./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.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 --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 b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:58:57,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:58:57,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-13 16:58:57,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:58:57,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:58:57,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:58:57,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:58:57,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:58:57,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:58:57,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:58:57,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:58:57,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:58:57,618 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:58:57,619 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-13 16:58:57,619 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-13 16:58:57,619 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-13 16:58:57,620 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-13 16:58:57,620 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-13 16:58:57,620 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-13 16:58:57,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:58:57,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-13 16:58:57,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:58:57,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:58:57,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-13 16:58:57,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-13 16:58:57,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-13 16:58:57,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:58:57,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:58:57,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:58:57,627 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-13 16:58:57,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:58:57,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:58:57,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:58:57,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:58:57,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:58:57,629 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-13 16:58:57,629 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 [2024-10-13 16:58:57,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:58:57,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:58:57,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:58:57,905 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:58:57,906 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:58:57,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2024-10-13 16:58:59,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:58:59,465 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:58:59,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2024-10-13 16:58:59,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1c87472/b10e4922b78040c9bf8aaad3331be6a1/FLAG061c1ea6a [2024-10-13 16:58:59,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1c87472/b10e4922b78040c9bf8aaad3331be6a1 [2024-10-13 16:58:59,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:58:59,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:58:59,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:58:59,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:58:59,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:58:59,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd1b8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59, skipping insertion in model container [2024-10-13 16:58:59,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:58:59,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:58:59,689 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:58:59,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:58:59,720 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:58:59,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59 WrapperNode [2024-10-13 16:58:59,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:58:59,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:58:59,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:58:59,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:58:59,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,746 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-10-13 16:58:59,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:58:59,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:58:59,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:58:59,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:58:59,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,763 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-13 16:58:59,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:58:59,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:58:59,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:58:59,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:58:59,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (1/1) ... [2024-10-13 16:58:59,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:58:59,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:58:59,805 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) [2024-10-13 16:58:59,808 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 [2024-10-13 16:58:59,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:58:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:58:59,944 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:58:59,950 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:59:00,029 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-13 16:59:00,030 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:59:00,046 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:59:00,047 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 16:59:00,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:59:00 BoogieIcfgContainer [2024-10-13 16:59:00,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:59:00,048 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-13 16:59:00,049 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-13 16:59:00,053 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-13 16:59:00,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:59:00,054 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 04:58:59" (1/3) ... [2024-10-13 16:59:00,055 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dcea78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:59:00, skipping insertion in model container [2024-10-13 16:59:00,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:59:00,055 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:58:59" (2/3) ... [2024-10-13 16:59:00,056 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2dcea78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:59:00, skipping insertion in model container [2024-10-13 16:59:00,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:59:00,056 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:59:00" (3/3) ... [2024-10-13 16:59:00,059 INFO L332 chiAutomizerObserver]: Analyzing ICFG b.18.c [2024-10-13 16:59:00,124 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-13 16:59:00,124 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-13 16:59:00,124 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-13 16:59:00,124 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-13 16:59:00,125 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-13 16:59:00,125 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-13 16:59:00,125 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-13 16:59:00,126 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-13 16:59:00,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:00,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-13 16:59:00,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:59:00,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:59:00,152 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:59:00,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:59:00,152 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-13 16:59:00,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:00,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-13 16:59:00,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:59:00,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:59:00,155 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:59:00,155 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:59:00,162 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L15-3true [2024-10-13 16:59:00,163 INFO L747 eck$LassoCheckResult]: Loop: 4#L15-3true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 5#L10true assume main_~x~0#1 > main_~y~0#1; 9#L11-2true assume !