./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.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 ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:56:36,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:56:36,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-13 16:56:36,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:56:36,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:56:36,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:56:36,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:56:36,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:56:36,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:56:36,561 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:56:36,562 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:56:36,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:56:36,563 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:56:36,566 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-13 16:56:36,566 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-13 16:56:36,567 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-13 16:56:36,567 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-13 16:56:36,567 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-13 16:56:36,567 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-13 16:56:36,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:56:36,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-13 16:56:36,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:56:36,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:56:36,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-13 16:56:36,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-13 16:56:36,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-13 16:56:36,571 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:56:36,571 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:56:36,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:56:36,572 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-13 16:56:36,572 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:56:36,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:56:36,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:56:36,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:56:36,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:56:36,574 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-13 16:56:36,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 [2024-10-13 16:56:36,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:56:36,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:56:36,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:56:36,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:56:36,869 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:56:36,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2024-10-13 16:56:38,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:56:38,548 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:56:38,548 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2024-10-13 16:56:38,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e034948c7/b982c0797a7f4db79493025c459ae943/FLAG5ad90f634 [2024-10-13 16:56:38,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e034948c7/b982c0797a7f4db79493025c459ae943 [2024-10-13 16:56:38,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:56:38,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:56:38,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:56:38,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:56:38,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:56:38,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61309078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38, skipping insertion in model container [2024-10-13 16:56:38,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:56:38,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:56:38,793 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:56:38,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:56:38,816 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:56:38,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38 WrapperNode [2024-10-13 16:56:38,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:56:38,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:56:38,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:56:38,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:56:38,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,844 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-10-13 16:56:38,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:56:38,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:56:38,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:56:38,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:56:38,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,860 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-13 16:56:38,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:56:38,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:56:38,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:56:38,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:56:38,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (1/1) ... [2024-10-13 16:56:38,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:38,914 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 16:56:38,916 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 16:56:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:56:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:56:39,040 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:56:39,042 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:56:39,092 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-13 16:56:39,092 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:56:39,102 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:56:39,102 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:56:39,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:56:39 BoogieIcfgContainer [2024-10-13 16:56:39,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:56:39,104 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-13 16:56:39,104 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-13 16:56:39,108 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-13 16:56:39,109 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:56:39,109 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 04:56:38" (1/3) ... [2024-10-13 16:56:39,110 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60844ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:56:39, skipping insertion in model container [2024-10-13 16:56:39,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:56:39,110 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:56:38" (2/3) ... [2024-10-13 16:56:39,111 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60844ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:56:39, skipping insertion in model container [2024-10-13 16:56:39,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:56:39,111 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:56:39" (3/3) ... [2024-10-13 16:56:39,113 INFO L332 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2024-10-13 16:56:39,160 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-13 16:56:39,160 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-13 16:56:39,161 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-13 16:56:39,161 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-13 16:56:39,161 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-13 16:56:39,161 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-13 16:56:39,161 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-13 16:56:39,161 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-13 16:56:39,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:39,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-13 16:56:39,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:56:39,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:56:39,182 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:56:39,182 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:56:39,182 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-13 16:56:39,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:39,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-13 16:56:39,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:56:39,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:56:39,184 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:56:39,184 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:56:39,191 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 2#L19-2true [2024-10-13 16:56:39,192 INFO L747 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 7#L21-2true assume !(main_~j~0#1 <= main_~i~0#1); 4#L21-3true main_~i~0#1 := 1 + main_~i~0#1; 2#L19-2true [2024-10-13 16:56:39,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-13 16:56:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541799045] [2024-10-13 16:56:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:39,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:39,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:39,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:39,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2024-10-13 16:56:39,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:39,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837535902] [2024-10-13 16:56:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:39,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:39,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:39,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2024-10-13 16:56:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:39,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459835956] [2024-10-13 16:56:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:39,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:39,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:39,442 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:39,443 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:39,443 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:39,443 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:39,443 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:56:39,443 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:39,443 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:39,443 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:39,443 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2024-10-13 16:56:39,444 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:39,444 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:39,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,552 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:39,552 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:56:39,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:39,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:39,558 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 16:56:39,560 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 16:56:39,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:39,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:39,587 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 16:56:39,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:39,590 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 16:56:39,590 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 16:56:39,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:56:39,591 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:39,631 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:56:39,638 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 16:56:39,638 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:39,638 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:39,639 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:39,639 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:39,639 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:56:39,639 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:39,639 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:39,640 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:39,640 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2024-10-13 16:56:39,640 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:39,640 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:39,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,674 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:39,736 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:39,741 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:56:39,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:39,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:39,745 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 16:56:39,747 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 16:56:39,748 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 16:56:39,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:39,760 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:56:39,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:39,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:39,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:39,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:56:39,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:56:39,768 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:56:39,774 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-13 16:56:39,774 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-13 16:56:39,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:39,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:39,801 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 16:56:39,803 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 16:56:39,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:56:39,804 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:56:39,805 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:56:39,805 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-10-13 16:56:39,816 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 16:56:39,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:56:39,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:39,856 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:56:39,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:39,870 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:56:39,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:39,922 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 16:56:39,962 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-13 16:56:39,964 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 16:56:40,034 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 27 states and 43 transitions. Complement of second has 10 states. [2024-10-13 16:56:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-13 16:56:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 16:56:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2024-10-13 16:56:40,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 2 letters. Loop has 3 letters. [2024-10-13 16:56:40,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:40,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 5 letters. Loop has 3 letters. [2024-10-13 16:56:40,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:40,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 2 letters. Loop has 6 letters. [2024-10-13 16:56:40,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:40,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 43 transitions. [2024-10-13 16:56:40,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-13 16:56:40,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 14 states and 19 transitions. [2024-10-13 16:56:40,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-13 16:56:40,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-13 16:56:40,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2024-10-13 16:56:40,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-13 16:56:40,058 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2024-10-13 16:56:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2024-10-13 16:56:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-10-13 16:56:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2024-10-13 16:56:40,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-13 16:56:40,086 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-13 16:56:40,086 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-13 16:56:40,086 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2024-10-13 16:56:40,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-13 16:56:40,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:56:40,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:56:40,088 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-13 16:56:40,088 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-13 16:56:40,089 INFO L745 eck$LassoCheckResult]: Stem: 89#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 90#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_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 93#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 83#L21-2 [2024-10-13 16:56:40,089 INFO L747 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 91#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 86#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 82#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 83#L21-2 [2024-10-13 16:56:40,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-13 16:56:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743232774] [2024-10-13 16:56:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:40,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1537394, now seen corresponding path program 1 times [2024-10-13 16:56:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:40,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593426787] [2024-10-13 16:56:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,114 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:40,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 1 times [2024-10-13 16:56:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051486164] [2024-10-13 16:56:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:40,193 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:40,193 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:40,193 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:40,193 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:40,193 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:56:40,193 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,193 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:40,194 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:40,194 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2024-10-13 16:56:40,194 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:40,194 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:40,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,207 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,268 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:40,268 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:56:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,270 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 16:56:40,272 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 16:56:40,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:40,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:40,293 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:56:40,293 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 16:56:40,304 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 16:56:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,305 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 16:56:40,306 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 16:56:40,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:40,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:40,326 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:56:40,326 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-13 16:56:40,337 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 16:56:40,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,339 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 16:56:40,341 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 16:56:40,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:40,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:40,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:40,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,368 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 16:56:40,368 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 16:56:40,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:56:40,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:40,469 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:56:40,474 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 16:56:40,474 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:40,475 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:40,475 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:40,475 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:40,475 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:56:40,475 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,475 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:40,475 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:40,475 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2024-10-13 16:56:40,475 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:40,475 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:40,477 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,481 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-13 16:56:40,563 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:40,563 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:56:40,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,565 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 16:56:40,569 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 16:56:40,570 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 16:56:40,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:40,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:40,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:40,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:40,607 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-13 16:56:40,611 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-13 16:56:40,619 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:56:40,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:40,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,637 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 16:56:40,639 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 16:56:40,640 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 16:56:40,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:40,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:40,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:40,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:40,656 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-13 16:56:40,656 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-13 16:56:40,660 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:56:40,675 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 16:56:40,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,678 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 16:56:40,680 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 16:56:40,681 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 16:56:40,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:40,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:56:40,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:40,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:40,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:40,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:56:40,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:56:40,703 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:56:40,708 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-13 16:56:40,708 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-13 16:56:40,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,711 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 16:56:40,712 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 16:56:40,713 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:56:40,713 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:56:40,714 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:56:40,714 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2024-10-13 16:56:40,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:40,730 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:56:40,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:40,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:56:40,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:40,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:56:40,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:40,783 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 16:56:40,784 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 16:56:40,784 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:40,810 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 32 transitions. Complement of second has 6 states. [2024-10-13 16:56:40,813 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 16:56:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-10-13 16:56:40,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-13 16:56:40,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:40,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2024-10-13 16:56:40,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:40,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-13 16:56:40,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:40,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2024-10-13 16:56:40,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:56:40,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 23 transitions. [2024-10-13 16:56:40,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-13 16:56:40,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-13 16:56:40,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2024-10-13 16:56:40,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-13 16:56:40,818 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2024-10-13 16:56:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2024-10-13 16:56:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-10-13 16:56:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 states have internal predecessors, (22), 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 16:56:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2024-10-13 16:56:40,822 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2024-10-13 16:56:40,822 INFO L425 stractBuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2024-10-13 16:56:40,823 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-13 16:56:40,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2024-10-13 16:56:40,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:56:40,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:56:40,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:56:40,825 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-13 16:56:40,825 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-13 16:56:40,825 INFO L745 eck$LassoCheckResult]: Stem: 166#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 167#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 161#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 162#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 168#L21-2 [2024-10-13 16:56:40,826 INFO L747 eck$LassoCheckResult]: Loop: 168#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 168#L21-2 [2024-10-13 16:56:40,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2024-10-13 16:56:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:40,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799283833] [2024-10-13 16:56:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:40,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:40,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2024-10-13 16:56:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128819220] [2024-10-13 16:56:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:40,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2024-10-13 16:56:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:40,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041465786] [2024-10-13 16:56:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:40,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:40,884 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:40,884 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:40,885 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:40,885 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:40,885 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:56:40,885 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,885 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:40,885 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:40,885 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2024-10-13 16:56:40,885 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:40,885 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:40,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,893 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:40,932 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:40,932 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:56:40,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,934 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 16:56:40,935 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 16:56:40,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:40,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:40,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-13 16:56:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:40,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:40,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-13 16:56:40,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:56:40,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:41,101 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:56:41,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:41,108 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:41,108 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:41,108 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:41,108 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:41,108 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:56:41,108 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,108 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:41,108 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:41,108 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2024-10-13 16:56:41,108 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:41,108 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:41,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,126 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,158 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:41,159 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:56:41,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,160 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-13 16:56:41,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-13 16:56:41,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:41,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:56:41,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:41,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:41,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:41,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:56:41,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:56:41,179 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:56:41,183 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-13 16:56:41,183 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-13 16:56:41,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,185 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-13 16:56:41,187 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:56:41,187 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:56:41,187 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:56:41,187 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2024-10-13 16:56:41,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-13 16:56:41,204 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:56:41,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,243 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,243 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 16:56:41,244 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 16:56:41,244 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 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 16:56:41,252 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. 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 23 states and 35 transitions. Complement of second has 3 states. [2024-10-13 16:56:41,252 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 16:56:41,253 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 16:56:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2024-10-13 16:56:41,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2024-10-13 16:56:41,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 5 letters. Loop has 1 letters. [2024-10-13 16:56:41,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-13 16:56:41,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2024-10-13 16:56:41,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:56:41,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 21 states and 32 transitions. [2024-10-13 16:56:41,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-10-13 16:56:41,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-13 16:56:41,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 32 transitions. [2024-10-13 16:56:41,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-13 16:56:41,256 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 32 transitions. [2024-10-13 16:56:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 32 transitions. [2024-10-13 16:56:41,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-13 16:56:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 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 16:56:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2024-10-13 16:56:41,258 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 28 transitions. [2024-10-13 16:56:41,258 INFO L425 stractBuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2024-10-13 16:56:41,258 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-13 16:56:41,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 28 transitions. [2024-10-13 16:56:41,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:56:41,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:56:41,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:56:41,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2024-10-13 16:56:41,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-13 16:56:41,261 INFO L745 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 237#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_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 230#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 231#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 238#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 247#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 245#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 241#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 240#L21-2 [2024-10-13 16:56:41,261 INFO L747 eck$LassoCheckResult]: Loop: 240#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 240#L21-2 [2024-10-13 16:56:41,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,261 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 2 times [2024-10-13 16:56:41,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:41,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477542719] [2024-10-13 16:56:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:41,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:41,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:41,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2024-10-13 16:56:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:41,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675643748] [2024-10-13 16:56:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:41,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:41,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:41,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash 756678361, now seen corresponding path program 3 times [2024-10-13 16:56:41,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:56:41,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473725838] [2024-10-13 16:56:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:56:41,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:56:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:41,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:56:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:56:41,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:56:41,324 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:41,324 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:41,324 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:41,324 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:41,324 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:56:41,324 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,325 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:41,325 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:41,325 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2024-10-13 16:56:41,325 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:41,325 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:41,326 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,328 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,364 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:41,365 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:56:41,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-13 16:56:41,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:41,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:41,392 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:56:41,392 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-13 16:56:41,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:41,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,409 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-13 16:56:41,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:41,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:41,438 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:56:41,439 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-13 16:56:41,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-13 16:56:41,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-13 16:56:41,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:56:41,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:41,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-13 16:56:41,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,495 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-13 16:56:41,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:56:41,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:56:41,595 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:56:41,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-13 16:56:41,601 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:56:41,601 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:56:41,601 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:56:41,601 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:56:41,601 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:56:41,601 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,601 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:56:41,601 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:56:41,601 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2024-10-13 16:56:41,601 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:56:41,601 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:56:41,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,605 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:56:41,652 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:56:41,653 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:56:41,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-13 16:56:41,659 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 16:56:41,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:41,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:41,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:41,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:41,674 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-13 16:56:41,674 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-13 16:56:41,680 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:56:41,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-13 16:56:41,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,697 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-13 16:56:41,699 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 16:56:41,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:41,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:41,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:41,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:41,714 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-13 16:56:41,714 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-13 16:56:41,717 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:56:41,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:41,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,735 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-13 16:56:41,737 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 16:56:41,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:56:41,750 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:56:41,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:56:41,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:56:41,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:56:41,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:56:41,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:56:41,754 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:56:41,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-13 16:56:41,757 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-13 16:56:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:56:41,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:56:41,759 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-13 16:56:41,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-13 16:56:41,762 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:56:41,762 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:56:41,762 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:56:41,762 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~i~0#1 - 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2024-10-13 16:56:41,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:41,778 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:56:41,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,817 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,817 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 16:56:41,818 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 16:56:41,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:41,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 32 transitions. Complement of second has 3 states. [2024-10-13 16:56:41,830 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 16:56:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2024-10-13 16:56:41,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2024-10-13 16:56:41,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,831 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-13 16:56:41,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,871 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,872 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 16:56:41,872 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-13 16:56:41,872 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:41,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 32 transitions. Complement of second has 3 states. [2024-10-13 16:56:41,882 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 16:56:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2024-10-13 16:56:41,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2024-10-13 16:56:41,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,884 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-13 16:56:41,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:56:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:56:41,920 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:56:41,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:56:41,920 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 16:56:41,921 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-13 16:56:41,921 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:41,928 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 29 transitions. Complement of second has 2 states. [2024-10-13 16:56:41,929 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 16:56:41,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:56:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-10-13 16:56:41,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2024-10-13 16:56:41,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 9 letters. Loop has 1 letters. [2024-10-13 16:56:41,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2024-10-13 16:56:41,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:56:41,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 29 transitions. [2024-10-13 16:56:41,931 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:56:41,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2024-10-13 16:56:41,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-13 16:56:41,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-13 16:56:41,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-13 16:56:41,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:56:41,931 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:56:41,931 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:56:41,931 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:56:41,931 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-13 16:56:41,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-13 16:56:41,932 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:56:41,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-13 16:56:41,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 04:56:41 BoogieIcfgContainer [2024-10-13 16:56:41,939 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-13 16:56:41,939 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:56:41,939 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:56:41,939 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:56:41,940 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:56:39" (3/4) ... [2024-10-13 16:56:41,941 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-13 16:56:41,942 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:56:41,943 INFO L158 Benchmark]: Toolchain (without parser) took 3366.14ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 76.8MB in the beginning and 84.1MB in the end (delta: -7.3MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2024-10-13 16:56:41,943 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 132.1MB. Free memory was 64.9MB in the beginning and 64.7MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:56:41,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.25ms. Allocated memory is still 132.1MB. Free memory was 76.4MB in the beginning and 65.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 16:56:41,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.87ms. Allocated memory is still 132.1MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:56:41,944 INFO L158 Benchmark]: Boogie Preprocessor took 26.09ms. Allocated memory is still 132.1MB. Free memory was 64.2MB in the beginning and 62.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:56:41,944 INFO L158 Benchmark]: RCFGBuilder took 231.30ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 62.9MB in the beginning and 155.3MB in the end (delta: -92.4MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-10-13 16:56:41,944 INFO L158 Benchmark]: BuchiAutomizer took 2834.82ms. Allocated memory is still 186.6MB. Free memory was 155.3MB in the beginning and 84.1MB in the end (delta: 71.2MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2024-10-13 16:56:41,945 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 186.6MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:56:41,946 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 132.1MB. Free memory was 64.9MB in the beginning and 64.7MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.25ms. Allocated memory is still 132.1MB. Free memory was 76.4MB in the beginning and 65.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.87ms. Allocated memory is still 132.1MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.09ms. Allocated memory is still 132.1MB. Free memory was 64.2MB in the beginning and 62.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.30ms. Allocated memory was 132.1MB in the beginning and 186.6MB in the end (delta: 54.5MB). Free memory was 62.9MB in the beginning and 155.3MB in the end (delta: -92.4MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 2834.82ms. Allocated memory is still 186.6MB. Free memory was 155.3MB in the beginning and 84.1MB in the end (delta: 71.2MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 186.6MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function ((long) -1 * i) and consists of 6 locations. One deterministic module has affine ranking function (((long) -1 * i) + n) and consists of 4 locations. One deterministic module has affine ranking function ((((long) -2 * j) + ((long) 2 * i)) + 1) and consists of 2 locations. One nondeterministic module has affine ranking function ((((long) -2 * j) + ((long) 2 * i)) + 1) and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 29 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax194 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s 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 16:56:41,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-13 16:56:42,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:42,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-13 16:56:42,568 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