./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/Parts.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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-numeric/Parts.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 663a2474dc11f7b5d0aa9a3ae9bbf5de1ab8d2ea5a060185a0446a8356edf6f1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:50:56,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:50:56,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:50:56,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:50:56,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:50:56,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:50:56,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:50:56,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:50:56,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:50:56,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:50:56,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:50:56,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:50:56,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:50:56,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:50:56,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:50:56,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:50:56,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:50:56,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:50:56,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:50:56,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:50:56,217 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:50:56,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:50:56,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:50:56,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:50:56,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:50:56,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:50:56,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:50:56,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:50:56,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:50:56,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:50:56,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:50:56,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:50:56,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:50:56,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:50:56,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:50:56,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:50:56,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:50:56,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:50:56,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:50:56,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:50:56,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:50:56,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:50:56,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 14:50:56,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:50:56,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:50:56,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:50:56,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:50:56,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:50:56,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:50:56,273 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:50:56,273 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 14:50:56,273 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 14:50:56,274 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 14:50:56,274 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 14:50:56,274 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 14:50:56,275 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 14:50:56,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:50:56,275 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:50:56,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:50:56,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:50:56,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 14:50:56,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 14:50:56,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 14:50:56,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:50:56,276 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 14:50:56,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:50:56,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 14:50:56,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:50:56,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:50:56,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:50:56,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:50:56,279 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 14:50:56,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 663a2474dc11f7b5d0aa9a3ae9bbf5de1ab8d2ea5a060185a0446a8356edf6f1 [2022-07-14 14:50:56,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:50:56,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:50:56,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:50:56,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:50:56,584 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:50:56,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Parts.c [2022-07-14 14:50:56,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327a7ec2c/6aac8973f7dc4dea8ccdd772b6eae9da/FLAG534c5236a [2022-07-14 14:50:57,005 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:50:57,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Parts.c [2022-07-14 14:50:57,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327a7ec2c/6aac8973f7dc4dea8ccdd772b6eae9da/FLAG534c5236a [2022-07-14 14:50:57,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327a7ec2c/6aac8973f7dc4dea8ccdd772b6eae9da [2022-07-14 14:50:57,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:50:57,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:50:57,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:50:57,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:50:57,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:50:57,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc01adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57, skipping insertion in model container [2022-07-14 14:50:57,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:50:57,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:50:57,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:50:57,567 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:50:57,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:50:57,588 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:50:57,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57 WrapperNode [2022-07-14 14:50:57,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:50:57,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:50:57,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:50:57,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:50:57,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,613 INFO L137 Inliner]: procedures = 5, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-07-14 14:50:57,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:50:57,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:50:57,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:50:57,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:50:57,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:50:57,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:50:57,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:50:57,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:50:57,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (1/1) ... [2022-07-14 14:50:57,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:57,665 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) [2022-07-14 14:50:57,673 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 [2022-07-14 14:50:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure parts [2022-07-14 14:50:57,709 INFO L138 BoogieDeclarations]: Found implementation of procedure parts [2022-07-14 14:50:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:50:57,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:50:57,760 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:50:57,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:50:57,876 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:50:57,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:50:57,883 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 14:50:57,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:50:57 BoogieIcfgContainer [2022-07-14 14:50:57,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:50:57,892 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 14:50:57,892 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 14:50:57,895 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 14:50:57,895 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:50:57,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 02:50:57" (1/3) ... [2022-07-14 14:50:57,896 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54ee46e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:50:57, skipping insertion in model container [2022-07-14 14:50:57,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:50:57,896 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:50:57" (2/3) ... [2022-07-14 14:50:57,897 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54ee46e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:50:57, skipping insertion in model container [2022-07-14 14:50:57,897 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:50:57,897 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:50:57" (3/3) ... [2022-07-14 14:50:57,898 INFO L354 chiAutomizerObserver]: Analyzing ICFG Parts.c [2022-07-14 14:50:57,945 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 14:50:57,945 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 14:50:57,945 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 14:50:57,945 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 14:50:57,945 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 14:50:57,945 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 14:50:57,946 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 14:50:57,946 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 14:50:57,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 14:50:57,982 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-07-14 14:50:57,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:50:57,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:50:57,987 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 14:50:57,988 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 14:50:57,988 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 14:50:57,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 14:50:57,991 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-07-14 14:50:57,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:50:57,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:50:57,992 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 14:50:57,992 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 14:50:57,998 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 18#L28true assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 8#L31true assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 25#L34-3true [2022-07-14 14:50:57,998 INFO L754 eck$LassoCheckResult]: Loop: 25#L34-3true assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 13#L35-3true assume !true; 12#L34-2true main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 25#L34-3true [2022-07-14 14:50:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:58,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1510568, now seen corresponding path program 1 times [2022-07-14 14:50:58,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:58,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776509156] [2022-07-14 14:50:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:58,086 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:50:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:58,103 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:50:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 68968, now seen corresponding path program 1 times [2022-07-14 14:50:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:58,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760909458] [2022-07-14 14:50:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:50:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:50:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:50:58,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760909458] [2022-07-14 14:50:58,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760909458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:50:58,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:50:58,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:50:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174379039] [2022-07-14 14:50:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:50:58,158 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:50:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:50:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 14:50:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 14:50:58,202 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:50:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:50:58,212 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2022-07-14 14:50:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 14:50:58,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2022-07-14 14:50:58,228 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-07-14 14:50:58,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 21 states and 28 transitions. [2022-07-14 14:50:58,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-07-14 14:50:58,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-07-14 14:50:58,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2022-07-14 14:50:58,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 14:50:58,239 INFO L369 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2022-07-14 14:50:58,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2022-07-14 14:50:58,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-14 14:50:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 14:50:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2022-07-14 14:50:58,259 INFO L392 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2022-07-14 14:50:58,259 INFO L374 stractBuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2022-07-14 14:50:58,260 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 14:50:58,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2022-07-14 14:50:58,260 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-07-14 14:50:58,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:50:58,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:50:58,261 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 14:50:58,261 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 14:50:58,261 INFO L752 eck$LassoCheckResult]: Stem: 66#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 67#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 70#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 68#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 69#L34-3 [2022-07-14 14:50:58,261 INFO L754 eck$LassoCheckResult]: Loop: 69#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 72#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 71#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 69#L34-3 [2022-07-14 14:50:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1510568, now seen corresponding path program 2 times [2022-07-14 14:50:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:58,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059383753] [2022-07-14 14:50:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:58,269 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:50:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:58,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:50:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 68720, now seen corresponding path program 1 times [2022-07-14 14:50:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:58,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401204429] [2022-07-14 14:50:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:58,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:58,281 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:50:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:58,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:50:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2051697257, now seen corresponding path program 1 times [2022-07-14 14:50:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:58,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198926020] [2022-07-14 14:50:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:50:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:50:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:50:58,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198926020] [2022-07-14 14:50:58,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198926020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:50:58,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:50:58,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:50:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196682543] [2022-07-14 14:50:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:50:58,396 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:50:58,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:50:58,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:50:58,399 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:50:58,399 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:50:58,399 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:58,399 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:50:58,399 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:50:58,400 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration2_Loop [2022-07-14 14:50:58,400 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:50:58,400 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:50:58,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:58,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:58,465 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:50:58,466 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:50:58,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:58,476 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) [2022-07-14 14:50:58,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:50:58,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:58,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-14 14:50:58,519 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 [2022-07-14 14:50:58,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:58,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:58,521 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) [2022-07-14 14:50:58,522 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 [2022-07-14 14:50:58,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:50:58,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:58,666 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:50:58,670 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 [2022-07-14 14:50:58,670 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:50:58,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:50:58,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:50:58,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:50:58,670 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:50:58,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:58,671 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:50:58,671 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:50:58,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration2_Loop [2022-07-14 14:50:58,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:50:58,671 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:50:58,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:58,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:58,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:50:58,732 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:50:58,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:58,735 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) [2022-07-14 14:50:58,744 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 [2022-07-14 14:50:58,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:50:58,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:50:58,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:50:58,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:50:58,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:50:58,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:50:58,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:50:58,763 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 [2022-07-14 14:50:58,771 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:50:58,782 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-07-14 14:50:58,782 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-14 14:50:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:58,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:58,787 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) [2022-07-14 14:50:58,792 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 [2022-07-14 14:50:58,792 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:50:58,792 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:50:58,793 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:50:58,793 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = -1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-07-14 14:50:58,818 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 [2022-07-14 14:50:58,821 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:50:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:50:58,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:50:58,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:50:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:50:58,893 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:50:58,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:50:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:50:58,955 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-14 14:50:58,956 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:50:59,008 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 39 transitions. Complement of second has 7 states. [2022-07-14 14:50:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 14:50:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:50:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2022-07-14 14:50:59,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-14 14:50:59,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:50:59,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 14:50:59,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:50:59,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-14 14:50:59,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:50:59,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 39 transitions. [2022-07-14 14:50:59,015 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-07-14 14:50:59,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 27 states and 37 transitions. [2022-07-14 14:50:59,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-07-14 14:50:59,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-07-14 14:50:59,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2022-07-14 14:50:59,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:50:59,018 INFO L369 hiAutomatonCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-07-14 14:50:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2022-07-14 14:50:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-07-14 14:50:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 20 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 14:50:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-07-14 14:50:59,023 INFO L392 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-07-14 14:50:59,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:50:59,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:50:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:50:59,024 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:50:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:50:59,047 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-07-14 14:50:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:50:59,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 32 transitions. [2022-07-14 14:50:59,049 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2022-07-14 14:50:59,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 31 transitions. [2022-07-14 14:50:59,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-07-14 14:50:59,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2022-07-14 14:50:59,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2022-07-14 14:50:59,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 14:50:59,052 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-07-14 14:50:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2022-07-14 14:50:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-07-14 14:50:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-14 14:50:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-07-14 14:50:59,055 INFO L392 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-07-14 14:50:59,055 INFO L374 stractBuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-07-14 14:50:59,055 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 14:50:59,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2022-07-14 14:50:59,056 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2022-07-14 14:50:59,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:50:59,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:50:59,057 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 14:50:59,057 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:50:59,057 INFO L752 eck$LassoCheckResult]: Stem: 218#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 222#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 220#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 221#L34-3 [2022-07-14 14:50:59,058 INFO L754 eck$LassoCheckResult]: Loop: 221#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 225#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 209#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 216#partsENTRY ~p := #in~p;~q := #in~q; 217#L20 assume ~p <= 0;#res := 1; 227#partsFINAL assume true; 208#partsEXIT >#68#return; 214#L36-1 havoc main_#t~ret8#1; 228#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 229#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 223#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 221#L34-3 [2022-07-14 14:50:59,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:59,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1510568, now seen corresponding path program 3 times [2022-07-14 14:50:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:59,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540423362] [2022-07-14 14:50:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:59,063 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:50:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:59,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:50:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash 523036987, now seen corresponding path program 1 times [2022-07-14 14:50:59,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:59,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500279801] [2022-07-14 14:50:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:59,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:59,076 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:50:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:59,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:50:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:50:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1398357556, now seen corresponding path program 1 times [2022-07-14 14:50:59,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:50:59,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174895853] [2022-07-14 14:50:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:50:59,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:50:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:59,095 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:50:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:50:59,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:50:59,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-14 14:50:59,302 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:50:59,302 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:50:59,302 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:50:59,302 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:50:59,302 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:50:59,302 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,303 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:50:59,303 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:50:59,303 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration3_Loop [2022-07-14 14:50:59,303 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:50:59,303 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:50:59,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:50:59,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:50:59,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,350 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) [2022-07-14 14:50:59,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:50:59,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:59,369 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 [2022-07-14 14:50:59,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:50:59,384 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:50:59,410 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 [2022-07-14 14:50:59,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,412 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) [2022-07-14 14:50:59,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:50:59,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:59,428 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 [2022-07-14 14:50:59,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:50:59,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret8#1=0} Honda state: {ULTIMATE.start_main_#t~ret8#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:50:59,461 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 [2022-07-14 14:50:59,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,463 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) [2022-07-14 14:50:59,467 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 [2022-07-14 14:50:59,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:50:59,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:59,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:50:59,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7#1=0} Honda state: {ULTIMATE.start_main_#t~post7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:50:59,517 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 [2022-07-14 14:50:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,519 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) [2022-07-14 14:50:59,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:50:59,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:59,536 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 [2022-07-14 14:50:59,586 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 [2022-07-14 14:50:59,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,587 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) [2022-07-14 14:50:59,589 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 [2022-07-14 14:50:59,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:50:59,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:50:59,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:50:59,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-14 14:50:59,761 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:50:59,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:50:59,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:50:59,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:50:59,761 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:50:59,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:50:59,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:50:59,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration3_Loop [2022-07-14 14:50:59,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:50:59,762 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:50:59,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:50:59,814 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:50:59,814 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:50:59,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,816 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) [2022-07-14 14:50:59,823 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 [2022-07-14 14:50:59,824 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 [2022-07-14 14:50:59,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:50:59,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:50:59,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:50:59,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:50:59,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:50:59,831 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:50:59,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:50:59,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:50:59,854 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 [2022-07-14 14:50:59,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,856 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) [2022-07-14 14:50:59,856 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 [2022-07-14 14:50:59,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 14:50:59,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:50:59,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:50:59,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:50:59,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:50:59,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:50:59,864 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:50:59,864 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:50:59,880 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:50:59,897 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 [2022-07-14 14:50:59,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,898 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) [2022-07-14 14:50:59,899 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 [2022-07-14 14:50:59,901 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 [2022-07-14 14:50:59,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:50:59,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:50:59,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:50:59,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:50:59,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:50:59,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:50:59,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:50:59,911 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:50:59,925 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-14 14:50:59,926 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:50:59,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:50:59,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:50:59,960 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) [2022-07-14 14:50:59,961 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 [2022-07-14 14:50:59,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:50:59,962 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:50:59,962 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:50:59,962 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = -2*ULTIMATE.start_main_~p~0#1 + 1 Supporting invariants [] [2022-07-14 14:50:59,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-14 14:50:59,978 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:50:59,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:00,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:51:00,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:00,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:00,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:00,141 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-14 14:51:00,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 9 Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:00,320 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 9. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 143 states and 212 transitions. Complement of second has 28 states. [2022-07-14 14:51:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 59 transitions. [2022-07-14 14:51:00,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 59 transitions. Stem has 4 letters. Loop has 11 letters. [2022-07-14 14:51:00,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:00,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 59 transitions. Stem has 15 letters. Loop has 11 letters. [2022-07-14 14:51:00,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:00,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 59 transitions. Stem has 4 letters. Loop has 22 letters. [2022-07-14 14:51:00,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:00,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 212 transitions. [2022-07-14 14:51:00,329 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2022-07-14 14:51:00,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 142 states and 211 transitions. [2022-07-14 14:51:00,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2022-07-14 14:51:00,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2022-07-14 14:51:00,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 211 transitions. [2022-07-14 14:51:00,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:00,335 INFO L369 hiAutomatonCegarLoop]: Abstraction has 142 states and 211 transitions. [2022-07-14 14:51:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 211 transitions. [2022-07-14 14:51:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 133. [2022-07-14 14:51:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 88 states have internal predecessors, (122), 28 states have call successors, (28), 8 states have call predecessors, (28), 12 states have return successors, (48), 36 states have call predecessors, (48), 28 states have call successors, (48) [2022-07-14 14:51:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 198 transitions. [2022-07-14 14:51:00,349 INFO L392 hiAutomatonCegarLoop]: Abstraction has 133 states and 198 transitions. [2022-07-14 14:51:00,349 INFO L374 stractBuchiCegarLoop]: Abstraction has 133 states and 198 transitions. [2022-07-14 14:51:00,350 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 14:51:00,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 133 states and 198 transitions. [2022-07-14 14:51:00,352 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2022-07-14 14:51:00,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:00,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:00,353 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 14:51:00,353 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:00,353 INFO L752 eck$LassoCheckResult]: Stem: 500#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 501#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 506#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 504#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 505#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 532#L35-3 [2022-07-14 14:51:00,353 INFO L754 eck$LassoCheckResult]: Loop: 532#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 534#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 539#partsENTRY ~p := #in~p;~q := #in~q; 552#L20 assume !(~p <= 0); 544#L21 assume ~q <= 0;#res := 0; 541#partsFINAL assume true; 538#partsEXIT >#68#return; 536#L36-1 havoc main_#t~ret8#1; 535#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 533#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 510#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 511#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 532#L35-3 [2022-07-14 14:51:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash 46827647, now seen corresponding path program 1 times [2022-07-14 14:51:00,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:00,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16773635] [2022-07-14 14:51:00,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:00,359 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:00,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:00,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1489423173, now seen corresponding path program 1 times [2022-07-14 14:51:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:00,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551250170] [2022-07-14 14:51:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 14:51:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:00,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551250170] [2022-07-14 14:51:00,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551250170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:51:00,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:51:00,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 14:51:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111068750] [2022-07-14 14:51:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:51:00,470 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:51:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 14:51:00,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-14 14:51:00,474 INFO L87 Difference]: Start difference. First operand 133 states and 198 transitions. cyclomatic complexity: 70 Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:00,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:00,726 INFO L93 Difference]: Finished difference Result 251 states and 420 transitions. [2022-07-14 14:51:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 14:51:00,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 251 states and 420 transitions. [2022-07-14 14:51:00,733 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 36 [2022-07-14 14:51:00,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 251 states to 245 states and 414 transitions. [2022-07-14 14:51:00,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 124 [2022-07-14 14:51:00,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 124 [2022-07-14 14:51:00,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 414 transitions. [2022-07-14 14:51:00,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:00,741 INFO L369 hiAutomatonCegarLoop]: Abstraction has 245 states and 414 transitions. [2022-07-14 14:51:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 414 transitions. [2022-07-14 14:51:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 214. [2022-07-14 14:51:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 144 states have (on average 1.2569444444444444) internal successors, (181), 144 states have internal predecessors, (181), 40 states have call successors, (40), 12 states have call predecessors, (40), 30 states have return successors, (146), 57 states have call predecessors, (146), 40 states have call successors, (146) [2022-07-14 14:51:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 367 transitions. [2022-07-14 14:51:00,772 INFO L392 hiAutomatonCegarLoop]: Abstraction has 214 states and 367 transitions. [2022-07-14 14:51:00,772 INFO L374 stractBuchiCegarLoop]: Abstraction has 214 states and 367 transitions. [2022-07-14 14:51:00,772 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 14:51:00,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 367 transitions. [2022-07-14 14:51:00,774 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 26 [2022-07-14 14:51:00,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:00,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:00,775 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 14:51:00,775 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:00,776 INFO L752 eck$LassoCheckResult]: Stem: 897#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 898#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 904#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 902#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 903#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 940#L35-3 [2022-07-14 14:51:00,776 INFO L754 eck$LassoCheckResult]: Loop: 940#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 926#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 947#partsENTRY ~p := #in~p;~q := #in~q; 988#L20 assume !(~p <= 0); 984#L21 assume ~q <= 0;#res := 0; 985#partsFINAL assume true; 1088#partsEXIT >#68#return; 1011#L36-1 havoc main_#t~ret8#1; 1007#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 940#L35-3 [2022-07-14 14:51:00,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 46827647, now seen corresponding path program 2 times [2022-07-14 14:51:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:00,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109105483] [2022-07-14 14:51:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:00,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:00,781 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:00,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1678232514, now seen corresponding path program 1 times [2022-07-14 14:51:00,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:00,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248641521] [2022-07-14 14:51:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:00,790 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:00,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash 616296708, now seen corresponding path program 1 times [2022-07-14 14:51:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:00,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374658623] [2022-07-14 14:51:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:00,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 14:51:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:00,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:00,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374658623] [2022-07-14 14:51:00,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374658623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:51:00,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:51:00,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 14:51:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725127128] [2022-07-14 14:51:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:51:00,907 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:00,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:00,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:00,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:00,908 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:00,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:00,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:00,908 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:00,908 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration5_Loop [2022-07-14 14:51:00,908 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:00,908 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:00,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:00,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:00,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:00,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:00,946 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:00,946 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:00,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:00,948 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) [2022-07-14 14:51:00,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:00,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:00,972 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 [2022-07-14 14:51:00,982 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:00,982 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~p~0#1=1} Honda state: {ULTIMATE.start_main_~p~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:00,998 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 [2022-07-14 14:51:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:00,999 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) [2022-07-14 14:51:01,000 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 [2022-07-14 14:51:01,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:01,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:01,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:01,007 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7#1=0} Honda state: {ULTIMATE.start_main_#t~post7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:01,024 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 [2022-07-14 14:51:01,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,026 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) [2022-07-14 14:51:01,027 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 [2022-07-14 14:51:01,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:01,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:01,050 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 [2022-07-14 14:51:01,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,052 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) [2022-07-14 14:51:01,052 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 [2022-07-14 14:51:01,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:01,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:01,080 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:01,083 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 [2022-07-14 14:51:01,083 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:01,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:01,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:01,084 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:01,084 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:01,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:01,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:01,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration5_Loop [2022-07-14 14:51:01,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:01,084 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:01,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,125 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:01,125 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:01,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,127 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) [2022-07-14 14:51:01,138 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 [2022-07-14 14:51:01,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:01,145 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:01,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:01,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:01,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:01,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:01,145 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:01,148 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 [2022-07-14 14:51:01,159 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:01,181 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 [2022-07-14 14:51:01,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,182 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:01,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-14 14:51:01,185 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 [2022-07-14 14:51:01,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:01,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:01,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:01,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:01,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:01,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:01,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:01,193 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:01,195 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:51:01,195 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:51:01,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,196 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:01,200 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:01,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:01,200 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:01,200 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = -2*ULTIMATE.start_main_~q~0#1 + 1 Supporting invariants [] [2022-07-14 14:51:01,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-14 14:51:01,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:01,224 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:01,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:51:01,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:01,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:01,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:01,341 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-14 14:51:01,342 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 367 transitions. cyclomatic complexity: 158 Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:01,482 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 367 transitions. cyclomatic complexity: 158. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 887 states and 1628 transitions. Complement of second has 25 states. [2022-07-14 14:51:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 39 transitions. [2022-07-14 14:51:01,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 39 transitions. Stem has 5 letters. Loop has 9 letters. [2022-07-14 14:51:01,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:01,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 39 transitions. Stem has 14 letters. Loop has 9 letters. [2022-07-14 14:51:01,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:01,488 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 39 transitions. Stem has 5 letters. Loop has 18 letters. [2022-07-14 14:51:01,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:01,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 887 states and 1628 transitions. [2022-07-14 14:51:01,534 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 58 [2022-07-14 14:51:01,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:01,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 887 states to 830 states and 1524 transitions. [2022-07-14 14:51:01,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 245 [2022-07-14 14:51:01,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 247 [2022-07-14 14:51:01,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 830 states and 1524 transitions. [2022-07-14 14:51:01,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:01,571 INFO L369 hiAutomatonCegarLoop]: Abstraction has 830 states and 1524 transitions. [2022-07-14 14:51:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states and 1524 transitions. [2022-07-14 14:51:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 758. [2022-07-14 14:51:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 490 states have (on average 1.2387755102040816) internal successors, (607), 491 states have internal predecessors, (607), 154 states have call successors, (154), 43 states have call predecessors, (154), 114 states have return successors, (650), 223 states have call predecessors, (650), 151 states have call successors, (650) [2022-07-14 14:51:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1411 transitions. [2022-07-14 14:51:01,647 INFO L392 hiAutomatonCegarLoop]: Abstraction has 758 states and 1411 transitions. [2022-07-14 14:51:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:51:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:51:01,649 INFO L87 Difference]: Start difference. First operand 758 states and 1411 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:01,707 INFO L93 Difference]: Finished difference Result 649 states and 994 transitions. [2022-07-14 14:51:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:51:01,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 649 states and 994 transitions. [2022-07-14 14:51:01,717 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 55 [2022-07-14 14:51:01,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 649 states to 312 states and 455 transitions. [2022-07-14 14:51:01,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 197 [2022-07-14 14:51:01,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 197 [2022-07-14 14:51:01,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 312 states and 455 transitions. [2022-07-14 14:51:01,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:01,724 INFO L369 hiAutomatonCegarLoop]: Abstraction has 312 states and 455 transitions. [2022-07-14 14:51:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states and 455 transitions. [2022-07-14 14:51:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 298. [2022-07-14 14:51:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 197 states have (on average 1.2385786802030456) internal successors, (244), 200 states have internal predecessors, (244), 69 states have call successors, (69), 27 states have call predecessors, (69), 32 states have return successors, (128), 70 states have call predecessors, (128), 61 states have call successors, (128) [2022-07-14 14:51:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 441 transitions. [2022-07-14 14:51:01,733 INFO L392 hiAutomatonCegarLoop]: Abstraction has 298 states and 441 transitions. [2022-07-14 14:51:01,733 INFO L374 stractBuchiCegarLoop]: Abstraction has 298 states and 441 transitions. [2022-07-14 14:51:01,733 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-14 14:51:01,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 298 states and 441 transitions. [2022-07-14 14:51:01,735 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 55 [2022-07-14 14:51:01,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:01,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:01,736 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:01,736 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:01,736 INFO L752 eck$LassoCheckResult]: Stem: 3503#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3504#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3512#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3509#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 3510#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 3520#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 3521#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 3764#partsENTRY ~p := #in~p;~q := #in~q; 3760#L20 assume ~p <= 0;#res := 1; 3761#partsFINAL assume true; 3701#partsEXIT >#68#return; 3542#L36-1 [2022-07-14 14:51:01,736 INFO L754 eck$LassoCheckResult]: Loop: 3542#L36-1 havoc main_#t~ret8#1; 3536#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 3537#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 3505#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 3511#partsENTRY ~p := #in~p;~q := #in~q; 3762#L20 assume ~p <= 0;#res := 1; 3763#partsFINAL assume true; 3765#partsEXIT >#68#return; 3542#L36-1 [2022-07-14 14:51:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash 618653416, now seen corresponding path program 1 times [2022-07-14 14:51:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:01,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668881053] [2022-07-14 14:51:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:01,758 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:01,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1411370316, now seen corresponding path program 1 times [2022-07-14 14:51:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254686262] [2022-07-14 14:51:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:01,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:01,772 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:01,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1870257459, now seen corresponding path program 1 times [2022-07-14 14:51:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629049811] [2022-07-14 14:51:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:01,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:01,796 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:01,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:01,883 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:01,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:01,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:01,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:01,883 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:01,883 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:01,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:01,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration6_Loop [2022-07-14 14:51:01,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:01,884 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:01,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:01,923 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:01,923 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:01,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,924 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:01,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-14 14:51:01,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:01,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:01,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:01,948 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret8#1=1} Honda state: {ULTIMATE.start_main_#t~ret8#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:01,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:01,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:01,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:01,975 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:01,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-14 14:51:01,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:01,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:02,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:02,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,026 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:02,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:02,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-14 14:51:02,266 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:02,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-07-14 14:51:02,270 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:02,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:02,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:02,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:02,270 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:02,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:02,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:02,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration6_Loop [2022-07-14 14:51:02,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:02,270 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:02,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,312 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:02,312 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:02,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,313 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,320 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 [2022-07-14 14:51:02,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:02,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:02,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:02,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:02,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:02,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:02,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:02,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-14 14:51:02,343 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:02,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:02,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,369 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,371 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 [2022-07-14 14:51:02,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:02,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:02,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:02,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:02,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:02,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:02,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:02,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-14 14:51:02,382 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:02,384 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:51:02,384 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:51:02,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,386 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-14 14:51:02,388 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:02,388 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:02,388 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:02,388 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~q~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-14 14:51:02,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:02,407 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:02,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:51:02,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:02,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:02,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:02,520 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-07-14 14:51:02,520 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 298 states and 441 transitions. cyclomatic complexity: 151 Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:02,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:02,622 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 298 states and 441 transitions. cyclomatic complexity: 151. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 441 states and 656 transitions. Complement of second has 13 states. [2022-07-14 14:51:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 48 transitions. [2022-07-14 14:51:02,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 48 transitions. Stem has 11 letters. Loop has 8 letters. [2022-07-14 14:51:02,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:02,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 48 transitions. Stem has 19 letters. Loop has 8 letters. [2022-07-14 14:51:02,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:02,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 48 transitions. Stem has 11 letters. Loop has 16 letters. [2022-07-14 14:51:02,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:02,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 441 states and 656 transitions. [2022-07-14 14:51:02,630 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 74 [2022-07-14 14:51:02,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 441 states to 356 states and 523 transitions. [2022-07-14 14:51:02,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2022-07-14 14:51:02,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2022-07-14 14:51:02,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 356 states and 523 transitions. [2022-07-14 14:51:02,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:02,634 INFO L369 hiAutomatonCegarLoop]: Abstraction has 356 states and 523 transitions. [2022-07-14 14:51:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states and 523 transitions. [2022-07-14 14:51:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2022-07-14 14:51:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 234 states have (on average 1.2179487179487178) internal successors, (285), 234 states have internal predecessors, (285), 81 states have call successors, (83), 34 states have call predecessors, (83), 39 states have return successors, (152), 85 states have call predecessors, (152), 71 states have call successors, (152) [2022-07-14 14:51:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 520 transitions. [2022-07-14 14:51:02,642 INFO L392 hiAutomatonCegarLoop]: Abstraction has 354 states and 520 transitions. [2022-07-14 14:51:02,642 INFO L374 stractBuchiCegarLoop]: Abstraction has 354 states and 520 transitions. [2022-07-14 14:51:02,642 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-14 14:51:02,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 354 states and 520 transitions. [2022-07-14 14:51:02,644 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 74 [2022-07-14 14:51:02,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:02,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:02,645 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:02,645 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-14 14:51:02,645 INFO L752 eck$LassoCheckResult]: Stem: 4339#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4340#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 4347#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 4345#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 4346#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 4389#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 4348#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 4349#partsENTRY ~p := #in~p;~q := #in~q; 4471#L20 assume !(~p <= 0); 4472#L21 assume !(~q <= 0); 4597#L22 assume ~q > ~p; 4579#L22-1 call #t~ret0 := parts(~p, ~p);< 4596#partsENTRY [2022-07-14 14:51:02,645 INFO L754 eck$LassoCheckResult]: Loop: 4596#partsENTRY ~p := #in~p;~q := #in~q; 4631#L20 assume !(~p <= 0); 4629#L21 assume !(~q <= 0); 4628#L22 assume ~q > ~p; 4582#L22-1 call #t~ret0 := parts(~p, ~p);< 4596#partsENTRY [2022-07-14 14:51:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1998405187, now seen corresponding path program 1 times [2022-07-14 14:51:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:02,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415958445] [2022-07-14 14:51:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:02,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:02,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415958445] [2022-07-14 14:51:02,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415958445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:51:02,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:51:02,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 14:51:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659863591] [2022-07-14 14:51:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:51:02,682 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:51:02,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash 28756405, now seen corresponding path program 1 times [2022-07-14 14:51:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:02,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810587050] [2022-07-14 14:51:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:02,694 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:02,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:02,754 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:02,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:02,754 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:02,754 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:02,754 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:02,754 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:02,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:02,755 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration7_Loop [2022-07-14 14:51:02,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:02,755 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:02,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:02,813 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:02,814 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:02,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,815 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-14 14:51:02,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:02,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:02,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:02,840 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_~q=0} Honda state: {parts_~q=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:02,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:02,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,867 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:02,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:02,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-14 14:51:02,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:02,924 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:02,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-14 14:51:02,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:02,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:03,039 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:03,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-07-14 14:51:03,043 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:03,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:03,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:03,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:03,043 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:03,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:03,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:03,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration7_Loop [2022-07-14 14:51:03,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:03,044 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:03,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,101 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:03,101 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:03,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,103 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-14 14:51:03,104 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 [2022-07-14 14:51:03,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:03,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:03,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:03,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:03,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:03,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:03,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:03,119 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:03,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-14 14:51:03,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,135 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-14 14:51:03,137 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 [2022-07-14 14:51:03,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:03,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:03,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:03,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:03,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:03,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:03,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:03,145 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:03,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-07-14 14:51:03,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,161 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-14 14:51:03,163 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 [2022-07-14 14:51:03,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:03,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:03,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:03,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:03,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:03,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:03,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:03,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:03,177 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-14 14:51:03,177 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:51:03,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,179 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-14 14:51:03,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:03,180 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:03,180 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:03,180 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(parts_#in~q) = 1*parts_#in~q Supporting invariants [] [2022-07-14 14:51:03,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-07-14 14:51:03,195 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:03,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:03,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:03,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:03,296 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-07-14 14:51:03,296 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 354 states and 520 transitions. cyclomatic complexity: 175 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:51:03,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 354 states and 520 transitions. cyclomatic complexity: 175. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1097 states and 1995 transitions. Complement of second has 41 states. [2022-07-14 14:51:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:51:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 41 transitions. [2022-07-14 14:51:03,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 41 transitions. Stem has 12 letters. Loop has 5 letters. [2022-07-14 14:51:03,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:03,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 41 transitions. Stem has 17 letters. Loop has 5 letters. [2022-07-14 14:51:03,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:03,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 41 transitions. Stem has 12 letters. Loop has 10 letters. [2022-07-14 14:51:03,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:03,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1097 states and 1995 transitions. [2022-07-14 14:51:03,397 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 218 [2022-07-14 14:51:03,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1097 states to 1016 states and 1851 transitions. [2022-07-14 14:51:03,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 550 [2022-07-14 14:51:03,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 558 [2022-07-14 14:51:03,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1016 states and 1851 transitions. [2022-07-14 14:51:03,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:03,414 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1016 states and 1851 transitions. [2022-07-14 14:51:03,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states and 1851 transitions. [2022-07-14 14:51:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 911. [2022-07-14 14:51:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 589 states have (on average 1.2393887945670627) internal successors, (730), 621 states have internal predecessors, (730), 228 states have call successors, (230), 98 states have call predecessors, (230), 94 states have return successors, (613), 191 states have call predecessors, (613), 203 states have call successors, (613) [2022-07-14 14:51:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1573 transitions. [2022-07-14 14:51:03,468 INFO L392 hiAutomatonCegarLoop]: Abstraction has 911 states and 1573 transitions. [2022-07-14 14:51:03,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:51:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:51:03,468 INFO L87 Difference]: Start difference. First operand 911 states and 1573 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:51:03,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:03,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:03,506 INFO L93 Difference]: Finished difference Result 546 states and 873 transitions. [2022-07-14 14:51:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:51:03,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 546 states and 873 transitions. [2022-07-14 14:51:03,513 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 70 [2022-07-14 14:51:03,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 546 states to 529 states and 855 transitions. [2022-07-14 14:51:03,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2022-07-14 14:51:03,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2022-07-14 14:51:03,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 529 states and 855 transitions. [2022-07-14 14:51:03,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:03,520 INFO L369 hiAutomatonCegarLoop]: Abstraction has 529 states and 855 transitions. [2022-07-14 14:51:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states and 855 transitions. [2022-07-14 14:51:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 524. [2022-07-14 14:51:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 353 states have (on average 1.2492917847025495) internal successors, (441), 370 states have internal predecessors, (441), 114 states have call successors, (115), 52 states have call predecessors, (115), 57 states have return successors, (294), 101 states have call predecessors, (294), 112 states have call successors, (294) [2022-07-14 14:51:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 850 transitions. [2022-07-14 14:51:03,535 INFO L392 hiAutomatonCegarLoop]: Abstraction has 524 states and 850 transitions. [2022-07-14 14:51:03,535 INFO L374 stractBuchiCegarLoop]: Abstraction has 524 states and 850 transitions. [2022-07-14 14:51:03,535 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-14 14:51:03,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 524 states and 850 transitions. [2022-07-14 14:51:03,538 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 70 [2022-07-14 14:51:03,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:03,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:03,539 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:03,539 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:03,539 INFO L752 eck$LassoCheckResult]: Stem: 7367#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 7368#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 7383#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 7381#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 7382#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 7405#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 7406#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 7848#partsENTRY ~p := #in~p;~q := #in~q; 7851#L20 assume ~p <= 0;#res := 1; 7849#partsFINAL assume true; 7847#partsEXIT >#68#return; 7846#L36-1 havoc main_#t~ret8#1; 7672#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 7670#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 7600#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 7599#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 7433#L35-3 [2022-07-14 14:51:03,539 INFO L754 eck$LassoCheckResult]: Loop: 7433#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 7466#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 7567#partsENTRY ~p := #in~p;~q := #in~q; 7628#L20 assume !(~p <= 0); 7629#L21 assume ~q <= 0;#res := 0; 7631#partsFINAL assume true; 7630#partsEXIT >#68#return; 7453#L36-1 havoc main_#t~ret8#1; 7432#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 7433#L35-3 [2022-07-14 14:51:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash 399411315, now seen corresponding path program 2 times [2022-07-14 14:51:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:03,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892498667] [2022-07-14 14:51:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 14:51:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:03,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892498667] [2022-07-14 14:51:03,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892498667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:51:03,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270514285] [2022-07-14 14:51:03,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:51:03,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:51:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,588 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-14 14:51:03,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:51:03,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:51:03,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:03,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:03,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:51:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:03,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270514285] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:51:03,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:51:03,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-07-14 14:51:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232069269] [2022-07-14 14:51:03,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:51:03,691 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:51:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:03,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1678232514, now seen corresponding path program 2 times [2022-07-14 14:51:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:03,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403454565] [2022-07-14 14:51:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:03,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:03,694 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:03,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:03,758 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:03,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:03,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:03,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:03,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:03,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:03,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:03,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration8_Loop [2022-07-14 14:51:03,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:03,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:03,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:03,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:03,785 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:03,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,787 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:03,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:03,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-07-14 14:51:03,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:03,824 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~p~0#1=1} Honda state: {ULTIMATE.start_main_~p~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:03,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:03,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,850 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-07-14 14:51:03,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:03,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:03,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:03,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7#1=0} Honda state: {ULTIMATE.start_main_#t~post7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:03,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:03,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,901 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:03,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:03,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-07-14 14:51:03,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:03,931 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret8#1=0} Honda state: {ULTIMATE.start_main_#t~ret8#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:03,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:03,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:03,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:03,957 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:03,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:03,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:03,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-07-14 14:51:04,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:04,007 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:04,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:04,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:04,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-07-14 14:51:04,059 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:04,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,064 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:04,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:04,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:04,064 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:04,064 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:04,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:04,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:04,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration8_Loop [2022-07-14 14:51:04,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:04,065 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:04,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:04,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:04,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:04,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:04,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:04,094 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:04,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:04,095 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:04,100 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 [2022-07-14 14:51:04,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:04,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:04,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:04,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:04,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:04,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:04,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:04,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-07-14 14:51:04,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:04,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:04,151 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:04,155 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 [2022-07-14 14:51:04,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:04,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:04,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:04,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:04,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:04,164 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:04,164 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:04,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-07-14 14:51:04,179 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:04,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:04,204 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:51:04,207 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 [2022-07-14 14:51:04,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:04,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:04,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:04,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:04,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:04,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-07-14 14:51:04,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:04,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:04,231 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:04,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:04,252 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2022-07-14 14:51:04,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-07-14 14:51:04,254 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 [2022-07-14 14:51:04,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:04,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:04,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:04,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:04,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:04,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:04,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:04,275 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:04,291 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:51:04,292 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:51:04,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:04,299 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2022-07-14 14:51:04,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-07-14 14:51:04,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:04,305 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:04,305 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:04,305 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = -2*ULTIMATE.start_main_~q~0#1 + 1 Supporting invariants [] [2022-07-14 14:51:04,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,330 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:04,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:51:04,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:04,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:04,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:04,470 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-14 14:51:04,470 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 524 states and 850 transitions. cyclomatic complexity: 341 Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:04,503 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 524 states and 850 transitions. cyclomatic complexity: 341. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 549 states and 878 transitions. Complement of second has 9 states. [2022-07-14 14:51:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2022-07-14 14:51:04,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 16 letters. Loop has 9 letters. [2022-07-14 14:51:04,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:04,514 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:51:04,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:04,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:51:04,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:04,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:04,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:04,653 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-14 14:51:04,653 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 524 states and 850 transitions. cyclomatic complexity: 341 Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:04,678 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 524 states and 850 transitions. cyclomatic complexity: 341. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 549 states and 878 transitions. Complement of second has 9 states. [2022-07-14 14:51:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2022-07-14 14:51:04,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 16 letters. Loop has 9 letters. [2022-07-14 14:51:04,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:04,680 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:51:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:04,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:51:04,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:04,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:04,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:04,811 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-14 14:51:04,811 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 524 states and 850 transitions. cyclomatic complexity: 341 Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:04,942 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 524 states and 850 transitions. cyclomatic complexity: 341. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 1496 states and 2733 transitions. Complement of second has 24 states. [2022-07-14 14:51:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 63 transitions. [2022-07-14 14:51:04,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 63 transitions. Stem has 16 letters. Loop has 9 letters. [2022-07-14 14:51:04,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:04,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 63 transitions. Stem has 25 letters. Loop has 9 letters. [2022-07-14 14:51:04,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:04,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 63 transitions. Stem has 16 letters. Loop has 18 letters. [2022-07-14 14:51:04,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:04,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1496 states and 2733 transitions. [2022-07-14 14:51:04,960 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 118 [2022-07-14 14:51:04,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1496 states to 1379 states and 2526 transitions. [2022-07-14 14:51:04,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 288 [2022-07-14 14:51:04,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 292 [2022-07-14 14:51:04,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1379 states and 2526 transitions. [2022-07-14 14:51:04,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:04,984 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1379 states and 2526 transitions. [2022-07-14 14:51:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states and 2526 transitions. [2022-07-14 14:51:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1298. [2022-07-14 14:51:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 831 states have (on average 1.2214199759326112) internal successors, (1015), 868 states have internal predecessors, (1015), 322 states have call successors, (323), 122 states have call predecessors, (323), 145 states have return successors, (1031), 307 states have call predecessors, (1031), 314 states have call successors, (1031) [2022-07-14 14:51:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 2369 transitions. [2022-07-14 14:51:05,027 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1298 states and 2369 transitions. [2022-07-14 14:51:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 14:51:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-14 14:51:05,028 INFO L87 Difference]: Start difference. First operand 1298 states and 2369 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:05,125 INFO L93 Difference]: Finished difference Result 1477 states and 2646 transitions. [2022-07-14 14:51:05,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:51:05,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1477 states and 2646 transitions. [2022-07-14 14:51:05,142 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 158 [2022-07-14 14:51:05,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1477 states to 1463 states and 2631 transitions. [2022-07-14 14:51:05,164 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 316 [2022-07-14 14:51:05,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 316 [2022-07-14 14:51:05,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1463 states and 2631 transitions. [2022-07-14 14:51:05,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:05,165 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1463 states and 2631 transitions. [2022-07-14 14:51:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states and 2631 transitions. [2022-07-14 14:51:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1303. [2022-07-14 14:51:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 832 states have (on average 1.2223557692307692) internal successors, (1017), 874 states have internal predecessors, (1017), 326 states have call successors, (327), 122 states have call predecessors, (327), 145 states have return successors, (1047), 306 states have call predecessors, (1047), 318 states have call successors, (1047) [2022-07-14 14:51:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 2391 transitions. [2022-07-14 14:51:05,216 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1303 states and 2391 transitions. [2022-07-14 14:51:05,216 INFO L374 stractBuchiCegarLoop]: Abstraction has 1303 states and 2391 transitions. [2022-07-14 14:51:05,216 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-14 14:51:05,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1303 states and 2391 transitions. [2022-07-14 14:51:05,225 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 112 [2022-07-14 14:51:05,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:05,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:05,228 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:05,228 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-07-14 14:51:05,229 INFO L752 eck$LassoCheckResult]: Stem: 13676#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 13677#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 13691#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 13685#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 13686#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 13746#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 14625#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 14626#partsENTRY ~p := #in~p;~q := #in~q; 14633#L20 assume ~p <= 0;#res := 1; 14632#partsFINAL assume true; 14624#partsEXIT >#68#return; 14620#L36-1 havoc main_#t~ret8#1; 14540#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 14525#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 14514#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 14515#partsENTRY ~p := #in~p;~q := #in~q; 14518#L20 assume ~p <= 0;#res := 1; 14517#partsFINAL assume true; 14513#partsEXIT >#68#return; 14512#L36-1 havoc main_#t~ret8#1; 14511#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 13997#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 13955#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 13956#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 13982#L35-3 [2022-07-14 14:51:05,230 INFO L754 eck$LassoCheckResult]: Loop: 13982#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 13668#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 13759#partsENTRY ~p := #in~p;~q := #in~q; 13743#L20 assume !(~p <= 0); 13711#L21 assume !(~q <= 0); 13712#L22 assume !(~q > ~p); 13794#L23 call #t~ret1 := parts(~p - ~q, ~q);< 13971#partsENTRY ~p := #in~p;~q := #in~q; 13993#L20 assume !(~p <= 0); 13994#L21 assume !(~q <= 0); 14025#L22 assume !(~q > ~p); 13778#L23 call #t~ret1 := parts(~p - ~q, ~q);< 13971#partsENTRY ~p := #in~p;~q := #in~q; 13993#L20 assume ~p <= 0;#res := 1; 13989#partsFINAL assume true; 13970#partsEXIT >#64#return; 13773#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 13967#partsENTRY ~p := #in~p;~q := #in~q; 14030#L20 assume !(~p <= 0); 13994#L21 assume ~q <= 0;#res := 0; 14027#partsFINAL assume true; 13957#partsEXIT >#66#return; 13963#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 14321#partsFINAL assume true; 14299#partsEXIT >#64#return; 13835#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 13680#partsENTRY ~p := #in~p;~q := #in~q; 14317#L20 assume !(~p <= 0); 14315#L21 assume ~q <= 0;#res := 0; 14027#partsFINAL assume true; 13957#partsEXIT >#66#return; 13728#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 13729#partsFINAL assume true; 14645#partsEXIT >#68#return; 13758#L36-1 havoc main_#t~ret8#1; 14647#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 14001#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 13667#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 13759#partsENTRY ~p := #in~p;~q := #in~q; 13743#L20 assume !(~p <= 0); 13711#L21 assume !(~q <= 0); 13712#L22 assume !(~q > ~p); 13794#L23 call #t~ret1 := parts(~p - ~q, ~q);< 13971#partsENTRY ~p := #in~p;~q := #in~q; 13993#L20 assume ~p <= 0;#res := 1; 13989#partsFINAL assume true; 13970#partsEXIT >#64#return; 13776#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 13967#partsENTRY ~p := #in~p;~q := #in~q; 14030#L20 assume !(~p <= 0); 13994#L21 assume ~q <= 0;#res := 0; 14027#partsFINAL assume true; 13957#partsEXIT >#66#return; 13762#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 13763#partsFINAL assume true; 13757#partsEXIT >#68#return; 13753#L36-1 havoc main_#t~ret8#1; 13754#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 13749#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 13750#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 13983#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 13982#L35-3 [2022-07-14 14:51:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash -856045304, now seen corresponding path program 3 times [2022-07-14 14:51:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:05,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805191050] [2022-07-14 14:51:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:05,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:05,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash 144582960, now seen corresponding path program 1 times [2022-07-14 14:51:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176432014] [2022-07-14 14:51:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 14:51:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 14:51:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-14 14:51:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 14:51:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:05,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176432014] [2022-07-14 14:51:05,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176432014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:51:05,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930350333] [2022-07-14 14:51:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:05,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:51:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:05,434 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:51:05,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-07-14 14:51:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:05,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 14:51:05,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 27 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 14:51:05,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:51:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 55 proven. 29 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-14 14:51:05,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930350333] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:51:05,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:51:05,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 10] total 23 [2022-07-14 14:51:05,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11476360] [2022-07-14 14:51:05,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:51:05,776 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:51:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-14 14:51:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-14 14:51:05,778 INFO L87 Difference]: Start difference. First operand 1303 states and 2391 transitions. cyclomatic complexity: 1113 Second operand has 23 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 11 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-07-14 14:51:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:06,520 INFO L93 Difference]: Finished difference Result 2270 states and 4654 transitions. [2022-07-14 14:51:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-14 14:51:06,521 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2270 states and 4654 transitions. [2022-07-14 14:51:06,545 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 165 [2022-07-14 14:51:06,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2270 states to 1211 states and 2330 transitions. [2022-07-14 14:51:06,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 524 [2022-07-14 14:51:06,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 528 [2022-07-14 14:51:06,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1211 states and 2330 transitions. [2022-07-14 14:51:06,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:06,584 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1211 states and 2330 transitions. [2022-07-14 14:51:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states and 2330 transitions. [2022-07-14 14:51:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1117. [2022-07-14 14:51:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 758 states have (on average 1.1794195250659631) internal successors, (894), 798 states have internal predecessors, (894), 220 states have call successors, (221), 105 states have call predecessors, (221), 139 states have return successors, (936), 213 states have call predecessors, (936), 220 states have call successors, (936) [2022-07-14 14:51:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2051 transitions. [2022-07-14 14:51:06,622 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1117 states and 2051 transitions. [2022-07-14 14:51:06,622 INFO L374 stractBuchiCegarLoop]: Abstraction has 1117 states and 2051 transitions. [2022-07-14 14:51:06,623 INFO L287 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-07-14 14:51:06,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1117 states and 2051 transitions. [2022-07-14 14:51:06,629 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 157 [2022-07-14 14:51:06,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:06,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:06,630 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:06,630 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:06,630 INFO L752 eck$LassoCheckResult]: Stem: 17767#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 17768#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 17780#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 17775#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 17776#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 18347#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 18343#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 18344#partsENTRY ~p := #in~p;~q := #in~q; 18349#L20 assume ~p <= 0;#res := 1; 18346#partsFINAL assume true; 18342#partsEXIT >#68#return; 18340#L36-1 havoc main_#t~ret8#1; 18339#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 18337#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 18333#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 18334#partsENTRY ~p := #in~p;~q := #in~q; 18338#L20 assume ~p <= 0;#res := 1; 18336#partsFINAL assume true; 18332#partsEXIT >#68#return; 18330#L36-1 havoc main_#t~ret8#1; 18329#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 18326#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 17788#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 17789#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 18391#L35-3 [2022-07-14 14:51:06,631 INFO L754 eck$LassoCheckResult]: Loop: 18391#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 18529#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 18546#partsENTRY ~p := #in~p;~q := #in~q; 18549#L20 assume !(~p <= 0); 18550#L21 assume ~q <= 0;#res := 0; 18554#partsFINAL assume true; 18553#partsEXIT >#68#return; 18552#L36-1 havoc main_#t~ret8#1; 18551#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 18548#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 17838#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 18527#partsENTRY ~p := #in~p;~q := #in~q; 18541#L20 assume !(~p <= 0); 18542#L21 assume !(~q <= 0); 18585#L22 assume !(~q > ~p); 18438#L23 call #t~ret1 := parts(~p - ~q, ~q);< 18450#partsENTRY ~p := #in~p;~q := #in~q; 18599#L20 assume ~p <= 0;#res := 1; 18613#partsFINAL assume true; 18612#partsEXIT >#64#return; 18434#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 18611#partsENTRY ~p := #in~p;~q := #in~q; 18587#L20 assume !(~p <= 0); 18588#L21 assume ~q <= 0;#res := 0; 18738#partsFINAL assume true; 18723#partsEXIT >#66#return; 18635#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 18636#partsFINAL assume true; 18606#partsEXIT >#68#return; 18559#L36-1 havoc main_#t~ret8#1; 18537#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 18536#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 18533#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 18531#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 18391#L35-3 [2022-07-14 14:51:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash -856045304, now seen corresponding path program 4 times [2022-07-14 14:51:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:06,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533646887] [2022-07-14 14:51:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:06,637 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:06,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:06,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1754826426, now seen corresponding path program 2 times [2022-07-14 14:51:06,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:06,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845452375] [2022-07-14 14:51:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:06,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 14:51:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 14:51:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-14 14:51:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845452375] [2022-07-14 14:51:06,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845452375] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:51:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082445571] [2022-07-14 14:51:06,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:51:06,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:51:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:06,712 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:51:06,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-07-14 14:51:06,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:51:06,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:51:06,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 14:51:06,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-14 14:51:06,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:51:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-14 14:51:06,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082445571] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:51:06,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:51:06,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-14 14:51:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089501189] [2022-07-14 14:51:06,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:51:06,988 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:51:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 14:51:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-07-14 14:51:06,989 INFO L87 Difference]: Start difference. First operand 1117 states and 2051 transitions. cyclomatic complexity: 967 Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 20 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 14:51:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:07,412 INFO L93 Difference]: Finished difference Result 1391 states and 2538 transitions. [2022-07-14 14:51:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 14:51:07,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1391 states and 2538 transitions. [2022-07-14 14:51:07,429 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 241 [2022-07-14 14:51:07,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1391 states to 1371 states and 2512 transitions. [2022-07-14 14:51:07,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 614 [2022-07-14 14:51:07,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 614 [2022-07-14 14:51:07,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1371 states and 2512 transitions. [2022-07-14 14:51:07,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:07,448 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1371 states and 2512 transitions. [2022-07-14 14:51:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states and 2512 transitions. [2022-07-14 14:51:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1133. [2022-07-14 14:51:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 774 states have (on average 1.17312661498708) internal successors, (908), 808 states have internal predecessors, (908), 220 states have call successors, (221), 105 states have call predecessors, (221), 139 states have return successors, (932), 219 states have call predecessors, (932), 220 states have call successors, (932) [2022-07-14 14:51:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 2061 transitions. [2022-07-14 14:51:07,488 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1133 states and 2061 transitions. [2022-07-14 14:51:07,488 INFO L374 stractBuchiCegarLoop]: Abstraction has 1133 states and 2061 transitions. [2022-07-14 14:51:07,488 INFO L287 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-07-14 14:51:07,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1133 states and 2061 transitions. [2022-07-14 14:51:07,495 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 161 [2022-07-14 14:51:07,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:07,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:07,496 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:07,496 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-07-14 14:51:07,496 INFO L752 eck$LassoCheckResult]: Stem: 20550#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 20551#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 20561#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 20557#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 20558#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 21145#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 21140#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 21142#partsENTRY ~p := #in~p;~q := #in~q; 21146#L20 assume ~p <= 0;#res := 1; 21143#partsFINAL assume true; 21139#partsEXIT >#68#return; 21138#L36-1 havoc main_#t~ret8#1; 21137#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 21134#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 21130#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 21131#partsENTRY ~p := #in~p;~q := #in~q; 21135#L20 assume ~p <= 0;#res := 1; 21133#partsFINAL assume true; 21129#partsEXIT >#68#return; 21128#L36-1 havoc main_#t~ret8#1; 21127#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 21126#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 21049#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 21121#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 21521#L35-3 [2022-07-14 14:51:07,496 INFO L754 eck$LassoCheckResult]: Loop: 21521#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 21315#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 21470#partsENTRY ~p := #in~p;~q := #in~q; 21456#L20 assume !(~p <= 0); 21455#L21 assume !(~q <= 0); 21398#L22 assume !(~q > ~p); 21253#L23 call #t~ret1 := parts(~p - ~q, ~q);< 21329#partsENTRY ~p := #in~p;~q := #in~q; 21332#L20 assume ~p <= 0;#res := 1; 21330#partsFINAL assume true; 21328#partsEXIT >#64#return; 21252#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 21349#partsENTRY ~p := #in~p;~q := #in~q; 21285#L20 assume !(~p <= 0); 21286#L21 assume !(~q <= 0); 21275#L22 assume !(~q > ~p); 21254#L23 call #t~ret1 := parts(~p - ~q, ~q);< 21329#partsENTRY ~p := #in~p;~q := #in~q; 21332#L20 assume ~p <= 0;#res := 1; 21330#partsFINAL assume true; 21328#partsEXIT >#64#return; 21250#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 21349#partsENTRY ~p := #in~p;~q := #in~q; 21285#L20 assume !(~p <= 0); 21286#L21 assume ~q <= 0;#res := 0; 21499#partsFINAL assume true; 21496#partsEXIT >#66#return; 21495#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 21492#partsFINAL assume true; 21488#partsEXIT >#66#return; 21448#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 21532#partsFINAL assume true; 21530#partsEXIT >#68#return; 21531#L36-1 havoc main_#t~ret8#1; 21529#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 21509#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 21314#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 21466#partsENTRY ~p := #in~p;~q := #in~q; 21467#L20 assume !(~p <= 0); 21455#L21 assume !(~q <= 0); 21398#L22 assume !(~q > ~p); 21253#L23 call #t~ret1 := parts(~p - ~q, ~q);< 21329#partsENTRY ~p := #in~p;~q := #in~q; 21332#L20 assume ~p <= 0;#res := 1; 21330#partsFINAL assume true; 21328#partsEXIT >#64#return; 21252#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 21349#partsENTRY ~p := #in~p;~q := #in~q; 21285#L20 assume !(~p <= 0); 21286#L21 assume !(~q <= 0); 21275#L22 assume !(~q > ~p); 21254#L23 call #t~ret1 := parts(~p - ~q, ~q);< 21329#partsENTRY ~p := #in~p;~q := #in~q; 21332#L20 assume ~p <= 0;#res := 1; 21330#partsFINAL assume true; 21328#partsEXIT >#64#return; 21250#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 21349#partsENTRY ~p := #in~p;~q := #in~q; 21285#L20 assume !(~p <= 0); 21286#L21 assume ~q <= 0;#res := 0; 21499#partsFINAL assume true; 21496#partsEXIT >#66#return; 21495#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 21492#partsFINAL assume true; 21488#partsEXIT >#66#return; 21448#L23-2 #res := #t~ret1 + #t~ret2;havoc #t~ret1;havoc #t~ret2; 21532#partsFINAL assume true; 21530#partsEXIT >#68#return; 21528#L36-1 havoc main_#t~ret8#1; 21513#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 21510#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 21511#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 21522#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 21521#L35-3 [2022-07-14 14:51:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash -856045304, now seen corresponding path program 5 times [2022-07-14 14:51:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:07,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614018738] [2022-07-14 14:51:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:07,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:07,502 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:07,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1918357508, now seen corresponding path program 3 times [2022-07-14 14:51:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:07,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309834841] [2022-07-14 14:51:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 14:51:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-14 14:51:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 14:51:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 14:51:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 75 proven. 55 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-14 14:51:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:07,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309834841] [2022-07-14 14:51:07,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309834841] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:51:07,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696395945] [2022-07-14 14:51:07,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 14:51:07,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:51:07,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:07,671 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:51:07,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-07-14 14:51:07,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-14 14:51:07,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:51:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 14:51:07,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-14 14:51:07,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:51:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-14 14:51:07,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696395945] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:51:07,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:51:07,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2022-07-14 14:51:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497400823] [2022-07-14 14:51:07,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:51:07,920 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:51:07,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:07,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 14:51:07,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-14 14:51:07,921 INFO L87 Difference]: Start difference. First operand 1133 states and 2061 transitions. cyclomatic complexity: 961 Second operand has 16 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 6 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-14 14:51:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:08,285 INFO L93 Difference]: Finished difference Result 1232 states and 2045 transitions. [2022-07-14 14:51:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 14:51:08,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1232 states and 2045 transitions. [2022-07-14 14:51:08,296 INFO L131 ngComponentsAnalysis]: Automaton has 15 accepting balls. 166 [2022-07-14 14:51:08,307 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1232 states to 1178 states and 1929 transitions. [2022-07-14 14:51:08,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 524 [2022-07-14 14:51:08,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 524 [2022-07-14 14:51:08,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1178 states and 1929 transitions. [2022-07-14 14:51:08,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:08,309 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1178 states and 1929 transitions. [2022-07-14 14:51:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states and 1929 transitions. [2022-07-14 14:51:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1050. [2022-07-14 14:51:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 730 states have (on average 1.1479452054794521) internal successors, (838), 764 states have internal predecessors, (838), 188 states have call successors, (189), 106 states have call predecessors, (189), 132 states have return successors, (640), 179 states have call predecessors, (640), 186 states have call successors, (640) [2022-07-14 14:51:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1667 transitions. [2022-07-14 14:51:08,337 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1050 states and 1667 transitions. [2022-07-14 14:51:08,337 INFO L374 stractBuchiCegarLoop]: Abstraction has 1050 states and 1667 transitions. [2022-07-14 14:51:08,338 INFO L287 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-07-14 14:51:08,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1050 states and 1667 transitions. [2022-07-14 14:51:08,343 INFO L131 ngComponentsAnalysis]: Automaton has 14 accepting balls. 133 [2022-07-14 14:51:08,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:08,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:08,343 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:08,344 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:08,344 INFO L752 eck$LassoCheckResult]: Stem: 23524#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 23525#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 23538#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 23534#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 23535#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 24043#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 24041#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 24042#partsENTRY ~p := #in~p;~q := #in~q; 24048#L20 assume ~p <= 0;#res := 1; 24046#partsFINAL assume true; 24040#partsEXIT >#68#return; 24036#L36-1 havoc main_#t~ret8#1; 24034#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 24032#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 24026#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 24027#partsENTRY ~p := #in~p;~q := #in~q; 24031#L20 assume ~p <= 0;#res := 1; 24030#partsFINAL assume true; 24025#partsEXIT >#68#return; 24022#L36-1 havoc main_#t~ret8#1; 24019#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 23802#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 23801#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 23799#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 23800#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 23503#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 24261#partsENTRY ~p := #in~p;~q := #in~q; 24345#L20 assume ~p <= 0;#res := 1; 24344#partsFINAL assume true; 24343#partsEXIT >#68#return; 24341#L36-1 [2022-07-14 14:51:08,344 INFO L754 eck$LassoCheckResult]: Loop: 24341#L36-1 havoc main_#t~ret8#1; 24340#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 24337#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 23528#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 24335#partsENTRY ~p := #in~p;~q := #in~q; 24353#L20 assume ~p <= 0;#res := 1; 24350#partsFINAL assume true; 24342#partsEXIT >#68#return; 24341#L36-1 [2022-07-14 14:51:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash 768924849, now seen corresponding path program 6 times [2022-07-14 14:51:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:08,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412503367] [2022-07-14 14:51:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 14:51:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 14:51:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 14:51:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 14:51:08,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:08,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412503367] [2022-07-14 14:51:08,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412503367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:51:08,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:51:08,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 14:51:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17143871] [2022-07-14 14:51:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:51:08,381 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:51:08,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1411370316, now seen corresponding path program 2 times [2022-07-14 14:51:08,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:08,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465847042] [2022-07-14 14:51:08,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:08,383 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:08,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:08,439 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:08,440 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:08,440 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:08,440 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:08,440 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:08,440 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:08,440 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:08,440 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration12_Loop [2022-07-14 14:51:08,440 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:08,440 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:08,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,471 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:08,471 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:08,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,473 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2022-07-14 14:51:08,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:08,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:08,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-07-14 14:51:08,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:08,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~p~0#1=0} Honda state: {ULTIMATE.start_main_~p~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:08,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,525 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2022-07-14 14:51:08,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:08,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:08,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-07-14 14:51:08,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:08,547 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7#1=0} Honda state: {ULTIMATE.start_main_#t~post7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:08,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:08,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,571 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2022-07-14 14:51:08,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-07-14 14:51:08,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:08,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:08,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,623 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2022-07-14 14:51:08,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:08,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:08,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-07-14 14:51:08,856 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:08,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-07-14 14:51:08,859 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:08,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:08,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:08,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:08,859 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:08,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,859 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:08,859 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:08,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration12_Loop [2022-07-14 14:51:08,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:08,859 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:08,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:08,901 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:08,901 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:08,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,902 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2022-07-14 14:51:08,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-07-14 14:51:08,905 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 [2022-07-14 14:51:08,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:08,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:08,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:08,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:08,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:08,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:08,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:08,912 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:08,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2022-07-14 14:51:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,928 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2022-07-14 14:51:08,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-07-14 14:51:08,930 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 [2022-07-14 14:51:08,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:08,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:08,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:08,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:08,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:08,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:08,935 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:08,936 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:08,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-07-14 14:51:08,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,952 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2022-07-14 14:51:08,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-07-14 14:51:08,954 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 [2022-07-14 14:51:08,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:08,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:08,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:08,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:08,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:08,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:08,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:08,961 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:08,964 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-14 14:51:08,964 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:51:08,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:08,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:08,967 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2022-07-14 14:51:08,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-07-14 14:51:08,968 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:08,968 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:08,968 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:08,968 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-07-14 14:51:08,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:08,984 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:09,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:09,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:09,179 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-07-14 14:51:09,180 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1050 states and 1667 transitions. cyclomatic complexity: 644 Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:09,221 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1050 states and 1667 transitions. cyclomatic complexity: 644. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1069 states and 1688 transitions. Complement of second has 10 states. [2022-07-14 14:51:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:09,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2022-07-14 14:51:09,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 30 letters. Loop has 8 letters. [2022-07-14 14:51:09,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:09,223 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:51:09,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:09,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:09,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:09,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-07-14 14:51:09,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1050 states and 1667 transitions. cyclomatic complexity: 644 Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:09,432 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1050 states and 1667 transitions. cyclomatic complexity: 644. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1067 states and 1685 transitions. Complement of second has 12 states. [2022-07-14 14:51:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-07-14 14:51:09,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 30 letters. Loop has 8 letters. [2022-07-14 14:51:09,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:09,434 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:51:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:09,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:09,600 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-07-14 14:51:09,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1050 states and 1667 transitions. cyclomatic complexity: 644 Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:09,685 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1050 states and 1667 transitions. cyclomatic complexity: 644. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 2476 states and 3951 transitions. Complement of second has 14 states. [2022-07-14 14:51:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 53 transitions. [2022-07-14 14:51:09,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 53 transitions. Stem has 30 letters. Loop has 8 letters. [2022-07-14 14:51:09,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:09,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 53 transitions. Stem has 38 letters. Loop has 8 letters. [2022-07-14 14:51:09,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:09,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 53 transitions. Stem has 30 letters. Loop has 16 letters. [2022-07-14 14:51:09,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:09,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2476 states and 3951 transitions. [2022-07-14 14:51:09,710 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 177 [2022-07-14 14:51:09,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2476 states to 1932 states and 2999 transitions. [2022-07-14 14:51:09,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 502 [2022-07-14 14:51:09,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 525 [2022-07-14 14:51:09,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1932 states and 2999 transitions. [2022-07-14 14:51:09,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:09,730 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1932 states and 2999 transitions. [2022-07-14 14:51:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states and 2999 transitions. [2022-07-14 14:51:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1802. [2022-07-14 14:51:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1242 states have (on average 1.1368760064412238) internal successors, (1412), 1303 states have internal predecessors, (1412), 345 states have call successors, (371), 210 states have call predecessors, (371), 215 states have return successors, (1041), 288 states have call predecessors, (1041), 324 states have call successors, (1041) [2022-07-14 14:51:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2824 transitions. [2022-07-14 14:51:09,797 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1802 states and 2824 transitions. [2022-07-14 14:51:09,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:51:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:51:09,798 INFO L87 Difference]: Start difference. First operand 1802 states and 2824 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 14:51:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:09,839 INFO L93 Difference]: Finished difference Result 1096 states and 1653 transitions. [2022-07-14 14:51:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:51:09,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1096 states and 1653 transitions. [2022-07-14 14:51:09,846 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 167 [2022-07-14 14:51:09,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1096 states to 704 states and 1133 transitions. [2022-07-14 14:51:09,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 377 [2022-07-14 14:51:09,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 386 [2022-07-14 14:51:09,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 704 states and 1133 transitions. [2022-07-14 14:51:09,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:09,854 INFO L369 hiAutomatonCegarLoop]: Abstraction has 704 states and 1133 transitions. [2022-07-14 14:51:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states and 1133 transitions. [2022-07-14 14:51:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 700. [2022-07-14 14:51:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 486 states have (on average 1.123456790123457) internal successors, (546), 495 states have internal predecessors, (546), 136 states have call successors, (146), 85 states have call predecessors, (146), 78 states have return successors, (437), 119 states have call predecessors, (437), 127 states have call successors, (437) [2022-07-14 14:51:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1129 transitions. [2022-07-14 14:51:09,871 INFO L392 hiAutomatonCegarLoop]: Abstraction has 700 states and 1129 transitions. [2022-07-14 14:51:09,871 INFO L374 stractBuchiCegarLoop]: Abstraction has 700 states and 1129 transitions. [2022-07-14 14:51:09,871 INFO L287 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2022-07-14 14:51:09,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 700 states and 1129 transitions. [2022-07-14 14:51:09,874 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 167 [2022-07-14 14:51:09,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:09,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:09,875 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:09,875 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-14 14:51:09,875 INFO L752 eck$LassoCheckResult]: Stem: 32504#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32505#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 32541#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 32536#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 32537#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 32590#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 32626#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 32627#partsENTRY ~p := #in~p;~q := #in~q; 32631#L20 assume ~p <= 0;#res := 1; 32629#partsFINAL assume true; 32625#partsEXIT >#68#return; 32623#L36-1 havoc main_#t~ret8#1; 32622#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 32621#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 32616#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 32619#partsENTRY ~p := #in~p;~q := #in~q; 32615#L20 assume ~p <= 0;#res := 1; 32617#partsFINAL assume true; 33101#partsEXIT >#68#return; 33097#L36-1 havoc main_#t~ret8#1; 32574#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 32575#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 32552#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 32553#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 32771#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 32579#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 32769#partsENTRY ~p := #in~p;~q := #in~q; 32855#L20 assume !(~p <= 0); 32854#L21 assume !(~q <= 0); 32853#L22 assume !(~q > ~p); 32799#L23 call #t~ret1 := parts(~p - ~q, ~q);< 32847#partsENTRY [2022-07-14 14:51:09,875 INFO L754 eck$LassoCheckResult]: Loop: 32847#partsENTRY ~p := #in~p;~q := #in~q; 33023#L20 assume !(~p <= 0); 33022#L21 assume !(~q <= 0); 33021#L22 assume !(~q > ~p); 32801#L23 call #t~ret1 := parts(~p - ~q, ~q);< 32847#partsENTRY [2022-07-14 14:51:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1933114887, now seen corresponding path program 1 times [2022-07-14 14:51:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:09,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829426395] [2022-07-14 14:51:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:09,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 14:51:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 14:51:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-14 14:51:09,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:09,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829426395] [2022-07-14 14:51:09,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829426395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:51:09,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:51:09,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 14:51:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804553723] [2022-07-14 14:51:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:51:09,898 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:51:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:09,899 INFO L85 PathProgramCache]: Analyzing trace with hash 28756500, now seen corresponding path program 1 times [2022-07-14 14:51:09,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:09,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999294294] [2022-07-14 14:51:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:09,901 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:09,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:09,945 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:09,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:09,945 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:09,945 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:09,946 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:09,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:09,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:09,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:09,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration13_Loop [2022-07-14 14:51:09,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:09,946 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:09,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:09,995 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:09,995 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:09,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:09,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:09,997 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2022-07-14 14:51:10,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:10,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:10,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-07-14 14:51:10,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:10,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_#t~ret1=0} Honda state: {parts_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:10,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:10,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,047 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2022-07-14 14:51:10,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:10,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:10,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-07-14 14:51:10,067 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:10,067 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_#res=0} Honda state: {parts_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:10,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:10,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,092 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2022-07-14 14:51:10,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:10,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:10,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-07-14 14:51:10,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:10,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,143 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2022-07-14 14:51:10,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-07-14 14:51:10,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:10,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:10,212 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:10,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-07-14 14:51:10,216 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:10,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:10,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:10,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:10,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:10,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:10,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:10,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration13_Loop [2022-07-14 14:51:10,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:10,216 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:10,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:10,255 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:10,256 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:10,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,257 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2022-07-14 14:51:10,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-07-14 14:51:10,260 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 [2022-07-14 14:51:10,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:10,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:10,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:10,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:10,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:10,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:10,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:10,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:10,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2022-07-14 14:51:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,284 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2022-07-14 14:51:10,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-07-14 14:51:10,286 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 [2022-07-14 14:51:10,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:10,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:10,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:10,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:10,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:10,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:10,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:10,307 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:10,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:10,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,324 INFO L229 MonitoredProcess]: Starting monitored process 63 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) [2022-07-14 14:51:10,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-07-14 14:51:10,325 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 [2022-07-14 14:51:10,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:10,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:10,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:10,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:10,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:10,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:10,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:10,359 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:10,372 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:51:10,372 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:51:10,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:10,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,376 INFO L229 MonitoredProcess]: Starting monitored process 64 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) [2022-07-14 14:51:10,383 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:10,384 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:10,384 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:10,384 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(parts_#in~p) = 1*parts_#in~p Supporting invariants [] [2022-07-14 14:51:10,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-07-14 14:51:10,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:10,403 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 14:51:10,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:51:10,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:10,546 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-07-14 14:51:10,546 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 700 states and 1129 transitions. cyclomatic complexity: 449 Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:10,631 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 700 states and 1129 transitions. cyclomatic complexity: 449. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 967 states and 1498 transitions. Complement of second has 20 states. [2022-07-14 14:51:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2022-07-14 14:51:10,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 31 letters. Loop has 5 letters. [2022-07-14 14:51:10,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:10,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 36 letters. Loop has 5 letters. [2022-07-14 14:51:10,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:10,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 31 letters. Loop has 10 letters. [2022-07-14 14:51:10,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:10,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 967 states and 1498 transitions. [2022-07-14 14:51:10,640 INFO L131 ngComponentsAnalysis]: Automaton has 11 accepting balls. 167 [2022-07-14 14:51:10,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 967 states to 868 states and 1385 transitions. [2022-07-14 14:51:10,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 422 [2022-07-14 14:51:10,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 440 [2022-07-14 14:51:10,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 868 states and 1385 transitions. [2022-07-14 14:51:10,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:10,666 INFO L369 hiAutomatonCegarLoop]: Abstraction has 868 states and 1385 transitions. [2022-07-14 14:51:10,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states and 1385 transitions. [2022-07-14 14:51:10,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:10,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 804. [2022-07-14 14:51:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 562 states have (on average 1.1352313167259787) internal successors, (638), 580 states have internal predecessors, (638), 152 states have call successors, (162), 104 states have call predecessors, (162), 90 states have return successors, (487), 119 states have call predecessors, (487), 142 states have call successors, (487) [2022-07-14 14:51:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1287 transitions. [2022-07-14 14:51:10,699 INFO L392 hiAutomatonCegarLoop]: Abstraction has 804 states and 1287 transitions. [2022-07-14 14:51:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:51:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:51:10,700 INFO L87 Difference]: Start difference. First operand 804 states and 1287 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 14:51:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:10,727 INFO L93 Difference]: Finished difference Result 608 states and 943 transitions. [2022-07-14 14:51:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:51:10,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 608 states and 943 transitions. [2022-07-14 14:51:10,732 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 107 [2022-07-14 14:51:10,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 608 states to 596 states and 931 transitions. [2022-07-14 14:51:10,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2022-07-14 14:51:10,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2022-07-14 14:51:10,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 596 states and 931 transitions. [2022-07-14 14:51:10,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:10,738 INFO L369 hiAutomatonCegarLoop]: Abstraction has 596 states and 931 transitions. [2022-07-14 14:51:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states and 931 transitions. [2022-07-14 14:51:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 570. [2022-07-14 14:51:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 402 states have (on average 1.126865671641791) internal successors, (453), 418 states have internal predecessors, (453), 107 states have call successors, (117), 73 states have call predecessors, (117), 61 states have return successors, (335), 78 states have call predecessors, (335), 99 states have call successors, (335) [2022-07-14 14:51:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 905 transitions. [2022-07-14 14:51:10,754 INFO L392 hiAutomatonCegarLoop]: Abstraction has 570 states and 905 transitions. [2022-07-14 14:51:10,754 INFO L374 stractBuchiCegarLoop]: Abstraction has 570 states and 905 transitions. [2022-07-14 14:51:10,754 INFO L287 stractBuchiCegarLoop]: ======== Iteration 14 ============ [2022-07-14 14:51:10,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 570 states and 905 transitions. [2022-07-14 14:51:10,758 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 101 [2022-07-14 14:51:10,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:10,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:10,760 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:10,760 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:10,760 INFO L752 eck$LassoCheckResult]: Stem: 35747#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 35748#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 35763#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 35761#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 35762#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 35879#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 35873#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 35875#partsENTRY ~p := #in~p;~q := #in~q; 35881#L20 assume ~p <= 0;#res := 1; 35877#partsFINAL assume true; 35872#partsEXIT >#68#return; 35863#L36-1 havoc main_#t~ret8#1; 35852#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 35851#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 35845#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 35849#partsENTRY ~p := #in~p;~q := #in~q; 35844#L20 assume ~p <= 0;#res := 1; 35846#partsFINAL assume true; 36294#partsEXIT >#68#return; 36293#L36-1 havoc main_#t~ret8#1; 36292#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 36291#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 36290#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 36289#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 36288#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 35887#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 35893#partsENTRY ~p := #in~p;~q := #in~q; 35955#L20 assume !(~p <= 0); 35937#L21 assume ~q <= 0;#res := 0; 35923#partsFINAL assume true; 35892#partsEXIT >#68#return; 35890#L36-1 havoc main_#t~ret8#1; 35888#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 35886#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 35756#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 35884#partsENTRY ~p := #in~p;~q := #in~q; 35883#L20 assume !(~p <= 0); 35880#L21 assume !(~q <= 0); 35876#L22 assume !(~q > ~p); 35796#L23 call #t~ret1 := parts(~p - ~q, ~q);< 35927#partsENTRY ~p := #in~p;~q := #in~q; 35928#L20 assume ~p <= 0;#res := 1; 35971#partsFINAL assume true; 35970#partsEXIT >#64#return; 35802#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 35959#partsENTRY [2022-07-14 14:51:10,761 INFO L754 eck$LassoCheckResult]: Loop: 35959#partsENTRY ~p := #in~p;~q := #in~q; 35967#L20 assume !(~p <= 0); 35965#L21 assume !(~q <= 0); 35963#L22 assume !(~q > ~p); 35798#L23 call #t~ret1 := parts(~p - ~q, ~q);< 35946#partsENTRY ~p := #in~p;~q := #in~q; 35969#L20 assume ~p <= 0;#res := 1; 35968#partsFINAL assume true; 35960#partsEXIT >#64#return; 35797#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 35959#partsENTRY [2022-07-14 14:51:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1585293162, now seen corresponding path program 1 times [2022-07-14 14:51:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867434655] [2022-07-14 14:51:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:10,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:10,767 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:10,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1964641052, now seen corresponding path program 1 times [2022-07-14 14:51:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:10,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135496216] [2022-07-14 14:51:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:10,781 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:10,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash -574602427, now seen corresponding path program 2 times [2022-07-14 14:51:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:10,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252311944] [2022-07-14 14:51:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:10,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 14:51:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 14:51:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 14:51:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 14:51:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-14 14:51:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-14 14:51:10,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:10,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252311944] [2022-07-14 14:51:10,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252311944] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:51:10,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919974933] [2022-07-14 14:51:10,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:51:10,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:51:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:10,848 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:51:10,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-07-14 14:51:10,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:51:10,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:51:10,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 14:51:10,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-14 14:51:10,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:51:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-14 14:51:10,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919974933] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:51:10,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:51:10,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-07-14 14:51:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954574779] [2022-07-14 14:51:10,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:51:11,055 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:11,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:11,055 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:11,055 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:11,055 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:11,055 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,055 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:11,055 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:11,055 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration14_Loop [2022-07-14 14:51:11,055 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:11,056 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:11,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,105 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:11,105 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:11,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,106 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2022-07-14 14:51:11,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-07-14 14:51:11,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:11,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:11,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:11,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_#t~ret2=0} Honda state: {parts_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:11,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:11,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,164 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2022-07-14 14:51:11,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:11,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:11,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-07-14 14:51:11,175 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:11,175 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_~q=0} Honda state: {parts_~q=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:11,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2022-07-14 14:51:11,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,192 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2022-07-14 14:51:11,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:11,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:11,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-07-14 14:51:11,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:11,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_#t~ret1=0} Honda state: {parts_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:11,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:11,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,249 INFO L229 MonitoredProcess]: Starting monitored process 69 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) [2022-07-14 14:51:11,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-07-14 14:51:11,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:11,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:11,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:11,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_#res=0} Honda state: {parts_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:11,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2022-07-14 14:51:11,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,309 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2022-07-14 14:51:11,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-07-14 14:51:11,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:11,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:11,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2022-07-14 14:51:11,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,333 INFO L229 MonitoredProcess]: Starting monitored process 71 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) [2022-07-14 14:51:11,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-07-14 14:51:11,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:11,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:11,368 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:51:11,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2022-07-14 14:51:11,371 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:11,371 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:11,371 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:11,371 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:11,372 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:51:11,372 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,372 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:11,372 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:11,372 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration14_Loop [2022-07-14 14:51:11,372 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:11,372 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:11,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:11,414 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:11,414 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:51:11,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,416 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2022-07-14 14:51:11,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-07-14 14:51:11,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 14:51:11,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:11,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:11,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:11,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:11,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:11,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:11,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:11,425 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:11,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,441 INFO L229 MonitoredProcess]: Starting monitored process 73 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) [2022-07-14 14:51:11,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-07-14 14:51:11,443 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 [2022-07-14 14:51:11,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:11,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:11,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:11,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:11,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:11,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:11,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:11,450 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:11,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,466 INFO L229 MonitoredProcess]: Starting monitored process 74 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) [2022-07-14 14:51:11,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2022-07-14 14:51:11,467 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 [2022-07-14 14:51:11,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:11,473 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:11,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:11,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:11,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:11,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:11,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:11,485 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:11,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2022-07-14 14:51:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,501 INFO L229 MonitoredProcess]: Starting monitored process 75 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) [2022-07-14 14:51:11,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2022-07-14 14:51:11,503 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 [2022-07-14 14:51:11,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:11,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:11,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:11,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:11,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:11,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:11,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:11,510 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:51:11,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2022-07-14 14:51:11,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,526 INFO L229 MonitoredProcess]: Starting monitored process 76 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) [2022-07-14 14:51:11,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2022-07-14 14:51:11,554 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 [2022-07-14 14:51:11,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:51:11,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:51:11,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:51:11,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:51:11,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:51:11,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:51:11,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:51:11,563 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:51:11,564 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-14 14:51:11,564 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:51:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:11,566 INFO L229 MonitoredProcess]: Starting monitored process 77 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) [2022-07-14 14:51:11,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2022-07-14 14:51:11,568 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:51:11,568 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:51:11,568 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:51:11,568 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(parts_#in~q) = 1*parts_#in~q Supporting invariants [] [2022-07-14 14:51:11,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:11,583 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:51:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:11,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 14:51:11,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:11,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:11,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 14:51:11,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:51:11,827 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-07-14 14:51:11,827 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 570 states and 905 transitions. cyclomatic complexity: 352 Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:11,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 570 states and 905 transitions. cyclomatic complexity: 352. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1746 states and 2836 transitions. Complement of second has 35 states. [2022-07-14 14:51:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-07-14 14:51:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 14:51:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2022-07-14 14:51:12,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 65 transitions. Stem has 45 letters. Loop has 10 letters. [2022-07-14 14:51:12,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:12,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 65 transitions. Stem has 55 letters. Loop has 10 letters. [2022-07-14 14:51:12,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:12,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 65 transitions. Stem has 45 letters. Loop has 20 letters. [2022-07-14 14:51:12,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:51:12,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1746 states and 2836 transitions. [2022-07-14 14:51:12,013 INFO L131 ngComponentsAnalysis]: Automaton has 12 accepting balls. 151 [2022-07-14 14:51:12,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1746 states to 1356 states and 2220 transitions. [2022-07-14 14:51:12,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 393 [2022-07-14 14:51:12,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 404 [2022-07-14 14:51:12,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1356 states and 2220 transitions. [2022-07-14 14:51:12,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:12,029 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1356 states and 2220 transitions. [2022-07-14 14:51:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states and 2220 transitions. [2022-07-14 14:51:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1200. [2022-07-14 14:51:12,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 845 states have (on average 1.1597633136094674) internal successors, (980), 890 states have internal predecessors, (980), 232 states have call successors, (242), 163 states have call predecessors, (242), 123 states have return successors, (671), 146 states have call predecessors, (671), 207 states have call successors, (671) [2022-07-14 14:51:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1893 transitions. [2022-07-14 14:51:12,063 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1200 states and 1893 transitions. [2022-07-14 14:51:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:51:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 14:51:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-14 14:51:12,064 INFO L87 Difference]: Start difference. First operand 1200 states and 1893 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-14 14:51:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:51:12,144 INFO L93 Difference]: Finished difference Result 1474 states and 2233 transitions. [2022-07-14 14:51:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 14:51:12,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1474 states and 2233 transitions. [2022-07-14 14:51:12,153 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 178 [2022-07-14 14:51:12,165 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1474 states to 1416 states and 2162 transitions. [2022-07-14 14:51:12,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 393 [2022-07-14 14:51:12,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 393 [2022-07-14 14:51:12,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1416 states and 2162 transitions. [2022-07-14 14:51:12,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:51:12,166 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1416 states and 2162 transitions. [2022-07-14 14:51:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states and 2162 transitions. [2022-07-14 14:51:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1348. [2022-07-14 14:51:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 944 states have (on average 1.1588983050847457) internal successors, (1094), 999 states have internal predecessors, (1094), 262 states have call successors, (275), 181 states have call predecessors, (275), 142 states have return successors, (716), 167 states have call predecessors, (716), 231 states have call successors, (716) [2022-07-14 14:51:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2085 transitions. [2022-07-14 14:51:12,224 INFO L392 hiAutomatonCegarLoop]: Abstraction has 1348 states and 2085 transitions. [2022-07-14 14:51:12,224 INFO L374 stractBuchiCegarLoop]: Abstraction has 1348 states and 2085 transitions. [2022-07-14 14:51:12,224 INFO L287 stractBuchiCegarLoop]: ======== Iteration 15 ============ [2022-07-14 14:51:12,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1348 states and 2085 transitions. [2022-07-14 14:51:12,229 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 166 [2022-07-14 14:51:12,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:51:12,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:51:12,230 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:51:12,230 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-07-14 14:51:12,230 INFO L752 eck$LassoCheckResult]: Stem: 41326#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 41327#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~ret8#1, main_#t~post7#1, main_~q~0#1, main_#t~post6#1, main_~p~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 41352#L28 assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 41345#L31 assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~p~0#1 := 0; 41346#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 41368#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 41350#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 41351#partsENTRY ~p := #in~p;~q := #in~q; 42661#L20 assume ~p <= 0;#res := 1; 42660#partsFINAL assume true; 42659#partsEXIT >#68#return; 41325#L36-1 havoc main_#t~ret8#1; 41443#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 41515#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 41318#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 41512#partsENTRY ~p := #in~p;~q := #in~q; 41523#L20 assume ~p <= 0;#res := 1; 41514#partsFINAL assume true; 41511#partsEXIT >#68#return; 41510#L36-1 havoc main_#t~ret8#1; 41509#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 41508#L35-3 assume !(main_~q~0#1 <= main_~x~0#1); 41507#L34-2 main_#t~post6#1 := main_~p~0#1;main_~p~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 41505#L34-3 assume !!(main_~p~0#1 <= main_~x~0#1);main_~q~0#1 := 0; 41503#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 41500#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 41501#partsENTRY ~p := #in~p;~q := #in~q; 41506#L20 assume !(~p <= 0); 41504#L21 assume ~q <= 0;#res := 0; 41502#partsFINAL assume true; 41499#partsEXIT >#68#return; 41498#L36-1 havoc main_#t~ret8#1; 41497#L35-2 main_#t~post7#1 := main_~q~0#1;main_~q~0#1 := 1 + main_#t~post7#1;havoc main_#t~post7#1; 41495#L35-3 assume !!(main_~q~0#1 <= main_~x~0#1); 41496#L36 call main_#t~ret8#1 := parts(main_~p~0#1, main_~q~0#1);< 41672#partsENTRY ~p := #in~p;~q := #in~q; 41671#L20 assume !(~p <= 0); 41668#L21 assume !(~q <= 0); 41666#L22 assume ~q > ~p; 41483#L22-1 call #t~ret0 := parts(~p, ~p);< 41657#partsENTRY ~p := #in~p;~q := #in~q; 41658#L20 assume !(~p <= 0); 41830#L21 assume !(~q <= 0); 41825#L22 assume !(~q > ~p); 41801#L23 call #t~ret1 := parts(~p - ~q, ~q);< 41802#partsENTRY ~p := #in~p;~q := #in~q; 41829#L20 assume ~p <= 0;#res := 1; 41824#partsFINAL assume true; 41800#partsEXIT >#64#return; 41354#L23-1 call #t~ret2 := parts(~p, ~q - 1);< 41796#partsENTRY ~p := #in~p;~q := #in~q; 41797#L20 assume !(~p <= 0); 41835#L21 assume !(~q <= 0); 41836#L22 [2022-07-14 14:51:12,230 INFO L754 eck$LassoCheckResult]: Loop: 41836#L22 assume !(~q > ~p); 41353#L23 call #t~ret1 := parts(~p - ~q, ~q);< 41357#partsENTRY ~p := #in~p;~q := #in~q; 41775#L20 assume !(~p <= 0); 42338#L21 assume !(~q <= 0); 41836#L22 [2022-07-14 14:51:12,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -505554686, now seen corresponding path program 1 times [2022-07-14 14:51:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:12,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142990682] [2022-07-14 14:51:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:12,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 14:51:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 14:51:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 14:51:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 14:51:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-14 14:51:12,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:51:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142990682] [2022-07-14 14:51:12,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142990682] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:51:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50037091] [2022-07-14 14:51:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:12,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:51:12,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:12,278 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:51:12,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-07-14 14:51:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:51:12,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:51:12,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:51:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-14 14:51:12,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:51:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-14 14:51:12,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50037091] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:51:12,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:51:12,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-07-14 14:51:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103766789] [2022-07-14 14:51:12,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:51:12,374 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:51:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:51:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 43435410, now seen corresponding path program 2 times [2022-07-14 14:51:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:51:12,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707222285] [2022-07-14 14:51:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:51:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:51:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:12,377 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:51:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:51:12,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:51:12,460 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:51:12,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:51:12,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:51:12,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:51:12,461 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:51:12,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:12,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:51:12,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:51:12,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parts.c_Iteration15_Loop [2022-07-14 14:51:12,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:51:12,462 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:51:12,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:12,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:12,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:12,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:12,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:51:12,512 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:51:12,512 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:51:12,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:12,516 INFO L229 MonitoredProcess]: Starting monitored process 79 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) [2022-07-14 14:51:12,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:12,524 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:12,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2022-07-14 14:51:12,545 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:51:12,545 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {parts_#t~ret2=0} Honda state: {parts_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:51:12,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:12,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:12,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:12,569 INFO L229 MonitoredProcess]: Starting monitored process 80 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) [2022-07-14 14:51:12,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:51:12,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:51:12,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2022-07-14 14:51:12,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2022-07-14 14:51:12,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:51:12,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:51:12,626 INFO L229 MonitoredProcess]: Starting monitored process 81 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) [2022-07-14 14:51:12,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2022-07-14 14:51:12,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:51:12,628 INFO L160 nArgumentSynthesizer]: Using integer mode.