./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Nested-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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/Nested-2.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 689bfa137c7ec291c9da872b4c0ae907dc49890ce91238f2d64af583a7257b4a --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:18:48,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:18:48,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:18:48,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:18:48,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:18:48,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:18:48,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:18:48,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:18:48,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:18:48,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:18:48,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:18:48,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:18:48,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:18:48,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:18:48,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:18:48,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:18:48,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:18:48,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:18:48,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:18:48,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:18:48,214 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:18:48,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:18:48,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:18:48,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:18:48,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:18:48,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:18:48,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:18:48,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:18:48,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:18:48,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:18:48,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:18:48,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:18:48,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:18:48,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:18:48,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:18:48,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:18:48,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:18:48,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:18:48,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:18:48,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:18:48,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:18:48,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:18:48,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:18:48,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:18:48,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:18:48,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:18:48,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:18:48,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:18:48,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:18:48,268 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:18:48,268 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:18:48,269 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:18:48,269 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:18:48,270 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:18:48,270 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:18:48,270 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:18:48,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:18:48,270 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:18:48,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:18:48,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:18:48,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:18:48,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:18:48,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:18:48,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:18:48,272 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:18:48,272 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:18:48,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:18:48,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:18:48,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:18:48,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:18:48,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:18:48,274 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:18:48,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 689bfa137c7ec291c9da872b4c0ae907dc49890ce91238f2d64af583a7257b4a [2022-07-23 14:18:48,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:18:48,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:18:48,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:18:48,551 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:18:48,551 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:18:48,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Nested-2.c [2022-07-23 14:18:48,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f5aac97/e1c6741546e94cfaa858c75d0095e59c/FLAG92b153cd5 [2022-07-23 14:18:48,977 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:18:48,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Nested-2.c [2022-07-23 14:18:48,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f5aac97/e1c6741546e94cfaa858c75d0095e59c/FLAG92b153cd5 [2022-07-23 14:18:48,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f5aac97/e1c6741546e94cfaa858c75d0095e59c [2022-07-23 14:18:49,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:18:49,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:18:49,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:18:49,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:18:49,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:18:49,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad0efdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49, skipping insertion in model container [2022-07-23 14:18:49,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:18:49,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:18:49,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:18:49,171 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:18:49,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:18:49,192 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:18:49,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49 WrapperNode [2022-07-23 14:18:49,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:18:49,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:18:49,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:18:49,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:18:49,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,217 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-07-23 14:18:49,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:18:49,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:18:49,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:18:49,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:18:49,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:18:49,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:18:49,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:18:49,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:18:49,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (1/1) ... [2022-07-23 14:18:49,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:49,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:49,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:49,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:18:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:18:49,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:18:49,396 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:18:49,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:18:49,470 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:18:49,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:18:49,477 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 14:18:49,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:49 BoogieIcfgContainer [2022-07-23 14:18:49,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:18:49,480 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:18:49,480 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:18:49,483 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:18:49,484 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:49,484 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:18:49" (1/3) ... [2022-07-23 14:18:49,485 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b7a1ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:18:49, skipping insertion in model container [2022-07-23 14:18:49,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:49,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:49" (2/3) ... [2022-07-23 14:18:49,485 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b7a1ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:18:49, skipping insertion in model container [2022-07-23 14:18:49,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:49,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:49" (3/3) ... [2022-07-23 14:18:49,487 INFO L354 chiAutomizerObserver]: Analyzing ICFG Nested-2.c [2022-07-23 14:18:49,542 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:18:49,542 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:18:49,542 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:18:49,542 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:18:49,543 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:18:49,543 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:18:49,543 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:18:49,543 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:18:49,547 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) [2022-07-23 14:18:49,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:18:49,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:49,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:49,565 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:49,566 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:18:49,566 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:18:49,567 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) [2022-07-23 14:18:49,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:18:49,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:49,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:49,568 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:49,569 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:18:49,574 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0;main_~j~0#1 := 3; 9#L11-2true [2022-07-23 14:18:49,575 INFO L754 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~i~0#1 < 10); 2#L12-2true assume !(main_~j~0#1 < 12); 5#L12-3true main_~i~0#1 := 1 + main_~i~0#1; 9#L11-2true [2022-07-23 14:18:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:18:49,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:49,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541809295] [2022-07-23 14:18:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:49,661 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:49,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-07-23 14:18:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:49,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090424413] [2022-07-23 14:18:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:49,747 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:49,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:49,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-07-23 14:18:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:49,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649899430] [2022-07-23 14:18:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:18:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649899430] [2022-07-23 14:18:49,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649899430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:18:49,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:18:49,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 14:18:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318952692] [2022-07-23 14:18:49,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:18:49,898 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:49,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:49,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:49,912 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:49,912 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:49,912 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:49,912 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:49,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:49,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2022-07-23 14:18:49,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:49,913 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:49,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:49,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:49,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:49,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,022 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:50,024 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:50,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:18:50,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:50,054 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: [] [2022-07-23 14:18:50,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:18:50,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:50,092 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: [] [2022-07-23 14:18:50,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:18:50,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,135 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:50,136 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: [] [2022-07-23 14:18:50,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:18:50,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:18:50,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:50,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,234 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:50,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,237 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:50,237 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:50,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:50,238 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:50,238 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:50,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,238 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:50,238 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:50,238 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration1_Loop [2022-07-23 14:18:50,238 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:50,238 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:50,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:50,297 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:50,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,312 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:50,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:50,320 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:50,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:50,320 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:50,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:50,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:18:50,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:50,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:50,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:50,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:50,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:50,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:50,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:50,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:50,401 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:50,401 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:50,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 14:18:50,415 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:50,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,441 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 14:18:50,443 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:50,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:50,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:50,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:50,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:50,454 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:50,454 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:50,470 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:50,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-23 14:18:50,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,489 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:18:50,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:50,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:50,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:50,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:50,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:50,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:50,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:50,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:50,507 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:50,510 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:50,510 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:50,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,513 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:18:50,514 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:50,514 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:50,515 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:50,515 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 [] [2022-07-23 14:18:50,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-23 14:18:50,538 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:50,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:50,574 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:50,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:50,634 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:18:50,636 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:50,677 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2022-07-23 14:18:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-07-23 14:18:50,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-23 14:18:50,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:50,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-23 14:18:50,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:50,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-23 14:18:50,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:50,691 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2022-07-23 14:18:50,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:18:50,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-23 14:18:50,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-07-23 14:18:50,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-23 14:18:50,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-23 14:18:50,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:50,701 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:18:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-23 14:18:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-07-23 14:18:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-07-23 14:18:50,723 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-23 14:18:50,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:18:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:18:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:18:50,727 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:18:50,734 INFO L93 Difference]: Finished difference Result 9 states and 12 transitions. [2022-07-23 14:18:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:18:50,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2022-07-23 14:18:50,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:18:50,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 12 transitions. [2022-07-23 14:18:50,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-23 14:18:50,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-23 14:18:50,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-07-23 14:18:50,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:50,740 INFO L369 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-07-23 14:18:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-07-23 14:18:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-07-23 14:18:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-07-23 14:18:50,741 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:18:50,741 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:18:50,741 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:18:50,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-07-23 14:18:50,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:18:50,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:50,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:50,742 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 14:18:50,742 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:18:50,743 INFO L752 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 96#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;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0;main_~j~0#1 := 3; 99#L11-2 assume !!(main_~i~0#1 < 10); 92#L12-2 [2022-07-23 14:18:50,743 INFO L754 eck$LassoCheckResult]: Loop: 92#L12-2 assume !!