(main_~x~0#1 > 0); 4#L15-3true [2024-10-13 16:59:00,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-13 16:59:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237737511] [2024-10-13 16:59:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:00,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash 40817, now seen corresponding path program 1 times [2024-10-13 16:59:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213426766] [2024-10-13 16:59:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:59:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:59:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213426766] [2024-10-13 16:59:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213426766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:59:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:59:00,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:59:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725180635] [2024-10-13 16:59:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:59:00,369 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 16:59:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:59:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:59:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:59:00,403 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 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) [2024-10-13 16:59:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 16:59:00,439 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2024-10-13 16:59:00,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 16 transitions. [2024-10-13 16:59:00,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-13 16:59:00,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 11 transitions. [2024-10-13 16:59:00,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-10-13 16:59:00,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-13 16:59:00,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-10-13 16:59:00,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:59:00,463 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-13 16:59:00,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-10-13 16:59:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-10-13 16:59:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2024-10-13 16:59:00,514 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2024-10-13 16:59:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:59:00,523 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2024-10-13 16:59:00,523 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-13 16:59:00,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2024-10-13 16:59:00,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-13 16:59:00,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:59:00,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:59:00,528 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:59:00,528 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:59:00,528 INFO L745 eck$LassoCheckResult]: Stem: 35#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 36#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 31#L15-3 [2024-10-13 16:59:00,528 INFO L747 eck$LassoCheckResult]: Loop: 31#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 32#L10 assume !(main_~x~0#1 > main_~y~0#1); 33#L15-2 assume !(main_~y~0#1 > 0); 31#L15-3 [2024-10-13 16:59:00,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-13 16:59:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168299426] [2024-10-13 16:59:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:00,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash 41265, now seen corresponding path program 1 times [2024-10-13 16:59:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271080346] [2024-10-13 16:59:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:59:00,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:59:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271080346] [2024-10-13 16:59:00,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271080346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:59:00,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:59:00,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:59:00,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681485296] [2024-10-13 16:59:00,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:59:00,564 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 16:59:00,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:59:00,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:59:00,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:59:00,566 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 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) [2024-10-13 16:59:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 16:59:00,579 INFO L93 Difference]: Finished difference Result 9 states and 12 transitions. [2024-10-13 16:59:00,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2024-10-13 16:59:00,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-13 16:59:00,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 12 transitions. [2024-10-13 16:59:00,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-10-13 16:59:00,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-10-13 16:59:00,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2024-10-13 16:59:00,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:59:00,581 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-10-13 16:59:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2024-10-13 16:59:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-10-13 16:59:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-10-13 16:59:00,582 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-13 16:59:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:59:00,584 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-13 16:59:00,584 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-13 16:59:00,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-10-13 16:59:00,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-13 16:59:00,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:59:00,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:59:00,585 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:59:00,585 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-13 16:59:00,585 INFO L745 eck$LassoCheckResult]: Stem: 57#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 58#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 53#L15-3 [2024-10-13 16:59:00,585 INFO L747 eck$LassoCheckResult]: Loop: 53#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 54#L10 assume !(main_~x~0#1 > main_~y~0#1); 55#L15-2 assume !!(main_~y~0#1 > 0);main_~y~0#1 := main_~y~0#1 - 1; 60#L15-2 assume !(main_~y~0#1 > 0); 53#L15-3 [2024-10-13 16:59:00,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,586 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-10-13 16:59:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043428206] [2024-10-13 16:59:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:00,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1279312, now seen corresponding path program 1 times [2024-10-13 16:59:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70951828] [2024-10-13 16:59:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:00,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 889706514, now seen corresponding path program 1 times [2024-10-13 16:59:00,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:00,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5365168] [2024-10-13 16:59:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:00,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:00,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:00,710 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:59:00,711 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:59:00,711 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:59:00,711 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:59:00,711 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:59:00,711 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:00,711 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:59:00,711 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:59:00,711 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2024-10-13 16:59:00,712 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:59:00,712 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:59:00,725 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:00,735 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:00,739 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:00,838 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:59:00,839 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:59:00,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:00,846 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) [2024-10-13 16:59:00,847 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 [2024-10-13 16:59:00,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:59:00,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:00,871 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:59:00,871 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-13 16:59:00,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-13 16:59:00,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:00,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:00,890 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) [2024-10-13 16:59:00,892 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 [2024-10-13 16:59:00,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:59:00,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:00,917 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:59:00,917 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-13 16:59:00,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-13 16:59:00,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:00,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:00,934 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) [2024-10-13 16:59:00,936 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 [2024-10-13 16:59:00,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:59:00,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:00,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-13 16:59:00,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:00,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:00,968 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) [2024-10-13 16:59:00,970 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 [2024-10-13 16:59:00,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:59:00,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:01,046 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:59:01,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-13 16:59:01,051 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:59:01,051 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:59:01,051 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:59:01,051 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:59:01,052 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:59:01,052 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,052 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:59:01,052 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:59:01,052 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2024-10-13 16:59:01,052 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:59:01,052 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:59:01,054 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,061 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,117 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:59:01,122 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:59:01,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,125 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) [2024-10-13 16:59:01,127 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 [2024-10-13 16:59:01,129 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 [2024-10-13 16:59:01,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:59:01,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:59:01,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:59:01,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:59:01,147 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-13 16:59:01,147 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-13 16:59:01,155 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:59:01,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-13 16:59:01,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,172 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) [2024-10-13 16:59:01,174 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 [2024-10-13 16:59:01,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-13 16:59:01,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:59:01,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:59:01,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:59:01,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:59:01,189 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-13 16:59:01,189 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-13 16:59:01,193 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:59:01,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-13 16:59:01,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,211 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) [2024-10-13 16:59:01,212 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 [2024-10-13 16:59:01,213 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 [2024-10-13 16:59:01,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:59:01,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:59:01,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:59:01,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:59:01,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:59:01,225 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:59:01,225 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:59:01,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:59:01,236 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-10-13 16:59:01,236 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-10-13 16:59:01,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,322 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) [2024-10-13 16:59:01,323 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 [2024-10-13 16:59:01,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:59:01,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:59:01,324 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:59:01,324 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2024-10-13 16:59:01,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-13 16:59:01,337 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:59:01,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:01,366 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:59:01,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:59:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:01,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:59:01,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:59:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:59:01,425 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-13 16:59:01,427 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,478 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 24 transitions. Complement of second has 6 states. [2024-10-13 16:59:01,479 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 [2024-10-13 16:59:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-10-13 16:59:01,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2024-10-13 16:59:01,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:59:01,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 4 letters. [2024-10-13 16:59:01,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:59:01,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 8 letters. [2024-10-13 16:59:01,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:59:01,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2024-10-13 16:59:01,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-13 16:59:01,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 22 transitions. [2024-10-13 16:59:01,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-13 16:59:01,485 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-10-13 16:59:01,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2024-10-13 16:59:01,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-13 16:59:01,486 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2024-10-13 16:59:01,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2024-10-13 16:59:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2024-10-13 16:59:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2024-10-13 16:59:01,487 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2024-10-13 16:59:01,487 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2024-10-13 16:59:01,488 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-13 16:59:01,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2024-10-13 16:59:01,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-13 16:59:01,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:59:01,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:59:01,488 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-13 16:59:01,488 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-13 16:59:01,489 INFO L745 eck$LassoCheckResult]: Stem: 126#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 128#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 120#L10 [2024-10-13 16:59:01,489 INFO L747 eck$LassoCheckResult]: Loop: 120#L10 assume main_~x~0#1 > main_~y~0#1; 123#L11-2 assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1; 129#L11-2 assume !(main_~x~0#1 > 0); 119#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 120#L10 [2024-10-13 16:59:01,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,489 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-13 16:59:01,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:01,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015491879] [2024-10-13 16:59:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:01,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:01,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1363360, now seen corresponding path program 1 times [2024-10-13 16:59:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:01,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065932052] [2024-10-13 16:59:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:59:01,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:59:01,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065932052] [2024-10-13 16:59:01,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065932052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:59:01,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:59:01,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:59:01,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211085970] [2024-10-13 16:59:01,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:59:01,519 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 16:59:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:59:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:59:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:59:01,520 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 16:59:01,527 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2024-10-13 16:59:01,527 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2024-10-13 16:59:01,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:59:01,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 14 transitions. [2024-10-13 16:59:01,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-13 16:59:01,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-10-13 16:59:01,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2024-10-13 16:59:01,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-13 16:59:01,533 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-10-13 16:59:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2024-10-13 16:59:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2024-10-13 16:59:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-10-13 16:59:01,534 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-13 16:59:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:59:01,535 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-10-13 16:59:01,536 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-13 16:59:01,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-10-13 16:59:01,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:59:01,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:59:01,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:59:01,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-13 16:59:01,538 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-13 16:59:01,538 INFO L745 eck$LassoCheckResult]: Stem: 159#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 160#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 161#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 154#L10 assume main_~x~0#1 > main_~y~0#1; 157#L11-2 [2024-10-13 16:59:01,539 INFO L747 eck$LassoCheckResult]: Loop: 157#L11-2 assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1; 157#L11-2 [2024-10-13 16:59:01,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-10-13 16:59:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729551197] [2024-10-13 16:59:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:01,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2024-10-13 16:59:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:01,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180242611] [2024-10-13 16:59:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:01,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2024-10-13 16:59:01,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:59:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259315240] [2024-10-13 16:59:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:59:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:59:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:59:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:59:01,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:59:01,589 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:59:01,590 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:59:01,590 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:59:01,590 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:59:01,590 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:59:01,590 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,590 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:59:01,590 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:59:01,590 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2024-10-13 16:59:01,591 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:59:01,591 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:59:01,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,635 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:59:01,635 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:59:01,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,637 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) [2024-10-13 16:59:01,638 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 [2024-10-13 16:59:01,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:59:01,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:01,663 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:59:01,664 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-13 16:59:01,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-13 16:59:01,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,681 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) [2024-10-13 16:59:01,682 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 [2024-10-13 16:59:01,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:59:01,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:01,712 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 [2024-10-13 16:59:01,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,714 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) [2024-10-13 16:59:01,714 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 [2024-10-13 16:59:01,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:59:01,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:59:01,743 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:59:01,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-13 16:59:01,747 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:59:01,747 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:59:01,747 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:59:01,748 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:59:01,748 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:59:01,748 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,748 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:59:01,748 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:59:01,748 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2024-10-13 16:59:01,748 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:59:01,748 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:59:01,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:59:01,800 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:59:01,800 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:59:01,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,802 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) [2024-10-13 16:59:01,804 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 [2024-10-13 16:59:01,804 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 [2024-10-13 16:59:01,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:59:01,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:59:01,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:59:01,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:59:01,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:59:01,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:59:01,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:59:01,821 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:59:01,824 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-13 16:59:01,824 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-13 16:59:01,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:59:01,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:59:01,826 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) [2024-10-13 16:59:01,827 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 [2024-10-13 16:59:01,828 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:59:01,828 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:59:01,828 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:59:01,829 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-10-13 16:59:01,844 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 [2024-10-13 16:59:01,845 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:59:01,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:59:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:01,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:59:01,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:59:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:59:01,876 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:59:01,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:59:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:59:01,877 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-13 16:59:01,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,882 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 2 states. [2024-10-13 16:59:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-13 16:59:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:59:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-10-13 16:59:01,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2024-10-13 16:59:01,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:59:01,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2024-10-13 16:59:01,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:59:01,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-13 16:59:01,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:59:01,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2024-10-13 16:59:01,887 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:59:01,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2024-10-13 16:59:01,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-13 16:59:01,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-13 16:59:01,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-13 16:59:01,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:59:01,888 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:59:01,888 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:59:01,888 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:59:01,888 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-13 16:59:01,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-13 16:59:01,888 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:59:01,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-13 16:59:01,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 04:59:01 BoogieIcfgContainer [2024-10-13 16:59:01,900 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-13 16:59:01,904 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:59:01,904 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:59:01,904 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:59:01,905 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:59:00" (3/4) ... [2024-10-13 16:59:01,906 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-13 16:59:01,907 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:59:01,908 INFO L158 Benchmark]: Toolchain (without parser) took 2419.28ms. Allocated memory is still 155.2MB. Free memory was 119.2MB in the beginning and 56.8MB in the end (delta: 62.4MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2024-10-13 16:59:01,908 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:59:01,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.30ms. Allocated memory is still 155.2MB. Free memory was 119.2MB in the beginning and 108.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 16:59:01,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.18ms. Allocated memory is still 155.2MB. Free memory was 107.5MB in the beginning and 106.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:59:01,909 INFO L158 Benchmark]: Boogie Preprocessor took 23.66ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 105.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:59:01,910 INFO L158 Benchmark]: RCFGBuilder took 275.35ms. Allocated memory is still 155.2MB. Free memory was 105.4MB in the beginning and 95.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-13 16:59:01,910 INFO L158 Benchmark]: BuchiAutomizer took 1854.77ms. Allocated memory is still 155.2MB. Free memory was 95.0MB in the beginning and 56.8MB in the end (delta: 38.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2024-10-13 16:59:01,910 INFO L158 Benchmark]: Witness Printer took 3.77ms. Allocated memory is still 155.2MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:59:01,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.30ms. Allocated memory is still 155.2MB. Free memory was 119.2MB in the beginning and 108.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.18ms. Allocated memory is still 155.2MB. Free memory was 107.5MB in the beginning and 106.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.66ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 105.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 275.35ms. Allocated memory is still 155.2MB. Free memory was 105.4MB in the beginning and 95.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1854.77ms. Allocated memory is still 155.2MB. Free memory was 95.0MB in the beginning and 56.8MB in the end (delta: 38.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Witness Printer took 3.77ms. Allocated memory is still 155.2MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 36 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-13 16:59:01,939 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 [2024-10-13 16:59:02,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:59:02,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE