./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/java_Nested.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/java_Nested.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 6f3c7109e3632c85dc9002b2a2bde96ba9bdc501efcd49505c298845bf1ea677 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:19:25,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:19:25,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:19:25,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:19:25,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:19:25,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:19:25,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:19:25,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:19:25,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:19:25,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:19:25,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:19:25,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:19:25,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:19:25,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:19:25,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:19:25,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:19:25,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:19:25,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:19:25,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:19:25,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:19:25,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:19:25,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:19:25,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:19:25,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:19:25,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:19:25,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:19:25,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:19:25,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:19:25,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:19:25,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:19:25,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:19:25,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:19:25,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:19:25,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:19:25,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:19:25,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:19:25,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:19:25,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:19:25,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:19:25,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:19:25,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:19:25,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:19:25,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:19:25,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:19:25,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:19:25,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:19:25,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:19:25,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:19:25,221 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:19:25,222 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:19:25,222 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:19:25,222 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:19:25,222 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:19:25,222 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:19:25,223 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:19:25,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:19:25,223 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:19:25,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:19:25,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:19:25,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:19:25,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:19:25,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:19:25,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:19:25,224 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:19:25,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:19:25,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:19:25,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:19:25,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:19:25,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:19:25,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:19:25,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:19:25,227 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:19:25,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f3c7109e3632c85dc9002b2a2bde96ba9bdc501efcd49505c298845bf1ea677 [2021-12-19 17:19:25,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:19:25,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:19:25,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:19:25,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:19:25,469 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:19:25,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2021-12-19 17:19:25,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a532378b1/1d0d9845061245bd83967a478b4e9cd5/FLAG612400360 [2021-12-19 17:19:25,884 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:19:25,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2021-12-19 17:19:25,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a532378b1/1d0d9845061245bd83967a478b4e9cd5/FLAG612400360 [2021-12-19 17:19:26,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a532378b1/1d0d9845061245bd83967a478b4e9cd5 [2021-12-19 17:19:26,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:19:26,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:19:26,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:19:26,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:19:26,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:19:26,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edb24c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26, skipping insertion in model container [2021-12-19 17:19:26,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:19:26,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:19:26,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:19:26,445 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:19:26,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:19:26,484 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:19:26,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26 WrapperNode [2021-12-19 17:19:26,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:19:26,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:19:26,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:19:26,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:19:26,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,508 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-12-19 17:19:26,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:19:26,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:19:26,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:19:26,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:19:26,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:19:26,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:19:26,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:19:26,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:19:26,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (1/1) ... [2021-12-19 17:19:26,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:26,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:26,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 17:19:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:19:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:19:26,641 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:19:26,643 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:19:26,714 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:19:26,720 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:19:26,721 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 17:19:26,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:26 BoogieIcfgContainer [2021-12-19 17:19:26,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:19:26,725 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:19:26,725 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:19:26,728 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:19:26,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:26,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:19:26" (1/3) ... [2021-12-19 17:19:26,730 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60d827a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:19:26, skipping insertion in model container [2021-12-19 17:19:26,730 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:26,730 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:26" (2/3) ... [2021-12-19 17:19:26,730 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60d827a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:19:26, skipping insertion in model container [2021-12-19 17:19:26,731 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:26,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:26" (3/3) ... [2021-12-19 17:19:26,732 INFO L388 chiAutomizerObserver]: Analyzing ICFG java_Nested.c [2021-12-19 17:19:26,776 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:19:26,777 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:19:26,777 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:19:26,777 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:19:26,777 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:19:26,777 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:19:26,777 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:19:26,777 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:19:26,788 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 17:19:26,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:19:26,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:26,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:26,811 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:26,811 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:19:26,811 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:19:26,811 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 17:19:26,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:19:26,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:26,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:26,814 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:26,814 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:19:26,819 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~c~0#1;main_~c~0#1 := 0;main_~i~0#1 := 0; 5#L10-2true [2021-12-19 17:19:26,820 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 3#L12-2true assume !(main_~j~0#1 < 12); 7#L12-3true main_~i~0#1 := 1 + main_~i~0#1; 5#L10-2true [2021-12-19 17:19:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:19:26,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:26,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972592040] [2021-12-19 17:19:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:26,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:26,902 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:26,921 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-12-19 17:19:26,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:26,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976123539] [2021-12-19 17:19:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:26,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:27,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976123539] [2021-12-19 17:19:27,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976123539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:19:27,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:19:27,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 17:19:27,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206999661] [2021-12-19 17:19:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:19:27,017 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:27,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:19:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:19:27,049 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 17:19:27,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:27,083 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-12-19 17:19:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:19:27,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-12-19 17:19:27,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:19:27,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2021-12-19 17:19:27,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-19 17:19:27,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-19 17:19:27,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2021-12-19 17:19:27,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:27,108 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-12-19 17:19:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2021-12-19 17:19:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-12-19 17:19:27,142 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 17:19:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-12-19 17:19:27,144 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-12-19 17:19:27,144 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-12-19 17:19:27,144 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:19:27,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-12-19 17:19:27,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:19:27,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:27,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:27,146 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:27,146 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:19:27,147 INFO L791 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~c~0#1;main_~c~0#1 := 0;main_~i~0#1 := 0; 30#L10-2 [2021-12-19 17:19:27,147 INFO L793 eck$LassoCheckResult]: Loop: 30#L10-2 assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 28#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 29#L12-2 assume !(main_~j~0#1 < 12); 33#L12-3 main_~i~0#1 := 1 + main_~i~0#1; 30#L10-2 [2021-12-19 17:19:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-19 17:19:27,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185785412] [2021-12-19 17:19:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,167 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:27,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2021-12-19 17:19:27,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130771076] [2021-12-19 17:19:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:27,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130771076] [2021-12-19 17:19:27,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130771076] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:19:27,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617572810] [2021-12-19 17:19:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:19:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:27,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:19:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:27,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 17:19:27,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 17:19:27,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:19:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617572810] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:19:27,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:19:27,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 17:19:27,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515613820] [2021-12-19 17:19:27,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:19:27,302 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:27,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 17:19:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 17:19:27,303 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second 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 17:19:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:27,320 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-12-19 17:19:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 17:19:27,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-12-19 17:19:27,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-19 17:19:27,323 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2021-12-19 17:19:27,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-19 17:19:27,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-19 17:19:27,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2021-12-19 17:19:27,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:27,324 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-19 17:19:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2021-12-19 17:19:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-19 17:19:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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 17:19:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-12-19 17:19:27,327 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-19 17:19:27,327 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-19 17:19:27,327 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:19:27,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-12-19 17:19:27,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-19 17:19:27,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:27,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:27,329 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:27,329 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2021-12-19 17:19:27,329 INFO L791 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~c~0#1;main_~c~0#1 := 0;main_~i~0#1 := 0; 72#L10-2 [2021-12-19 17:19:27,330 INFO L793 eck$LassoCheckResult]: Loop: 72#L10-2 assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 70#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 71#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 78#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 77#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 76#L12-2 assume !(main_~j~0#1 < 12); 75#L12-3 main_~i~0#1 := 1 + main_~i~0#1; 72#L10-2 [2021-12-19 17:19:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-19 17:19:27,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335992560] [2021-12-19 17:19:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,341 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,344 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -787882000, now seen corresponding path program 2 times [2021-12-19 17:19:27,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695013471] [2021-12-19 17:19:27,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:27,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695013471] [2021-12-19 17:19:27,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695013471] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:19:27,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944187061] [2021-12-19 17:19:27,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 17:19:27,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:19:27,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:27,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:19:27,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 17:19:27,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 17:19:27,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 17:19:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 17:19:27,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:19:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:27,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944187061] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:19:27,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:19:27,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-19 17:19:27,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671091003] [2021-12-19 17:19:27,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:19:27,511 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:27,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 17:19:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-12-19 17:19:27,512 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:27,527 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-12-19 17:19:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 17:19:27,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2021-12-19 17:19:27,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-19 17:19:27,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 15 transitions. [2021-12-19 17:19:27,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-12-19 17:19:27,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-19 17:19:27,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-12-19 17:19:27,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:27,530 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-19 17:19:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-12-19 17:19:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-19 17:19:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-19 17:19:27,532 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-19 17:19:27,532 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-19 17:19:27,532 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:19:27,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 15 transitions. [2021-12-19 17:19:27,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-19 17:19:27,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:27,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:27,533 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:27,533 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2021-12-19 17:19:27,534 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~c~0#1;main_~c~0#1 := 0;main_~i~0#1 := 0; 145#L10-2 [2021-12-19 17:19:27,534 INFO L793 eck$LassoCheckResult]: Loop: 145#L10-2 assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 143#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 144#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 156#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 155#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 154#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 153#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 152#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 151#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 150#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 149#L12-2 assume !(main_~j~0#1 < 12); 148#L12-3 main_~i~0#1 := 1 + main_~i~0#1; 145#L10-2 [2021-12-19 17:19:27,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-19 17:19:27,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669366084] [2021-12-19 17:19:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash -219093776, now seen corresponding path program 3 times [2021-12-19 17:19:27,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685282930] [2021-12-19 17:19:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,558 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,574 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:27,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:27,575 INFO L85 PathProgramCache]: Analyzing trace with hash 995055026, now seen corresponding path program 1 times [2021-12-19 17:19:27,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:27,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970777149] [2021-12-19 17:19:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:27,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,589 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:27,602 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:27,789 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:27,790 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:27,790 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:27,790 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:27,790 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:27,791 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:27,791 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:27,791 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:27,791 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration4_Loop [2021-12-19 17:19:27,791 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:27,791 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:27,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:27,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:27,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:27,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:27,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:27,866 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:27,867 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:27,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:27,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:27,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:27,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 17:19:27,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:27,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:27,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:27,943 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 17:19:27,992 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 17:19:27,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:27,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:27,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:27,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 17:19:27,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:27,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:28,020 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 17:19:28,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 17:19:28,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:28,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 17:19:28,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:28,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,149 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:28,149 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=0} Honda state: {ULTIMATE.start_main_~c~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=11}, {ULTIMATE.start_main_~c~0#1=-1}, {ULTIMATE.start_main_~c~0#1=-1}] Lambdas: [1, 1, 1] Nus: [0, 0] [2021-12-19 17:19:28,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:28,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 17:19:28,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:28,204 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0#1=12} Honda state: {ULTIMATE.start_main_~j~0#1=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:19:28,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 17:19:28,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:28,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-19 17:19:28,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:28,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,335 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:28,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,338 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:28,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:28,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:28,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:28,339 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:28,339 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,339 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:28,339 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:28,339 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration4_Loop [2021-12-19 17:19:28,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:28,339 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:28,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,404 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:28,407 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:28,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:28,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-19 17:19:28,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:28,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:28,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:28,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:28,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:28,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:28,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:28,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:28,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,458 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-19 17:19:28,461 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:28,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:28,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:28,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:28,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:28,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:28,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:28,481 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:28,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-19 17:19:28,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:28,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:28,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:28,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:28,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:28,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:28,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:28,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:28,508 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:28,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,526 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-19 17:19:28,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:28,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:28,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:28,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:28,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:28,538 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:28,538 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:28,547 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:28,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,565 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-19 17:19:28,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:28,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:28,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:28,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:28,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:28,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:28,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:28,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:28,582 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:28,585 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:19:28,585 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:19:28,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,596 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:28,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:28,598 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:28,598 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:28,599 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-19 17:19:28,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-19 17:19:28,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,625 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:28,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:28,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:28,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-19 17:19:28,802 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 17:19:28,803 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 15 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 17:19:28,828 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 15 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 26 states and 29 transitions. Complement of second has 4 states. [2021-12-19 17:19:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:28,830 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 17:19:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:19:28,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 12 letters. [2021-12-19 17:19:28,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:28,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 12 letters. [2021-12-19 17:19:28,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:28,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 24 letters. [2021-12-19 17:19:28,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:28,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2021-12-19 17:19:28,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:28,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 28 transitions. [2021-12-19 17:19:28,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-19 17:19:28,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-19 17:19:28,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2021-12-19 17:19:28,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:19:28,835 INFO L681 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-19 17:19:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2021-12-19 17:19:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2021-12-19 17:19:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-12-19 17:19:28,837 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-12-19 17:19:28,837 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-12-19 17:19:28,837 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:19:28,837 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2021-12-19 17:19:28,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:28,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:28,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:28,839 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:19:28,839 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:19:28,839 INFO L791 eck$LassoCheckResult]: Stem: 250#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 251#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~c~0#1;main_~c~0#1 := 0;main_~i~0#1 := 0; 248#L10-2 assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 245#L12-2 [2021-12-19 17:19:28,839 INFO L793 eck$LassoCheckResult]: Loop: 245#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 245#L12-2 [2021-12-19 17:19:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:19:28,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914552121] [2021-12-19 17:19:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:28,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:28,852 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:28,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:28,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-19 17:19:28,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:28,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443529498] [2021-12-19 17:19:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:28,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:28,858 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:28,863 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-12-19 17:19:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692688951] [2021-12-19 17:19:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:28,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:28,879 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:28,882 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:28,901 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:28,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:28,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:28,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:28,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:28,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:28,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:28,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration5_Loop [2021-12-19 17:19:28,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:28,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:28,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:28,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:28,963 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:28,963 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:28,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:28,968 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 17:19:28,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:28,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:28,990 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 17:19:28,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:28,996 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:19:29,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,019 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:29,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:29,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:29,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-19 17:19:29,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,076 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 17:19:29,078 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 17:19:29,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:29,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:29,114 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:29,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-19 17:19:29,117 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:29,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:29,117 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:29,117 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:29,117 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:29,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:29,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:29,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration5_Loop [2021-12-19 17:19:29,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:29,118 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:29,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,168 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:29,169 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:29,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,170 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 17:19:29,173 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 17:19:29,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:29,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:29,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:29,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:29,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:29,184 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:29,184 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:29,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:29,228 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 17:19:29,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,230 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 17:19:29,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:29,231 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 17:19:29,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:29,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:29,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:29,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:29,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:29,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:29,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:29,246 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:29,248 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:19:29,248 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:19:29,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,249 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 17:19:29,250 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 17:19:29,250 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:29,250 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:29,251 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:29,251 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 23 Supporting invariants [] [2021-12-19 17:19:29,265 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 17:19:29,266 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:29,295 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-19 17:19:29,295 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 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 17:19:29,309 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 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 32 states and 37 transitions. Complement of second has 5 states. [2021-12-19 17:19:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:29,312 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 17:19:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:19:29,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-19 17:19:29,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-19 17:19:29,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-19 17:19:29,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2021-12-19 17:19:29,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:29,314 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 28 states and 32 transitions. [2021-12-19 17:19:29,314 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-19 17:19:29,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-12-19 17:19:29,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2021-12-19 17:19:29,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:19:29,315 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-19 17:19:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2021-12-19 17:19:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2021-12-19 17:19:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-12-19 17:19:29,317 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-12-19 17:19:29,317 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-12-19 17:19:29,317 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 17:19:29,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2021-12-19 17:19:29,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:29,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:29,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:29,318 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1, 1] [2021-12-19 17:19:29,318 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:19:29,318 INFO L791 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 331#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~c~0#1;main_~c~0#1 := 0;main_~i~0#1 := 0; 328#L10-2 assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 326#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 327#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 340#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 339#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 338#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 337#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 336#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 335#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 334#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 333#L12-2 assume !(main_~j~0#1 < 12); 332#L12-3 main_~i~0#1 := 1 + main_~i~0#1; 329#L10-2 assume !!(main_~i~0#1 < 10);main_~j~0#1 := 3; 325#L12-2 [2021-12-19 17:19:29,318 INFO L793 eck$LassoCheckResult]: Loop: 325#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~c~0#1 := 1 + main_~c~0#1;main_~j~0#1 := 2 + main_~j~0#1; 325#L12-2 [2021-12-19 17:19:29,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,318 INFO L85 PathProgramCache]: Analyzing trace with hash 781934745, now seen corresponding path program 2 times [2021-12-19 17:19:29,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:29,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585333507] [2021-12-19 17:19:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:29,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:29,343 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:29,365 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-12-19 17:19:29,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:29,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083566103] [2021-12-19 17:19:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:29,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:29,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:29,370 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1529826661, now seen corresponding path program 3 times [2021-12-19 17:19:29,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:29,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316909886] [2021-12-19 17:19:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:29,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:29,391 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:29,407 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:29,424 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:29,424 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:29,424 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:29,424 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:29,424 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:29,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:29,424 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:29,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration6_Loop [2021-12-19 17:19:29,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:29,424 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:29,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,474 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:29,475 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:29,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,476 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 17:19:29,477 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 17:19:29,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:29,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:29,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:29,508 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 17:19:29,525 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 17:19:29,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,527 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:29,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:29,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:29,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-19 17:19:29,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,556 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:29,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-19 17:19:29,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:29,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:29,584 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:29,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,587 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:29,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:29,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:29,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:29,588 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:29,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:29,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:29,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration6_Loop [2021-12-19 17:19:29,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:29,588 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:29,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:29,644 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:29,645 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:29,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,646 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:29,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-19 17:19:29,647 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:29,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:29,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:29,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:29,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:29,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:29,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:29,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:29,656 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:29,658 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:19:29,658 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:19:29,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:29,659 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:29,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-19 17:19:29,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:29,661 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:29,661 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:29,661 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 23 Supporting invariants [] [2021-12-19 17:19:29,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,676 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,741 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:29,742 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-19 17:19:29,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 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 17:19:29,750 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 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 30 states and 34 transitions. Complement of second has 5 states. [2021-12-19 17:19:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:29,751 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 17:19:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:19:29,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 15 letters. Loop has 1 letters. [2021-12-19 17:19:29,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,752 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:19:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:29,806 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 17:19:29,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 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 17:19:29,813 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 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 30 states and 34 transitions. Complement of second has 5 states. [2021-12-19 17:19:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:29,815 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 17:19:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-19 17:19:29,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 15 letters. Loop has 1 letters. [2021-12-19 17:19:29,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,815 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:19:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:29,897 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:29,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:29,898 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 17:19:29,898 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 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 17:19:29,909 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 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 19 states and 21 transitions. Complement of second has 4 states. [2021-12-19 17:19:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:29,912 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 17:19:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-19 17:19:29,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 15 letters. Loop has 1 letters. [2021-12-19 17:19:29,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 1 letters. [2021-12-19 17:19:29,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 15 letters. Loop has 2 letters. [2021-12-19 17:19:29,916 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:29,917 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2021-12-19 17:19:29,919 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:19:29,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2021-12-19 17:19:29,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:19:29,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:19:29,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:19:29,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:29,919 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:29,919 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:29,919 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:29,920 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 17:19:29,920 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 17:19:29,920 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:19:29,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 17:19:29,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:29,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:19:29 BoogieIcfgContainer [2021-12-19 17:19:29,930 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:19:29,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:19:29,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:19:29,931 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:19:29,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:26" (3/4) ... [2021-12-19 17:19:29,933 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 17:19:29,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:19:29,934 INFO L158 Benchmark]: Toolchain (without parser) took 3611.74ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 65.8MB in the beginning and 83.1MB in the end (delta: -17.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:19:29,934 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:29,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.29ms. Allocated memory is still 94.4MB. Free memory was 65.5MB in the beginning and 72.4MB in the end (delta: -6.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-19 17:19:29,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.56ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:29,935 INFO L158 Benchmark]: Boogie Preprocessor took 13.22ms. Allocated memory is still 94.4MB. Free memory was 71.1MB in the beginning and 70.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:29,936 INFO L158 Benchmark]: RCFGBuilder took 198.49ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 62.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:19:29,936 INFO L158 Benchmark]: BuchiAutomizer took 3205.20ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 62.0MB in the beginning and 83.1MB in the end (delta: -21.1MB). Peak memory consumption was 683.3kB. Max. memory is 16.1GB. [2021-12-19 17:19:29,936 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 113.2MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:29,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.29ms. Allocated memory is still 94.4MB. Free memory was 65.5MB in the beginning and 72.4MB in the end (delta: -6.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.56ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.22ms. Allocated memory is still 94.4MB. Free memory was 71.1MB in the beginning and 70.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 198.49ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 62.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3205.20ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 62.0MB in the beginning and 83.1MB in the end (delta: -21.1MB). Peak memory consumption was 683.3kB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 113.2MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 3 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 7 iterations. TraceHistogramMax:9. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 46 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax172 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 17:19:29,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-19 17:19:30,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-19 17:19:30,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE