 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 [2021-12-14 23:00:33,419 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 [2021-12-14 23:00:33,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:33,425 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:33,425 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:33,425 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:33,430 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:00:33,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:00:33,442 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:00:33,458 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 [2021-12-14 23:00:33,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,459 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) [2021-12-14 23:00:33,460 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 [2021-12-14 23:00:33,469 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 [2021-12-14 23:00:33,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:33,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:33,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:33,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:33,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:33,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:33,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:33,481 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:00:33,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-14 23:00:33,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,498 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) [2021-12-14 23:00:33,498 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 [2021-12-14 23:00:33,499 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 [2021-12-14 23:00:33,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:33,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:33,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:33,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:33,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:33,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:33,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:33,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:33,518 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:33,518 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:33,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,524 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) [2021-12-14 23:00:33,525 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 [2021-12-14 23:00:33,588 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:33,588 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:33,588 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:33,589 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2021-12-14 23:00:33,604 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 [2021-12-14 23:00:33,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:33,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:33,684 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:33,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:33,691 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 [2021-12-14 23:00:33,691 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:33,707 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2021-12-14 23:00:33,707 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 [2021-12-14 23:00:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-14 23:00:33,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-14 23:00:33,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:33,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-14 23:00:33,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:33,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-12-14 23:00:33,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:33,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2021-12-14 23:00:33,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:33,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2021-12-14 23:00:33,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-14 23:00:33,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 23:00:33,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-12-14 23:00:33,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:33,711 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-14 23:00:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-12-14 23:00:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-14 23:00:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-12-14 23:00:33,712 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-14 23:00:33,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:00:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 23:00:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 23:00:33,715 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:33,735 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 [2021-12-14 23:00:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:00:33,752 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-12-14 23:00:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 23:00:33,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2021-12-14 23:00:33,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:33,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 17 transitions. [2021-12-14 23:00:33,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-14 23:00:33,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 23:00:33,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-12-14 23:00:33,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:33,755 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-14 23:00:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-12-14 23:00:33,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-12-14 23:00:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-14 23:00:33,756 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-14 23:00:33,757 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-14 23:00:33,757 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:00:33,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-14 23:00:33,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-14 23:00:33,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:33,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:33,758 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2021-12-14 23:00:33,758 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:00:33,758 INFO L791 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 161#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 155#L12-2 assume !!(main_~c~0#1 > 0); 156#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 166#L12-2 assume !!(main_~c~0#1 > 0); 162#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 163#L12-2 assume !!(main_~c~0#1 > 0); 158#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 165#L12-2 [2021-12-14 23:00:33,758 INFO L793 eck$LassoCheckResult]: Loop: 165#L12-2 assume !!(main_~c~0#1 > 0); 164#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 165#L12-2 [2021-12-14 23:00:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:33,758 INFO L85 PathProgramCache]: Analyzing trace with hash 297591406, now seen corresponding path program 2 times [2021-12-14 23:00:33,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:33,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423510289] [2021-12-14 23:00:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:33,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:33,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-14 23:00:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:33,785 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:33,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:33,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2021-12-14 23:00:33,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:33,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119109159] [2021-12-14 23:00:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:33,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:33,801 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:33,806 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1777467309, now seen corresponding path program 3 times [2021-12-14 23:00:33,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:33,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040966101] [2021-12-14 23:00:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:33,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:33,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 23:00:33,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:00:33,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040966101] [2021-12-14 23:00:33,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040966101] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:00:33,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592797574] [2021-12-14 23:00:33,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 23:00:33,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:00:33,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:33,860 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:00:33,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-14 23:00:33,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-14 23:00:33,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 23:00:33,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 23:00:33,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 23:00:33,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:00:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 23:00:34,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592797574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:00:34,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:00:34,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-14 23:00:34,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850028804] [2021-12-14 23:00:34,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:00:34,036 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:34,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:34,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:34,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:34,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:34,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:34,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:34,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2021-12-14 23:00:34,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:34,037 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:34,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,083 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:34,083 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:34,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,084 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-14 23:00:34,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:34,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,129 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:34,129 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:00:34,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,156 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-14 23:00:34,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:34,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,188 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-14 23:00:34,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:34,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:34,215 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=1} Honda state: {ULTIMATE.start_main_~c~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=1}, {ULTIMATE.start_main_~c~0#1=0}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2021-12-14 23:00:34,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,242 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:34,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-14 23:00:34,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,292 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-14 23:00:34,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:34,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,323 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:34,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-14 23:00:34,327 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:34,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:34,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:34,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:34,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:34,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,328 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:34,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:34,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2021-12-14 23:00:34,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:34,328 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:34,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,388 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:34,389 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:34,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,392 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,400 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 [2021-12-14 23:00:34,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:34,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:34,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:34,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:34,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:34,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:34,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:34,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-14 23:00:34,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:00:34,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,446 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-14 23:00:34,452 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 [2021-12-14 23:00:34,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:34,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:34,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:34,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:34,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:34,460 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:34,460 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:34,471 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:34,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:34,473 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:34,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,484 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-14 23:00:34,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:34,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:34,497 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:34,497 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2021-12-14 23:00:34,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,531 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,583 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:34,591 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 [2021-12-14 23:00:34,592 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,598 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 20 transitions. Complement of second has 5 states. [2021-12-14 23:00:34,598 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 [2021-12-14 23:00:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-14 23:00:34,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-14 23:00:34,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,599 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:34,649 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-14 23:00:34,650 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,655 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 20 transitions. Complement of second has 5 states. [2021-12-14 23:00:34,656 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 [2021-12-14 23:00:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-14 23:00:34,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-14 23:00:34,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,657 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:34,687 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:34,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:34,694 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-14 23:00:34,695 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,729 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 4 states. [2021-12-14 23:00:34,730 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 [2021-12-14 23:00:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-14 23:00:34,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-14 23:00:34,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-14 23:00:34,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-14 23:00:34,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:34,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2021-12-14 23:00:34,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-14 23:00:34,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2021-12-14 23:00:34,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-14 23:00:34,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 23:00:34,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-12-14 23:00:34,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:34,736 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-14 23:00:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-12-14 23:00:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2021-12-14 23:00:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-12-14 23:00:34,737 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-14 23:00:34,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:00:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:00:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:00:34,738 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:00:34,749 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-12-14 23:00:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 23:00:34,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2021-12-14 23:00:34,751 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-14 23:00:34,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 15 transitions. [2021-12-14 23:00:34,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-14 23:00:34,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-14 23:00:34,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-12-14 23:00:34,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:34,751 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-14 23:00:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-12-14 23:00:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-12-14 23:00:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-14 23:00:34,752 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-14 23:00:34,753 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-14 23:00:34,753 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:00:34,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-12-14 23:00:34,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-14 23:00:34,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:34,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:34,753 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:00:34,753 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-12-14 23:00:34,754 INFO L791 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 414#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 408#L12-2 [2021-12-14 23:00:34,754 INFO L793 eck$LassoCheckResult]: Loop: 408#L12-2 assume !!(main_~c~0#1 > 0); 409#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 417#L12-2 assume !!(main_~c~0#1 > 0); 415#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 408#L12-2 [2021-12-14 23:00:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,754 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-14 23:00:34,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:34,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106744809] [2021-12-14 23:00:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:34,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:34,757 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:34,758 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953, now seen corresponding path program 1 times [2021-12-14 23:00:34,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:34,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203932086] [2021-12-14 23:00:34,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:34,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:34,763 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:34,766 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:34,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 889694155, now seen corresponding path program 4 times [2021-12-14 23:00:34,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:34,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401320341] [2021-12-14 23:00:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:34,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:34,773 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:34,777 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:34,819 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:34,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:34,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:34,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:34,820 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:34,820 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,820 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:34,820 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:34,820 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2021-12-14 23:00:34,820 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:34,820 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:34,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,886 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:34,886 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:34,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,887 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-14 23:00:34,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:34,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-14 23:00:34,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:34,913 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:34,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-14 23:00:34,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:34,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:34,923 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:34,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:34,939 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:34,939 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:34,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:34,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:34,939 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:34,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:34,939 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:34,939 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:34,939 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2021-12-14 23:00:34,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:34,939 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:34,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:34,999 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:35,000 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:35,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,001 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:00:35,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:35,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:35,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:35,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:35,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:35,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:35,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:35,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-14 23:00:35,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:35,040 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:35,040 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:35,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,041 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-14 23:00:35,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:35,044 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:35,044 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:35,044 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 201 Supporting invariants [] [2021-12-14 23:00:35,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,072 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:35,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:35,137 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:00:35,137 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,143 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 27 transitions. Complement of second has 5 states. [2021-12-14 23:00:35,143 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 [2021-12-14 23:00:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-12-14 23:00:35,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-14 23:00:35,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,144 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:35,198 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:00:35,199 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,214 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 33 transitions. Complement of second has 7 states. [2021-12-14 23:00:35,215 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 [2021-12-14 23:00:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2021-12-14 23:00:35,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-14 23:00:35,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-14 23:00:35,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-14 23:00:35,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2021-12-14 23:00:35,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-14 23:00:35,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 17 states and 22 transitions. [2021-12-14 23:00:35,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-14 23:00:35,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-14 23:00:35,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2021-12-14 23:00:35,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:35,218 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-12-14 23:00:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2021-12-14 23:00:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-14 23:00:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-12-14 23:00:35,219 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-12-14 23:00:35,219 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-12-14 23:00:35,219 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:00:35,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2021-12-14 23:00:35,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-14 23:00:35,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:35,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:35,220 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2021-12-14 23:00:35,220 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-14 23:00:35,220 INFO L791 eck$LassoCheckResult]: Stem: 533#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 534#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 530#L12-2 assume !!(main_~c~0#1 > 0); 531#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 537#L12-2 assume !!(main_~c~0#1 > 0); 539#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 543#L12-2 assume !!(main_~c~0#1 > 0); 542#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 538#L12-2 assume !!(main_~c~0#1 > 0); 535#L12 [2021-12-14 23:00:35,220 INFO L793 eck$LassoCheckResult]: Loop: 535#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 536#L12-2 assume !!(main_~c~0#1 > 0); 535#L12 [2021-12-14 23:00:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 5 times [2021-12-14 23:00:35,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:35,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187851609] [2021-12-14 23:00:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:35,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,226 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:35,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2021-12-14 23:00:35,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:35,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108666738] [2021-12-14 23:00:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:35,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,234 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 790346520, now seen corresponding path program 6 times [2021-12-14 23:00:35,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:35,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102158083] [2021-12-14 23:00:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:35,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:35,266 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:35,266 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:35,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:35,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:35,267 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:35,267 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,267 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:35,267 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:35,267 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2021-12-14 23:00:35,267 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:35,267 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:35,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,316 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:35,316 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:35,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,317 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:35,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:35,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-14 23:00:35,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,368 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:35,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:35,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-14 23:00:35,419 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:35,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,426 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:35,426 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:35,426 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:35,426 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:35,426 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:35,426 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,426 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:35,426 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:35,426 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2021-12-14 23:00:35,426 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:35,426 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:35,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,477 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:35,477 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:35,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,478 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,489 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 [2021-12-14 23:00:35,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:35,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:35,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:35,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:35,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:35,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:35,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:35,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-14 23:00:35,515 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:35,518 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 23:00:35,518 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:35,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,520 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,522 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:35,522 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:35,522 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:35,522 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-14 23:00:35,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-14 23:00:35,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,546 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,587 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:35,602 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:00:35,602 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,606 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 21 transitions. Complement of second has 3 states. [2021-12-14 23:00:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-14 23:00:35,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-14 23:00:35,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,607 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:35,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:35,676 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:00:35,677 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,680 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 21 transitions. Complement of second has 3 states. [2021-12-14 23:00:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-14 23:00:35,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-14 23:00:35,681 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,681 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:35,717 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:00:35,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:35,729 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-14 23:00:35,730 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,744 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 30 transitions. Complement of second has 4 states. [2021-12-14 23:00:35,745 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 [2021-12-14 23:00:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-14 23:00:35,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-14 23:00:35,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2021-12-14 23:00:35,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 23:00:35,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:35,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2021-12-14 23:00:35,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 23:00:35,755 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 25 transitions. [2021-12-14 23:00:35,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-14 23:00:35,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-14 23:00:35,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2021-12-14 23:00:35,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:35,755 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-12-14 23:00:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2021-12-14 23:00:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-12-14 23:00:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-12-14 23:00:35,757 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-12-14 23:00:35,757 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-12-14 23:00:35,757 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 23:00:35,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2021-12-14 23:00:35,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:00:35,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:35,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:35,758 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2021-12-14 23:00:35,758 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-12-14 23:00:35,758 INFO L791 eck$LassoCheckResult]: Stem: 730#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 731#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 727#L12-2 assume !!(main_~c~0#1 > 0); 728#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 742#L12-2 assume !!(main_~c~0#1 > 0); 736#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 740#L12-2 assume !!(main_~c~0#1 > 0); 739#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 735#L12-2 assume !!(main_~c~0#1 > 0); 732#L12 [2021-12-14 23:00:35,758 INFO L793 eck$LassoCheckResult]: Loop: 732#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 733#L12-2 assume !!(main_~c~0#1 > 0); 737#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 738#L12-2 assume !!(main_~c~0#1 > 0); 732#L12 [2021-12-14 23:00:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 7 times [2021-12-14 23:00:35,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:35,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593636450] [2021-12-14 23:00:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:35,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,770 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,775 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2021-12-14 23:00:35,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:35,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638473182] [2021-12-14 23:00:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:35,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,779 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash -686205165, now seen corresponding path program 8 times [2021-12-14 23:00:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:35,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307068304] [2021-12-14 23:00:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:35,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,803 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:35,823 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:35,855 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:35,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:35,856 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:35,856 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:35,856 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:35,856 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,856 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:35,856 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:35,856 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2021-12-14 23:00:35,856 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:35,856 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:35,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:35,903 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:35,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,905 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-14 23:00:35,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:35,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:35,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-14 23:00:35,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:35,930 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:35,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-14 23:00:35,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:35,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:35,940 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:35,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:35,955 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:35,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:35,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:35,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:35,956 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:35,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:35,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:35,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:35,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2021-12-14 23:00:35,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:35,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:35,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:35,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,012 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:36,012 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:36,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,013 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,020 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 [2021-12-14 23:00:36,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-14 23:00:36,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:36,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:36,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:36,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:36,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:36,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:36,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:36,031 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:36,032 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:36,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:00:36,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,034 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-14 23:00:36,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:36,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:36,036 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:36,036 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 221 Supporting invariants [] [2021-12-14 23:00:36,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-14 23:00:36,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:36,126 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 [2021-12-14 23:00:36,126 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,142 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 33 transitions. Complement of second has 7 states. [2021-12-14 23:00:36,143 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 [2021-12-14 23:00:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-14 23:00:36,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 23:00:36,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,144 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:36,200 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:00:36,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,221 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 33 transitions. Complement of second has 7 states. [2021-12-14 23:00:36,221 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 [2021-12-14 23:00:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-12-14 23:00:36,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 23:00:36,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,223 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:36,284 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 23:00:36,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,303 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42 states and 53 transitions. Complement of second has 8 states. [2021-12-14 23:00:36,303 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 [2021-12-14 23:00:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-14 23:00:36,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 23:00:36,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-14 23:00:36,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-14 23:00:36,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 53 transitions. [2021-12-14 23:00:36,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-12-14 23:00:36,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 31 states and 40 transitions. [2021-12-14 23:00:36,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-14 23:00:36,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-14 23:00:36,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 40 transitions. [2021-12-14 23:00:36,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:36,312 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-14 23:00:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 40 transitions. [2021-12-14 23:00:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-12-14 23:00:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-12-14 23:00:36,320 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-12-14 23:00:36,320 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-12-14 23:00:36,320 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 23:00:36,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2021-12-14 23:00:36,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-14 23:00:36,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:36,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:36,328 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 3, 3, 1, 1] [2021-12-14 23:00:36,328 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2021-12-14 23:00:36,328 INFO L791 eck$LassoCheckResult]: Stem: 1005#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1006#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 1007#L12-2 assume !!(main_~c~0#1 > 0); 1016#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1017#L12-2 assume !!(main_~c~0#1 > 0); 1014#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1012#L12-2 assume !!(main_~c~0#1 > 0); 1011#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1001#L12-2 assume !!(main_~c~0#1 > 0); 1002#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1009#L12-2 assume !!(main_~c~0#1 > 0); 1024#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1023#L12-2 assume !!(main_~c~0#1 > 0); 1021#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1020#L12-2 assume !!(main_~c~0#1 > 0); 1008#L12 [2021-12-14 23:00:36,328 INFO L793 eck$LassoCheckResult]: Loop: 1008#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1009#L12-2 assume !!(main_~c~0#1 > 0); 1024#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1023#L12-2 assume !!(main_~c~0#1 > 0); 1021#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1020#L12-2 assume !!(main_~c~0#1 > 0); 1008#L12 [2021-12-14 23:00:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1981740944, now seen corresponding path program 9 times [2021-12-14 23:00:36,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:36,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121649184] [2021-12-14 23:00:36,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:36,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 23:00:36,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:00:36,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121649184] [2021-12-14 23:00:36,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121649184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:00:36,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:00:36,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:00:36,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635120126] [2021-12-14 23:00:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:00:36,374 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:00:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1298898678, now seen corresponding path program 3 times [2021-12-14 23:00:36,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405205447] [2021-12-14 23:00:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:36,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:36,379 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:36,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:36,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:36,447 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:36,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:36,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:36,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:36,448 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:00:36,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:36,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:36,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2021-12-14 23:00:36,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:36,448 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:36,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,509 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:36,509 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:00:36,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,511 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-14 23:00:36,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:36,514 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:36,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:00:36,536 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:00:36,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-14 23:00:36,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,556 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-14 23:00:36,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:00:36,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:36,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-14 23:00:36,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,580 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-14 23:00:36,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:00:36,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:00:36,626 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:00:36,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-14 23:00:36,629 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:00:36,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:00:36,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:00:36,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:00:36,629 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:00:36,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:00:36,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:00:36,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2021-12-14 23:00:36,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:00:36,630 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:00:36,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:00:36,681 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:00:36,682 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:00:36,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,683 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-14 23:00:36,685 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 [2021-12-14 23:00:36,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:36,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:36,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:36,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:36,692 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:00:36,692 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:00:36,697 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:00:36,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:36,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,713 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-14 23:00:36,715 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 [2021-12-14 23:00:36,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:00:36,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:00:36,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:00:36,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:00:36,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:00:36,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:00:36,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:00:36,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:00:36,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:00:36,758 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:00:36,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:00:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:00:36,759 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:00:36,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-14 23:00:36,761 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:00:36,761 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:00:36,761 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:00:36,761 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = 1*ULTIMATE.start_main_~c~0#1 Supporting invariants [] [2021-12-14 23:00:36,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:36,776 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:00:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:36,873 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-14 23:00:36,873 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,878 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 36 transitions. Complement of second has 3 states. [2021-12-14 23:00:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-14 23:00:36,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-14 23:00:36,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,885 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:36,971 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-14 23:00:36,971 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 36 transitions. Complement of second has 3 states. [2021-12-14 23:00:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-14 23:00:36,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-14 23:00:36,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:36,976 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:36,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:36,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:36,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:37,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 23:00:37,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:37,074 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-14 23:00:37,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,087 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 61 transitions. Complement of second has 4 states. [2021-12-14 23:00:37,088 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 [2021-12-14 23:00:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-14 23:00:37,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-14 23:00:37,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:37,089 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:37,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:37,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:37,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 23:00:37,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:37,184 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-14 23:00:37,184 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,204 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 43 states and 61 transitions. Complement of second has 4 states. [2021-12-14 23:00:37,205 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 [2021-12-14 23:00:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-14 23:00:37,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-14 23:00:37,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:37,206 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:00:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:37,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:00:37,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:37,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 23:00:37,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:00:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:00:37,320 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-14 23:00:37,321 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:37,430 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,430 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,436 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,436 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,444 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,444 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,450 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,451 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,466 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,466 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,467 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,467 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,467 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,468 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-14 23:00:37,468 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 719 states and 1229 transitions. Complement of second has 174 states 11 powerset states163 rank states. The highest rank that occured is 7 [2021-12-14 23:00:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-12-14 23:00:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 31 transitions. [2021-12-14 23:00:37,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-14 23:00:37,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:37,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 21 letters. Loop has 6 letters. [2021-12-14 23:00:37,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:37,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 12 letters. [2021-12-14 23:00:37,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:00:37,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 719 states and 1229 transitions. [2021-12-14 23:00:37,481 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2021-12-14 23:00:37,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 719 states to 450 states and 747 transitions. [2021-12-14 23:00:37,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-14 23:00:37,486 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2021-12-14 23:00:37,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 747 transitions. [2021-12-14 23:00:37,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:37,486 INFO L681 BuchiCegarLoop]: Abstraction has 450 states and 747 transitions. [2021-12-14 23:00:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 747 transitions. [2021-12-14 23:00:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 157. [2021-12-14 23:00:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 157 states have (on average 1.78343949044586) internal successors, (280), 156 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 280 transitions. [2021-12-14 23:00:37,501 INFO L704 BuchiCegarLoop]: Abstraction has 157 states and 280 transitions. [2021-12-14 23:00:37,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:00:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 23:00:37,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 23:00:37,502 INFO L87 Difference]: Start difference. First operand 157 states and 280 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:00:37,512 INFO L93 Difference]: Finished difference Result 189 states and 305 transitions. [2021-12-14 23:00:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 23:00:37,513 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 305 transitions. [2021-12-14 23:00:37,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-12-14 23:00:37,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 174 states and 280 transitions. [2021-12-14 23:00:37,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-12-14 23:00:37,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-14 23:00:37,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 280 transitions. [2021-12-14 23:00:37,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:00:37,517 INFO L681 BuchiCegarLoop]: Abstraction has 174 states and 280 transitions. [2021-12-14 23:00:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 280 transitions. [2021-12-14 23:00:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2021-12-14 23:00:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 151 states have (on average 1.6754966887417218) internal successors, (253), 150 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 253 transitions. [2021-12-14 23:00:37,524 INFO L704 BuchiCegarLoop]: Abstraction has 151 states and 253 transitions. [2021-12-14 23:00:37,525 INFO L587 BuchiCegarLoop]: Abstraction has 151 states and 253 transitions. [2021-12-14 23:00:37,525 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 23:00:37,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 253 transitions. [2021-12-14 23:00:37,526 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-12-14 23:00:37,526 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:00:37,526 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:00:37,526 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2021-12-14 23:00:37,527 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 3, 3] [2021-12-14 23:00:37,527 INFO L791 eck$LassoCheckResult]: Stem: 2779#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2780#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 2838#L12-2 assume !!(main_~c~0#1 > 0); 2839#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2836#L12-2 assume !!(main_~c~0#1 > 0); 2831#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2827#L12-2 assume !!(main_~c~0#1 > 0); 2828#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2775#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2021-12-14 23:00:37,527 INFO L793 eck$LassoCheckResult]: Loop: 2776#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2858#L12-2 assume !!(main_~c~0#1 > 0); 2857#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2855#L12-2 assume !!(main_~c~0#1 > 0); 2808#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2862#L12-2 assume !!(main_~c~0#1 > 0); 2805#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2791#L12-2 assume !!(main_~c~0#1 > 0); 2860#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2800#L12-2 assume !!(main_~c~0#1 > 0); 2811#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2789#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2021-12-14 23:00:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 10 times [2021-12-14 23:00:37,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:37,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356033343] [2021-12-14 23:00:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:37,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:37,532 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:00:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:00:37,535 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:00:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:00:37,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1074943081, now seen corresponding path program 4 times [2021-12-14 23:00:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:00:37,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441295387] [2021-12-14 23:00:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:00:37,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:00:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:00:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-14 23:00:37,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:00:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441295387] [2021-12-14 23:00:37,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441295387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:00:37,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:00:37,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:00:37,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132330315] [2021-12-14 23:00:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:00:37,553 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:00:37,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:00:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 23:00:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 23:00:37,553 INFO L87 Difference]: Start difference. First operand 151 states and 253 transitions. cyclomatic complexity: 115 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:00:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:00:37,561 INFO L93 Difference]: Finished difference Result 136 states and 207 transitions. [2021-12-14 23:00:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 23:00:37,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 207 transitions. [2021-12-14 23:00:37,563 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:00:37,563 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 0 states and 0 transitions. [2021-12-14 23:00:37,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 23:00:37,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 23:00:37,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 23:00:37,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:00:37,563 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:00:37,563 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:00:37,563 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:00:37,563 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 23:00:37,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 23:00:37,564 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:00:37,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 23:00:37,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:00:37 BoogieIcfgContainer [2021-12-14 23:00:37,569 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:00:37,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:00:37,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:00:37,570 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:00:37,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:00:31" (3/4) ... [2021-12-14 23:00:37,572 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 23:00:37,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:00:37,573 INFO L158 Benchmark]: Toolchain (without parser) took 6085.48ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 59.7MB in the beginning and 55.7MB in the end (delta: 4.1MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-12-14 23:00:37,573 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 88.1MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:37,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.62ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 59.5MB in the beginning and 89.4MB in the end (delta: -29.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:00:37,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.66ms. Allocated memory is still 111.1MB. Free memory was 89.4MB in the beginning and 88.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:37,574 INFO L158 Benchmark]: Boogie Preprocessor took 14.33ms. Allocated memory is still 111.1MB. Free memory was 88.2MB in the beginning and 87.3MB in the end (delta: 899.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:00:37,574 INFO L158 Benchmark]: RCFGBuilder took 211.94ms. Allocated memory is still 111.1MB. Free memory was 87.3MB in the beginning and 79.4MB in the end (delta: 7.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:00:37,575 INFO L158 Benchmark]: BuchiAutomizer took 5630.09ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 55.7MB in the end (delta: 23.7MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2021-12-14 23:00:37,575 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 111.1MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:00:37,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 88.1MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 41.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.62ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 59.5MB in the beginning and 89.4MB in the end (delta: -29.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.66ms. Allocated memory is still 111.1MB. Free memory was 89.4MB in the beginning and 88.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.33ms. Allocated memory is still 111.1MB. Free memory was 88.2MB in the beginning and 87.3MB in the end (delta: 899.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 211.94ms. Allocated memory is still 111.1MB. Free memory was 87.3MB in the beginning and 79.4MB in the end (delta: 7.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 5630.09ms. Allocated memory is still 111.1MB. Free memory was 79.4MB in the beginning and 55.7MB in the end (delta: 23.7MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 111.1MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (4 trivial, 3 deterministic, 4 nondeterministic). One deterministic module has affine ranking function 211 + -2 * x and consists of 4 locations. One deterministic module has affine ranking function 211 + -2 * x and consists of 3 locations. One deterministic module has affine ranking function 201 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 211 + -2 * x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function 221 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function c and consists of 8 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.5s and 9 iterations. TraceHistogramMax:7. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 151 states and ocurred in iteration 7. Nontrivial modules had stage [2, 1, 3, 0, 1]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/10 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 104 mSDtfsCounter, 153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf97 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 23:00:37,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-14 23:00:37,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE