./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/a.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/a.01.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 7dacefd51bf525e1f18311af2c5b989a40c07b1caf3a58b24e0820913f865011 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:18:42,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:18:42,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:18:42,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:18:42,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:18:42,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:18:42,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:18:42,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:18:42,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:18:42,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:18:42,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:18:42,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:18:42,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:18:42,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:18:42,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:18:42,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:18:42,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:18:42,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:18:42,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:18:42,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:18:42,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:18:42,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:18:42,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:18:42,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:18:42,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:18:42,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:18:42,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:18:42,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:18:42,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:18:42,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:18:42,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:18:42,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:18:42,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:18:42,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:18:42,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:18:42,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:18:42,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:18:42,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:18:42,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:18:42,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:18:42,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:18:42,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:18:42,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:18:42,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:18:42,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:18:42,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:18:42,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:18:42,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:18:42,724 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:18:42,724 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:18:42,724 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:18:42,725 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:18:42,725 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:18:42,725 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:18:42,725 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:18:42,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:18:42,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:18:42,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:18:42,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:18:42,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:18:42,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:18:42,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:18:42,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:18:42,727 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:18:42,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:18:42,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:18:42,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:18:42,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:18:42,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:18:42,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:18:42,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:18:42,729 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:18:42,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dacefd51bf525e1f18311af2c5b989a40c07b1caf3a58b24e0820913f865011 [2021-12-19 17:18:42,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:18:42,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:18:42,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:18:42,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:18:42,939 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:18:42,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/a.01.c [2021-12-19 17:18:42,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a25b03945/025f7957eaed4bdaa0cac110072f31de/FLAGc151d4ed8 [2021-12-19 17:18:43,277 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:18:43,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/a.01.c [2021-12-19 17:18:43,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a25b03945/025f7957eaed4bdaa0cac110072f31de/FLAGc151d4ed8 [2021-12-19 17:18:43,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a25b03945/025f7957eaed4bdaa0cac110072f31de [2021-12-19 17:18:43,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:18:43,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:18:43,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:18:43,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:18:43,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:18:43,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45dab4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43, skipping insertion in model container [2021-12-19 17:18:43,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:18:43,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:18:43,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:18:43,867 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:18:43,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:18:43,883 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:18:43,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43 WrapperNode [2021-12-19 17:18:43,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:18:43,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:18:43,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:18:43,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:18:43,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,902 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-19 17:18:43,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:18:43,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:18:43,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:18:43,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:18:43,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:18:43,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:18:43,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:18:43,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:18:43,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (1/1) ... [2021-12-19 17:18:43,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:43,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:18:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:18:43,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 17:18:44,004 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:18:44,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:18:44,062 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:18:44,066 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:18:44,067 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 17:18:44,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:44 BoogieIcfgContainer [2021-12-19 17:18:44,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:18:44,069 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:18:44,069 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:18:44,071 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:18:44,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:44,071 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:18:43" (1/3) ... [2021-12-19 17:18:44,073 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@382e3976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:18:44, skipping insertion in model container [2021-12-19 17:18:44,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:44,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:43" (2/3) ... [2021-12-19 17:18:44,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@382e3976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:18:44, skipping insertion in model container [2021-12-19 17:18:44,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:44,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:44" (3/3) ... [2021-12-19 17:18:44,075 INFO L388 chiAutomizerObserver]: Analyzing ICFG a.01.c [2021-12-19 17:18:44,112 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:18:44,112 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:18:44,112 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:18:44,112 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:18:44,112 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:18:44,112 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:18:44,113 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:18:44,113 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:18:44,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-12-19 17:18:44,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:18:44,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:44,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:44,140 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:44,140 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:18:44,140 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:18:44,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-12-19 17:18:44,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:18:44,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:44,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:44,142 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:44,142 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:18:44,146 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 10#L11-2true [2021-12-19 17:18:44,147 INFO L793 eck$LassoCheckResult]: Loop: 10#L11-2true assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 6#L13-2true assume !(main_~y~0#1 < main_~x~0#1); 7#L13-3true main_~x~0#1 := main_~x~0#1 - 1; 10#L11-2true [2021-12-19 17:18:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:18:44,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564266623] [2021-12-19 17:18:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,208 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,226 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-12-19 17:18:44,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449854660] [2021-12-19 17:18:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:44,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:44,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449854660] [2021-12-19 17:18:44,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449854660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:44,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:44,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 17:18:44,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249942131] [2021-12-19 17:18:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:44,297 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:18:44,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:44,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:18:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:18:44,322 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:44,357 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-12-19 17:18:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:18:44,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-12-19 17:18:44,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:18:44,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2021-12-19 17:18:44,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-19 17:18:44,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-19 17:18:44,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2021-12-19 17:18:44,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:44,372 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-12-19 17:18:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2021-12-19 17:18:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-12-19 17:18:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-12-19 17:18:44,400 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-12-19 17:18:44,401 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-12-19 17:18:44,401 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:18:44,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-12-19 17:18:44,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:18:44,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:44,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:44,403 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:44,403 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:44,403 INFO L791 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 29#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 33#L11-2 [2021-12-19 17:18:44,404 INFO L793 eck$LassoCheckResult]: Loop: 33#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 30#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 31#L13-2 assume !(main_~y~0#1 < main_~x~0#1); 32#L13-3 main_~x~0#1 := main_~x~0#1 - 1; 33#L11-2 [2021-12-19 17:18:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-19 17:18:44,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358906824] [2021-12-19 17:18:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,416 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2021-12-19 17:18:44,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745121231] [2021-12-19 17:18:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,424 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash 889698226, now seen corresponding path program 1 times [2021-12-19 17:18:44,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685162278] [2021-12-19 17:18:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,437 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,528 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:44,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:44,532 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:44,532 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:44,532 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:44,532 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,532 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:44,532 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:44,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration2_Loop [2021-12-19 17:18:44,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:44,533 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:44,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:44,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:44,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:44,600 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:44,600 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:44,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:44,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:44,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 17:18:44,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:44,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:44,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:44,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 17:18:44,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:44,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:44,677 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:44,677 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:44,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:44,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 17:18:44,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:44,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:44,734 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 [2021-12-19 17:18:44,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 17:18:44,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:44,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:44,821 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:44,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:44,826 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:44,826 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:44,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:44,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:44,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:44,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:44,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:44,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration2_Loop [2021-12-19 17:18:44,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:44,827 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:44,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:44,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:44,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:44,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:44,880 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:44,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 17:18:44,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:44,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:44,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:44,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:44,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:44,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:44,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:44,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:44,921 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 [2021-12-19 17:18:44,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 17:18:44,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:44,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:44,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:44,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:44,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:44,933 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:44,933 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:44,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:44,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:44,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 17:18:44,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:44,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:44,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:44,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:44,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:44,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:44,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:44,971 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:44,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:44,982 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:44,982 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:44,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:44,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:44,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 17:18:45,024 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:45,024 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:45,024 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:45,024 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 [] [2021-12-19 17:18:45,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-19 17:18:45,043 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:45,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:45,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:45,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:45,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 17:18:45,129 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 [2021-12-19 17:18:45,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 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) [2021-12-19 17:18:45,148 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. 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 10 states and 13 transitions. Complement of second has 4 states. [2021-12-19 17:18:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:45,150 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) [2021-12-19 17:18:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:18:45,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-19 17:18:45,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:45,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-19 17:18:45,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:45,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-19 17:18:45,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:45,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2021-12-19 17:18:45,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:18:45,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 12 transitions. [2021-12-19 17:18:45,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-19 17:18:45,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-19 17:18:45,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-12-19 17:18:45,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:45,153 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-19 17:18:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-12-19 17:18:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-12-19 17:18:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-19 17:18:45,154 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:18:45,154 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:18:45,154 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:18:45,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-19 17:18:45,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:18:45,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:45,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:45,155 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:18:45,155 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:18:45,156 INFO L791 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 83#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 89#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 84#L13-2 [2021-12-19 17:18:45,156 INFO L793 eck$LassoCheckResult]: Loop: 84#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 84#L13-2 [2021-12-19 17:18:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:18:45,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:45,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187317880] [2021-12-19 17:18:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:45,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,161 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-19 17:18:45,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:45,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507513157] [2021-12-19 17:18:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:45,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,164 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,166 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-12-19 17:18:45,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:45,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187447250] [2021-12-19 17:18:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:45,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,170 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,172 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:45,182 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:45,182 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:45,182 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:45,182 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:45,182 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:45,182 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,182 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:45,182 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:45,182 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration3_Loop [2021-12-19 17:18:45,182 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:45,182 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:45,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,211 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:45,211 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:45,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,216 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-19 17:18:45,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:45,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:45,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:45,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:45,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-19 17:18:45,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:45,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:45,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:45,283 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:45,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:45,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:45,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-19 17:18:45,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-19 17:18:45,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:45,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:45,475 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:45,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,478 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:45,478 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:45,478 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:45,478 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:45,479 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:45,479 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,479 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:45,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:45,479 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration3_Loop [2021-12-19 17:18:45,479 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:45,479 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:45,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:45,522 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:45,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,523 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-19 17:18:45,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:45,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:45,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:45,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:45,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:45,537 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:45,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:45,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:45,558 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 [2021-12-19 17:18:45,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,559 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-19 17:18:45,561 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:45,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:45,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:45,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:45,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:45,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:45,570 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:45,585 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:45,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,603 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:45,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:45,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:45,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:45,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:45,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:45,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:45,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:45,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-19 17:18:45,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:45,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,642 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-19 17:18:45,642 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:45,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,643 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-19 17:18:45,645 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:45,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:45,645 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:45,645 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-19 17:18:45,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,660 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:45,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:45,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:45,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:45,689 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:45,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:45,690 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-19 17:18:45,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-12-19 17:18:45,700 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 16 states and 21 transitions. Complement of second has 5 states. [2021-12-19 17:18:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-12-19 17:18:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:18:45,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-19 17:18:45,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:45,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-19 17:18:45,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:45,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-19 17:18:45,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:45,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2021-12-19 17:18:45,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:18:45,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2021-12-19 17:18:45,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-19 17:18:45,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-12-19 17:18:45,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2021-12-19 17:18:45,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:45,704 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-19 17:18:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2021-12-19 17:18:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2021-12-19 17:18:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) 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) [2021-12-19 17:18:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-12-19 17:18:45,705 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-12-19 17:18:45,705 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-12-19 17:18:45,705 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:18:45,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-12-19 17:18:45,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:18:45,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:45,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:45,706 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-19 17:18:45,706 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:18:45,706 INFO L791 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 145#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 141#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 142#L13-2 assume !(main_~y~0#1 < main_~x~0#1); 143#L13-3 main_~x~0#1 := main_~x~0#1 - 1; 144#L11-2 assume !!(main_~x~0#1 > 0);main_~y~0#1 := 0; 140#L13-2 [2021-12-19 17:18:45,706 INFO L793 eck$LassoCheckResult]: Loop: 140#L13-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 1 + main_~y~0#1; 140#L13-2 [2021-12-19 17:18:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 2 times [2021-12-19 17:18:45,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:45,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168620612] [2021-12-19 17:18:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:45,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:45,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168620612] [2021-12-19 17:18:45,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168620612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:18:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131069860] [2021-12-19 17:18:45,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 17:18:45,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:18:45,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,756 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:18:45,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-19 17:18:45,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 17:18:45,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 17:18:45,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:18:45,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:45,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:18:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:45,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131069860] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:18:45,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:18:45,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-19 17:18:45,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765654430] [2021-12-19 17:18:45,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:18:45,813 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:18:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-12-19 17:18:45,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:45,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109430358] [2021-12-19 17:18:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:45,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,822 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:45,823 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:45,831 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:45,831 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:45,831 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:45,831 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:45,832 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:45,832 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,832 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:45,832 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:45,832 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration4_Loop [2021-12-19 17:18:45,832 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:45,832 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:45,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:45,868 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:45,868 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:45,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,894 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) [2021-12-19 17:18:45,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:45,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:45,939 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 [2021-12-19 17:18:45,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:45,947 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: [] [2021-12-19 17:18:45,963 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 [2021-12-19 17:18:45,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,964 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) [2021-12-19 17:18:45,968 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 [2021-12-19 17:18:45,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:45,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:45,997 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 [2021-12-19 17:18:45,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:45,998 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) [2021-12-19 17:18:46,000 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 [2021-12-19 17:18:46,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:46,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:46,111 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:46,114 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 [2021-12-19 17:18:46,114 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:46,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:46,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:46,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:46,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:46,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:46,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:46,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:46,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: a.01.c_Iteration4_Loop [2021-12-19 17:18:46,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:46,114 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:46,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:46,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:46,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:46,150 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:46,151 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:46,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:46,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:46,152 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) [2021-12-19 17:18:46,153 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 [2021-12-19 17:18:46,154 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:46,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:46,160 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:46,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:46,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:46,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:46,161 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:46,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:46,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:46,179 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-19 17:18:46,179 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:46,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:46,180 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) [2021-12-19 17:18:46,181 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 [2021-12-19 17:18:46,182 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:46,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:46,182 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:46,182 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-19 17:18:46,197 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 [2021-12-19 17:18:46,197 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:46,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:46,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:46,229 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:46,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:46,229 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-19 17:18:46,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-12-19 17:18:46,242 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 18 transitions. Complement of second has 5 states. [2021-12-19 17:18:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-12-19 17:18:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:18:46,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2021-12-19 17:18:46,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:46,243 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:46,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:46,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:46,275 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:46,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:46,276 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 [2021-12-19 17:18:46,276 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-12-19 17:18:46,283 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 18 transitions. Complement of second has 5 states. [2021-12-19 17:18:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:46,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-12-19 17:18:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:18:46,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2021-12-19 17:18:46,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:46,284 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:46,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:46,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:46,310 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:46,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:46,311 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 [2021-12-19 17:18:46,311 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-12-19 17:18:46,318 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 11 states and 13 transitions. Complement of second has 4 states. [2021-12-19 17:18:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-12-19 17:18:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-19 17:18:46,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2021-12-19 17:18:46,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:46,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2021-12-19 17:18:46,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:46,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-19 17:18:46,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:46,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-12-19 17:18:46,321 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:18:46,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2021-12-19 17:18:46,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:18:46,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:18:46,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:18:46,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:46,321 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:18:46,321 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:18:46,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 17:18:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-19 17:18:46,322 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:46,322 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-19 17:18:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-19 17:18:46,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-19 17:18:46,323 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:18:46,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-19 17:18:46,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:18:46,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:18:46,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:18:46,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:46,323 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:18:46,324 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:18:46,324 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:18:46,324 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:18:46,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 17:18:46,324 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:18:46,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 17:18:46,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:18:46 BoogieIcfgContainer [2021-12-19 17:18:46,328 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:18:46,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:18:46,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:18:46,329 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:18:46,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:44" (3/4) ... [2021-12-19 17:18:46,331 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 17:18:46,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:18:46,332 INFO L158 Benchmark]: Toolchain (without parser) took 2617.86ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 76.8MB in the beginning and 69.0MB in the end (delta: 7.8MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2021-12-19 17:18:46,332 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:18:46,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.19ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 82.6MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:18:46,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.32ms. Allocated memory is still 104.9MB. Free memory was 82.6MB in the beginning and 81.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:18:46,333 INFO L158 Benchmark]: Boogie Preprocessor took 11.39ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 80.3MB in the end (delta: 796.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:18:46,333 INFO L158 Benchmark]: RCFGBuilder took 153.14ms. Allocated memory is still 104.9MB. Free memory was 80.3MB in the beginning and 72.3MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:18:46,334 INFO L158 Benchmark]: BuchiAutomizer took 2259.74ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 72.3MB in the beginning and 69.7MB in the end (delta: 2.6MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2021-12-19 17:18:46,334 INFO L158 Benchmark]: Witness Printer took 2.37ms. Allocated memory is still 130.0MB. Free memory was 69.7MB in the beginning and 69.0MB in the end (delta: 744.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:18:46,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory was 61.7MB in the beginning and 61.6MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.19ms. Allocated memory is still 104.9MB. Free memory was 76.5MB in the beginning and 82.6MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.32ms. Allocated memory is still 104.9MB. Free memory was 82.6MB in the beginning and 81.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.39ms. Allocated memory is still 104.9MB. Free memory was 81.1MB in the beginning and 80.3MB in the end (delta: 796.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 153.14ms. Allocated memory is still 104.9MB. Free memory was 80.3MB in the beginning and 72.3MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2259.74ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 72.3MB in the beginning and 69.7MB in the end (delta: 2.6MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Witness Printer took 2.37ms. Allocated memory is still 130.0MB. Free memory was 69.7MB in the beginning and 69.0MB in the end (delta: 744.7kB). Peak memory consumption was 2.1MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 26 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax200 hnf97 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 17:18:46,356 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 [2021-12-19 17:18:46,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-19 17:18:46,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-19 17:18:46,972 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