(main_~j~0#1 < 12);main_~j~0#1 := main_~j~0#1 - 1;main_~j~0#1 := 2 + main_~j~0#1; 92#L12-2 [2022-07-23 14:18:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-23 14:18:50,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:50,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984706163] [2022-07-23 14:18:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:50,749 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:50,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-07-23 14:18:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:50,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818799492] [2022-07-23 14:18:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:50,754 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:50,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-07-23 14:18:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:50,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686767913] [2022-07-23 14:18:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:50,761 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:50,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:50,775 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:50,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:50,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:50,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:50,775 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:50,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:50,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:50,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2022-07-23 14:18:50,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:50,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:50,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,810 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:50,810 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:50,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:18:50,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:50,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:50,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:18:50,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,894 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:50,894 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:50,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,910 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:18:50,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:50,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-07-23 14:18:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:50,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:50,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:18:50,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:50,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:50,985 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:50,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:50,993 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:50,993 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:50,993 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:50,993 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:50,993 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:50,993 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:50,993 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:50,993 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:50,993 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nested-2.c_Iteration2_Loop [2022-07-23 14:18:50,993 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:50,993 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:50,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:50,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:51,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:51,040 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:51,041 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:51,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:51,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:51,043 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:51,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:18:51,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:51,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:51,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:51,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:51,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:51,054 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:51,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:51,068 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:51,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:51,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:51,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:51,084 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) [2022-07-23 14:18:51,085 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 [2022-07-23 14:18:51,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:51,092 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:51,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:51,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:51,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:51,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:51,102 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:51,134 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:51,149 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 [2022-07-23 14:18:51,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:51,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:51,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 14:18:51,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:51,178 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:51,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:51,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:51,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:51,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:51,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:51,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:51,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:51,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:51,203 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:51,204 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:18:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:51,208 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:51,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:18:51,219 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:51,219 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:51,219 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:51,219 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 [] [2022-07-23 14:18:51,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:51,244 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:51,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:51,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:51,276 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:18:51,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:51,279 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:51,279 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:51,293 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 20 transitions. Complement of second has 4 states. [2022-07-23 14:18:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:51,297 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) [2022-07-23 14:18:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-23 14:18:51,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-23 14:18:51,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:51,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-23 14:18:51,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:51,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-23 14:18:51,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:51,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2022-07-23 14:18:51,298 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:18:51,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2022-07-23 14:18:51,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:18:51,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:18:51,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:18:51,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:18:51,299 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:51,299 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:51,299 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:51,299 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:18:51,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:18:51,299 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:18:51,299 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:18:51,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:18:51 BoogieIcfgContainer [2022-07-23 14:18:51,306 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:18:51,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:18:51,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:18:51,306 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:18:51,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:49" (3/4) ... [2022-07-23 14:18:51,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:18:51,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:18:51,309 INFO L158 Benchmark]: Toolchain (without parser) took 2305.78ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 59.5MB in the beginning and 96.2MB in the end (delta: -36.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:51,310 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:51,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.17ms. Allocated memory is still 98.6MB. Free memory was 59.3MB in the beginning and 50.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:18:51,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.05ms. Allocated memory is still 98.6MB. Free memory was 50.6MB in the beginning and 49.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:51,311 INFO L158 Benchmark]: Boogie Preprocessor took 15.80ms. Allocated memory is still 98.6MB. Free memory was 49.3MB in the beginning and 48.4MB in the end (delta: 860.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:18:51,312 INFO L158 Benchmark]: RCFGBuilder took 241.30ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 48.3MB in the beginning and 101.2MB in the end (delta: -52.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-23 14:18:51,312 INFO L158 Benchmark]: BuchiAutomizer took 1825.37ms. Allocated memory is still 127.9MB. Free memory was 101.2MB in the beginning and 96.2MB in the end (delta: 5.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-23 14:18:51,312 INFO L158 Benchmark]: Witness Printer took 2.65ms. Allocated memory is still 127.9MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:51,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.17ms. Allocated memory is still 98.6MB. Free memory was 59.3MB in the beginning and 50.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.05ms. Allocated memory is still 98.6MB. Free memory was 50.6MB in the beginning and 49.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.80ms. Allocated memory is still 98.6MB. Free memory was 49.3MB in the beginning and 48.4MB in the end (delta: 860.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 241.30ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 48.3MB in the beginning and 101.2MB in the end (delta: -52.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 1825.37ms. Allocated memory is still 127.9MB. Free memory was 101.2MB in the beginning and 96.2MB in the end (delta: 5.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 2.65ms. Allocated memory is still 127.9MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 5 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 17 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:18:51,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:51,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE