./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/McCarthy91_Recursion.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4a390ef5 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/McCarthy91_Recursion.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 b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:47:28,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:47:28,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-24 23:47:28,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:47:28,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:47:28,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:47:28,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:47:28,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:47:28,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:47:28,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:47:28,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:47:28,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:47:28,096 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:47:28,096 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-24 23:47:28,097 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-24 23:47:28,097 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-24 23:47:28,097 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-24 23:47:28,098 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-24 23:47:28,099 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-24 23:47:28,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:47:28,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-24 23:47:28,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:47:28,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:47:28,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-24 23:47:28,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-24 23:47:28,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-24 23:47:28,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:47:28,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:47:28,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:47:28,101 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-24 23:47:28,101 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:47:28,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:47:28,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:47:28,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:47:28,102 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:47:28,102 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-24 23:47:28,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d53423478efbe88c69a2c2de1bb984f61e7e586fd7bb6761452f26ace425f7 [2024-10-24 23:47:28,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:47:28,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:47:28,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:47:28,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:47:28,349 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:47:28,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2024-10-24 23:47:29,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:47:29,848 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:47:29,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/McCarthy91_Recursion.c [2024-10-24 23:47:29,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b241507e9/240bf19de79646e590cb6e58d0fd344f/FLAG87e78298d [2024-10-24 23:47:29,870 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b241507e9/240bf19de79646e590cb6e58d0fd344f [2024-10-24 23:47:29,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:47:29,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:47:29,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:47:29,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:47:29,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:47:29,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:47:29" (1/1) ... [2024-10-24 23:47:29,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee69101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:29, skipping insertion in model container [2024-10-24 23:47:29,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:47:29" (1/1) ... [2024-10-24 23:47:29,897 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:47:30,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:47:30,028 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:47:30,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:47:30,050 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:47:30,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30 WrapperNode [2024-10-24 23:47:30,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:47:30,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:47:30,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:47:30,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:47:30,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,069 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2024-10-24 23:47:30,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:47:30,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:47:30,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:47:30,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:47:30,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,081 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-24 23:47:30,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:47:30,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:47:30,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:47:30,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:47:30,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (1/1) ... [2024-10-24 23:47:30,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:30,110 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) [2024-10-24 23:47:30,112 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 [2024-10-24 23:47:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:47:30,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:47:30,146 INFO L130 BoogieDeclarations]: Found specification of procedure mc91 [2024-10-24 23:47:30,147 INFO L138 BoogieDeclarations]: Found implementation of procedure mc91 [2024-10-24 23:47:30,188 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:47:30,190 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:47:30,252 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-24 23:47:30,252 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:47:30,284 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:47:30,284 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 23:47:30,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:47:30 BoogieIcfgContainer [2024-10-24 23:47:30,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:47:30,286 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-24 23:47:30,286 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-24 23:47:30,290 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-24 23:47:30,290 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:47:30,291 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.10 11:47:29" (1/3) ... [2024-10-24 23:47:30,291 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76bd616d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:47:30, skipping insertion in model container [2024-10-24 23:47:30,292 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:47:30,292 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:30" (2/3) ... [2024-10-24 23:47:30,293 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76bd616d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:47:30, skipping insertion in model container [2024-10-24 23:47:30,293 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:47:30,293 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:47:30" (3/3) ... [2024-10-24 23:47:30,294 INFO L332 chiAutomizerObserver]: Analyzing ICFG McCarthy91_Recursion.c [2024-10-24 23:47:30,357 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-24 23:47:30,358 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-24 23:47:30,358 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-24 23:47:30,358 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-24 23:47:30,358 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-24 23:47:30,358 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-24 23:47:30,359 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-24 23:47:30,359 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-24 23:47:30,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 23:47:30,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-24 23:47:30,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:30,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:30,382 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:47:30,383 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:30,383 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-24 23:47:30,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 23:47:30,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-24 23:47:30,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:30,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:30,385 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:47:30,385 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:30,391 INFO L745 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 2#L16true call main_#t~ret3#1 := mc91(main_~x~0#1);< 11#$Ultimate##0true [2024-10-24 23:47:30,392 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 8#L10true assume !(~n > 100); 9#L11true call #t~ret0 := mc91(11 + ~n);< 11#$Ultimate##0true [2024-10-24 23:47:30,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:30,399 INFO L85 PathProgramCache]: Analyzing trace with hash 29870, now seen corresponding path program 1 times [2024-10-24 23:47:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130450629] [2024-10-24 23:47:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:30,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:30,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:30,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:30,474 INFO L85 PathProgramCache]: Analyzing trace with hash 37870, now seen corresponding path program 1 times [2024-10-24 23:47:30,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:30,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927728854] [2024-10-24 23:47:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:30,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:30,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:30,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash 889865249, now seen corresponding path program 1 times [2024-10-24 23:47:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:30,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81514742] [2024-10-24 23:47:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:30,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:30,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:30,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:30,550 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:30,550 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:30,551 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:30,551 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:30,551 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:30,551 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,551 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:30,551 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:30,551 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration1_Loop [2024-10-24 23:47:30,551 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:30,552 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:30,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,614 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:30,614 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:30,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:30,618 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) [2024-10-24 23:47:30,619 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 [2024-10-24 23:47:30,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:30,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:30,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:30,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:30,648 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) [2024-10-24 23:47:30,649 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 [2024-10-24 23:47:30,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:30,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:30,682 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:30,686 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 [2024-10-24 23:47:30,687 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:30,687 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:30,687 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:30,687 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:30,687 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:30,687 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,687 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:30,687 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:30,687 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration1_Loop [2024-10-24 23:47:30,688 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:30,688 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:30,689 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,697 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,702 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:30,734 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:30,739 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:30,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:30,741 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) [2024-10-24 23:47:30,742 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 [2024-10-24 23:47:30,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:47:30,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:30,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:30,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:30,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:30,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:30,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:30,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:30,763 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:30,767 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:30,767 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:30,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:30,770 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) [2024-10-24 23:47:30,771 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 [2024-10-24 23:47:30,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:30,774 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:30,774 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:30,775 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(mc91_#in~n) = -2*mc91_#in~n + 211 Supporting invariants [] [2024-10-24 23:47:30,788 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 [2024-10-24 23:47:30,800 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:30,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:30,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:47:30,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:30,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:30,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:30,918 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 [2024-10-24 23:47:30,919 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:47:31,001 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 39 transitions. Complement of second has 16 states. [2024-10-24 23:47:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:47:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2024-10-24 23:47:31,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2024-10-24 23:47:31,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:31,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2024-10-24 23:47:31,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:31,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2024-10-24 23:47:31,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:31,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2024-10-24 23:47:31,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-24 23:47:31,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 19 states and 25 transitions. [2024-10-24 23:47:31,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-10-24 23:47:31,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-10-24 23:47:31,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2024-10-24 23:47:31,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:31,021 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-24 23:47:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2024-10-24 23:47:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-10-24 23:47:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 23:47:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-10-24 23:47:31,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-24 23:47:31,053 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-24 23:47:31,053 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-24 23:47:31,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2024-10-24 23:47:31,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-24 23:47:31,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:31,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:31,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:31,056 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:31,056 INFO L745 eck$LassoCheckResult]: Stem: 114#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 115#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 107#L16 call main_#t~ret3#1 := mc91(main_~x~0#1);< 109#$Ultimate##0 ~n := #in~n; 112#L10 assume !(~n > 100); 106#L11 call #t~ret0 := mc91(11 + ~n);< 108#$Ultimate##0 ~n := #in~n; 113#L10 assume ~n > 100;#res := ~n - 10; 110#mc91FINAL assume true; 111#mc91EXIT >#20#return; 104#L11-1 [2024-10-24 23:47:31,057 INFO L747 eck$LassoCheckResult]: Loop: 104#L11-1 call #t~ret1 := mc91(#t~ret0);< 105#$Ultimate##0 ~n := #in~n; 118#L10 assume !(~n > 100); 103#L11 call #t~ret0 := mc91(11 + ~n);< 105#$Ultimate##0 ~n := #in~n; 118#L10 assume ~n > 100;#res := ~n - 10; 117#mc91FINAL assume true; 119#mc91EXIT >#20#return; 104#L11-1 [2024-10-24 23:47:31,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1612519912, now seen corresponding path program 1 times [2024-10-24 23:47:31,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2161012] [2024-10-24 23:47:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:31,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:31,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:31,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -696734814, now seen corresponding path program 1 times [2024-10-24 23:47:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311107909] [2024-10-24 23:47:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:31,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:31,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:31,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1110240905, now seen corresponding path program 1 times [2024-10-24 23:47:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:31,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504619262] [2024-10-24 23:47:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:31,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:31,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:31,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:31,256 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:31,257 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:31,257 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:31,257 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:31,257 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:31,258 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:31,258 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:31,258 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:31,258 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration2_Loop [2024-10-24 23:47:31,258 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:31,258 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:31,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:31,269 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:31,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:31,311 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:31,311 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:31,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:31,313 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) [2024-10-24 23:47:31,315 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 [2024-10-24 23:47:31,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:31,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:31,330 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:31,330 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mc91_#t~ret1=0} Honda state: {mc91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:31,341 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 [2024-10-24 23:47:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:31,343 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) [2024-10-24 23:47:31,344 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 [2024-10-24 23:47:31,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:31,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:31,357 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:31,357 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mc91_#res=0} Honda state: {mc91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:31,368 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 [2024-10-24 23:47:31,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:31,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:31,369 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) [2024-10-24 23:47:31,370 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 [2024-10-24 23:47:31,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:31,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:31,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-24 23:47:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:31,413 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) [2024-10-24 23:47:31,418 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 [2024-10-24 23:47:31,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:31,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:43,466 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-24 23:47:43,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-24 23:47:43,478 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:43,478 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:43,478 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:43,478 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:43,478 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:43,478 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,478 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:43,478 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:43,478 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration2_Loop [2024-10-24 23:47:43,478 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:43,478 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:43,479 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:43,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:43,492 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:43,531 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:43,531 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:43,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:43,534 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) [2024-10-24 23:47:43,542 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 [2024-10-24 23:47:43,543 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 [2024-10-24 23:47:43,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:43,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:43,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:43,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:43,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:43,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:43,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:43,558 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:43,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-24 23:47:43,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:43,575 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) [2024-10-24 23:47:43,576 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 [2024-10-24 23:47:43,578 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 [2024-10-24 23:47:43,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:43,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:43,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:43,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:43,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:43,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:43,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:43,593 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:43,596 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:43,596 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:43,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:43,599 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) [2024-10-24 23:47:43,604 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 [2024-10-24 23:47:43,606 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:43,606 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:43,606 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:43,606 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(mc91_#t~ret0) = -2*mc91_#t~ret0 + 201 Supporting invariants [] [2024-10-24 23:47:43,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-24 23:47:43,620 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:43,625 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret0 [2024-10-24 23:47:43,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:43,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:47:43,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:43,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:47:43,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:43,843 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-24 23:47:43,843 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 23:47:43,984 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 51 states and 73 transitions. Complement of second has 32 states. [2024-10-24 23:47:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 23:47:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-24 23:47:44,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 8 letters. [2024-10-24 23:47:44,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:44,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 18 letters. Loop has 8 letters. [2024-10-24 23:47:44,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:44,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 10 letters. Loop has 16 letters. [2024-10-24 23:47:44,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:44,012 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 73 transitions. [2024-10-24 23:47:44,015 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2024-10-24 23:47:44,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 42 states and 62 transitions. [2024-10-24 23:47:44,023 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-24 23:47:44,023 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2024-10-24 23:47:44,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 62 transitions. [2024-10-24 23:47:44,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:44,024 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2024-10-24 23:47:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 62 transitions. [2024-10-24 23:47:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-10-24 23:47:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 7 states have call successors, (12) [2024-10-24 23:47:44,032 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 [2024-10-24 23:47:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2024-10-24 23:47:44,035 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-24 23:47:44,035 INFO L425 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-24 23:47:44,035 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-24 23:47:44,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2024-10-24 23:47:44,036 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2024-10-24 23:47:44,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:44,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:44,042 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:44,042 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:44,042 INFO L745 eck$LassoCheckResult]: Stem: 306#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 307#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 288#L16 call main_#t~ret3#1 := mc91(main_~x~0#1);< 289#$Ultimate##0 ~n := #in~n; 302#L10 assume !(~n > 100); 295#L11 call #t~ret0 := mc91(11 + ~n);< 296#$Ultimate##0 ~n := #in~n; 305#L10 assume ~n > 100;#res := ~n - 10; 321#mc91FINAL assume true; 319#mc91EXIT >#20#return; 293#L11-1 call #t~ret1 := mc91(#t~ret0);< 314#$Ultimate##0 ~n := #in~n; 323#L10 assume !(~n > 100); 290#L11 [2024-10-24 23:47:44,042 INFO L747 eck$LassoCheckResult]: Loop: 290#L11 call #t~ret0 := mc91(11 + ~n);< 291#$Ultimate##0 ~n := #in~n; 315#L10 assume !(~n > 100); 290#L11 [2024-10-24 23:47:44,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:44,042 INFO L85 PathProgramCache]: Analyzing trace with hash -628486927, now seen corresponding path program 2 times [2024-10-24 23:47:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:44,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238695113] [2024-10-24 23:47:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:44,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:44,056 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 [2024-10-24 23:47:44,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:44,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:44,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash 48310, now seen corresponding path program 2 times [2024-10-24 23:47:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726583195] [2024-10-24 23:47:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:44,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:44,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:44,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1491580474, now seen corresponding path program 3 times [2024-10-24 23:47:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:44,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616097456] [2024-10-24 23:47:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:44,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:44,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 23:47:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:47:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616097456] [2024-10-24 23:47:44,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616097456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:47:44,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:47:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 23:47:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231532577] [2024-10-24 23:47:44,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:47:44,233 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:44,233 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:44,233 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:44,233 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:44,233 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:44,234 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:44,234 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:44,234 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:44,234 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration3_Loop [2024-10-24 23:47:44,234 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:44,234 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:44,234 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,239 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,266 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:44,267 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:44,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:44,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:44,268 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) [2024-10-24 23:47:44,269 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 [2024-10-24 23:47:44,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:44,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:44,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-24 23:47:44,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:44,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:44,304 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) [2024-10-24 23:47:44,305 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 [2024-10-24 23:47:44,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:44,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:56,338 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-24 23:47:56,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:56,347 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:56,348 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:56,348 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:56,348 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:56,348 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:56,348 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:56,348 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:56,348 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:56,348 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration3_Loop [2024-10-24 23:47:56,348 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:56,348 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:56,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:56,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:56,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:56,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:56,388 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:56,388 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:56,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:56,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:56,393 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) [2024-10-24 23:47:56,394 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 [2024-10-24 23:47:56,395 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 [2024-10-24 23:47:56,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:56,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:56,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:56,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:56,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:56,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:56,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:56,409 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:56,412 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:56,412 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:56,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:56,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:56,413 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) [2024-10-24 23:47:56,414 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 [2024-10-24 23:47:56,415 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:56,415 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:56,415 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:56,415 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(mc91_~n) = -2*mc91_~n + 189 Supporting invariants [] [2024-10-24 23:47:56,426 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 [2024-10-24 23:47:56,427 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:56,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:56,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:47:56,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:56,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:56,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:56,532 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-24 23:47:56,532 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2024-10-24 23:47:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-10-24 23:47:56,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-24 23:47:56,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:56,579 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:56,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:56,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:47:56,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:56,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:56,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:56,674 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-24 23:47:56,674 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 43 states and 59 transitions. Complement of second has 13 states. [2024-10-24 23:47:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-10-24 23:47:56,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-24 23:47:56,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:56,713 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:56,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:56,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:47:56,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:56,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:56,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:56,808 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-24 23:47:56,809 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19 Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,858 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 51 transitions. cyclomatic complexity: 19. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 71 states and 100 transitions. Complement of second has 16 states. [2024-10-24 23:47:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2024-10-24 23:47:56,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-24 23:47:56,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:56,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 16 letters. Loop has 3 letters. [2024-10-24 23:47:56,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:56,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 13 letters. Loop has 6 letters. [2024-10-24 23:47:56,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:56,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 100 transitions. [2024-10-24 23:47:56,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-10-24 23:47:56,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 48 states and 74 transitions. [2024-10-24 23:47:56,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-24 23:47:56,865 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2024-10-24 23:47:56,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 74 transitions. [2024-10-24 23:47:56,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:56,865 INFO L218 hiAutomatonCegarLoop]: Abstraction has 48 states and 74 transitions. [2024-10-24 23:47:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 74 transitions. [2024-10-24 23:47:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-10-24 23:47:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 11 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-24 23:47:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2024-10-24 23:47:56,869 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 60 transitions. [2024-10-24 23:47:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:47:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:47:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:47:56,872 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 23:47:56,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:47:56,942 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2024-10-24 23:47:56,943 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2024-10-24 23:47:56,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-24 23:47:56,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 58 states and 75 transitions. [2024-10-24 23:47:56,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-10-24 23:47:56,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-10-24 23:47:56,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 75 transitions. [2024-10-24 23:47:56,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:56,946 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 75 transitions. [2024-10-24 23:47:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 75 transitions. [2024-10-24 23:47:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-10-24 23:47:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 37 states have internal predecessors, (37), 13 states have call successors, (18), 11 states have call predecessors, (18), 9 states have return successors, (19), 8 states have call predecessors, (19), 11 states have call successors, (19) [2024-10-24 23:47:56,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-10-24 23:47:56,950 INFO L240 hiAutomatonCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-24 23:47:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:47:56,951 INFO L425 stractBuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-24 23:47:56,951 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-24 23:47:56,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 74 transitions. [2024-10-24 23:47:56,952 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-24 23:47:56,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:56,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:56,953 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:47:56,953 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-10-24 23:47:56,954 INFO L745 eck$LassoCheckResult]: Stem: 852#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 853#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 834#L16 call main_#t~ret3#1 := mc91(main_~x~0#1);< 836#$Ultimate##0 ~n := #in~n; 859#L10 assume !(~n > 100); 833#L11 call #t~ret0 := mc91(11 + ~n);< 835#$Ultimate##0 ~n := #in~n; 868#L10 assume !(~n > 100); 864#L11 call #t~ret0 := mc91(11 + ~n);< 866#$Ultimate##0 ~n := #in~n; 869#L10 assume ~n > 100;#res := ~n - 10; 867#mc91FINAL assume true; 865#mc91EXIT >#20#return; 846#L11-1 call #t~ret1 := mc91(#t~ret0);< 844#$Ultimate##0 ~n := #in~n; 847#L10 assume ~n > 100;#res := ~n - 10; 858#mc91FINAL assume true; 884#mc91EXIT >#22#return; 860#L11-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 882#mc91FINAL assume true; 881#mc91EXIT >#20#return; 838#L11-1 call #t~ret1 := mc91(#t~ret0);< 856#$Ultimate##0 [2024-10-24 23:47:56,954 INFO L747 eck$LassoCheckResult]: Loop: 856#$Ultimate##0 ~n := #in~n; 874#L10 assume !(~n > 100); 849#L11 call #t~ret0 := mc91(11 + ~n);< 848#$Ultimate##0 ~n := #in~n; 851#L10 assume !(~n > 100); 850#L11 call #t~ret0 := mc91(11 + ~n);< 870#$Ultimate##0 ~n := #in~n; 880#L10 assume ~n > 100;#res := ~n - 10; 878#mc91FINAL assume true; 876#mc91EXIT >#20#return; 830#L11-1 call #t~ret1 := mc91(#t~ret0);< 873#$Ultimate##0 ~n := #in~n; 871#L10 assume ~n > 100;#res := ~n - 10; 872#mc91FINAL assume true; 883#mc91EXIT >#22#return; 860#L11-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 882#mc91FINAL assume true; 881#mc91EXIT >#20#return; 839#L11-1 call #t~ret1 := mc91(#t~ret0);< 856#$Ultimate##0 [2024-10-24 23:47:56,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1678623115, now seen corresponding path program 1 times [2024-10-24 23:47:56,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:56,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452386349] [2024-10-24 23:47:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:56,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:56,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:56,967 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:56,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:56,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2037590184, now seen corresponding path program 1 times [2024-10-24 23:47:56,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:56,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880303796] [2024-10-24 23:47:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:56,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:56,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:56,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:56,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1698366862, now seen corresponding path program 2 times [2024-10-24 23:47:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:56,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183676693] [2024-10-24 23:47:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:56,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 23:47:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:57,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 23:47:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 23:47:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183676693] [2024-10-24 23:47:57,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183676693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:47:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250445113] [2024-10-24 23:47:57,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:47:57,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:47:57,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:57,256 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:47:57,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 23:47:57,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:47:57,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:47:57,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:47:57,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 23:47:57,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:47:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 23:47:57,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250445113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:47:57,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:47:57,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2024-10-24 23:47:57,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783236518] [2024-10-24 23:47:57,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:47:57,685 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:57,685 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:57,685 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:57,685 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:57,685 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:57,685 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:57,685 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:57,686 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:57,686 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration4_Loop [2024-10-24 23:47:57,686 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:57,686 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:57,686 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,694 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,697 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,724 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:57,725 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:57,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:57,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:57,730 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) [2024-10-24 23:47:57,740 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 [2024-10-24 23:47:57,741 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:57,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:57,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-24 23:47:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:57,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:57,778 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) [2024-10-24 23:47:57,779 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 [2024-10-24 23:47:57,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:57,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:57,795 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:57,805 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 [2024-10-24 23:47:57,806 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:57,806 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:57,806 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:57,806 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:57,806 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:57,806 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:57,806 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:57,806 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:57,806 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration4_Loop [2024-10-24 23:47:57,806 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:57,806 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:57,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:57,834 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:57,834 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:57,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:57,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:57,839 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) [2024-10-24 23:47:57,844 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 [2024-10-24 23:47:57,844 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 [2024-10-24 23:47:57,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:57,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:57,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:57,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:57,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:57,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:57,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:57,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:57,861 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:57,862 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:57,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:57,863 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) [2024-10-24 23:47:57,865 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 [2024-10-24 23:47:57,869 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:57,869 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:57,870 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:57,870 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(mc91_#in~n) = -1*mc91_#in~n + 90 Supporting invariants [] [2024-10-24 23:47:57,880 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 [2024-10-24 23:47:57,881 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:57,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:57,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 23:47:57,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:58,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 23:47:58,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 23:47:58,248 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-24 23:47:58,248 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 23:47:58,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 49 states. [2024-10-24 23:47:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 23:47:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 35 transitions. [2024-10-24 23:47:58,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 35 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-24 23:47:58,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:58,575 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:58,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:58,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 23:47:58,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:58,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:58,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 23:47:58,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 23:47:58,946 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-24 23:47:58,946 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 23:47:59,200 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 125 states and 150 transitions. Complement of second has 49 states. [2024-10-24 23:47:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2024-10-24 23:47:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 23:47:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 35 transitions. [2024-10-24 23:47:59,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 35 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-24 23:47:59,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:59,201 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:59,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:59,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 23:47:59,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:59,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 23:47:59,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 23:47:59,489 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-24 23:47:59,489 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21 Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 23:48:00,044 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 74 transitions. cyclomatic complexity: 21. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Result 431 states and 531 transitions. Complement of second has 224 states. [2024-10-24 23:48:00,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 21 states 2 stem states 18 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 6 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-24 23:48:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 50 transitions. [2024-10-24 23:48:00,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 50 transitions. Stem has 22 letters. Loop has 19 letters. [2024-10-24 23:48:00,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:00,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 50 transitions. Stem has 41 letters. Loop has 19 letters. [2024-10-24 23:48:00,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:00,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 21 states and 50 transitions. Stem has 22 letters. Loop has 38 letters. [2024-10-24 23:48:00,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:00,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 531 transitions. [2024-10-24 23:48:00,062 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2024-10-24 23:48:00,069 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 203 states and 269 transitions. [2024-10-24 23:48:00,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2024-10-24 23:48:00,069 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2024-10-24 23:48:00,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 269 transitions. [2024-10-24 23:48:00,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:48:00,069 INFO L218 hiAutomatonCegarLoop]: Abstraction has 203 states and 269 transitions. [2024-10-24 23:48:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 269 transitions. [2024-10-24 23:48:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 157. [2024-10-24 23:48:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.092783505154639) internal successors, (106), 99 states have internal predecessors, (106), 35 states have call successors, (45), 29 states have call predecessors, (45), 25 states have return successors, (47), 28 states have call predecessors, (47), 32 states have call successors, (47) [2024-10-24 23:48:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 198 transitions. [2024-10-24 23:48:00,083 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 198 transitions. [2024-10-24 23:48:00,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:48:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 23:48:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-24 23:48:00,084 INFO L87 Difference]: Start difference. First operand 157 states and 198 transitions. Second operand has 17 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 23:48:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:48:00,221 INFO L93 Difference]: Finished difference Result 159 states and 188 transitions. [2024-10-24 23:48:00,221 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 188 transitions. [2024-10-24 23:48:00,223 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-24 23:48:00,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 104 states and 123 transitions. [2024-10-24 23:48:00,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2024-10-24 23:48:00,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2024-10-24 23:48:00,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 123 transitions. [2024-10-24 23:48:00,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:48:00,225 INFO L218 hiAutomatonCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-10-24 23:48:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 123 transitions. [2024-10-24 23:48:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2024-10-24 23:48:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 21 states have call successors, (28), 20 states have call predecessors, (28), 16 states have return successors, (25), 15 states have call predecessors, (25), 18 states have call successors, (25) [2024-10-24 23:48:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2024-10-24 23:48:00,229 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 119 transitions. [2024-10-24 23:48:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 23:48:00,230 INFO L425 stractBuchiCegarLoop]: Abstraction has 100 states and 119 transitions. [2024-10-24 23:48:00,230 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-24 23:48:00,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 119 transitions. [2024-10-24 23:48:00,230 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-24 23:48:00,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:00,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:00,231 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2024-10-24 23:48:00,231 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:48:00,231 INFO L745 eck$LassoCheckResult]: Stem: 3030#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3031#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 3009#L16 call main_#t~ret3#1 := mc91(main_~x~0#1);< 3010#$Ultimate##0 ~n := #in~n; 3048#L10 assume !(~n > 100); 3049#L11 call #t~ret0 := mc91(11 + ~n);< 3050#$Ultimate##0 ~n := #in~n; 3052#L10 assume !(~n > 100); 3051#L11 call #t~ret0 := mc91(11 + ~n);< 3068#$Ultimate##0 ~n := #in~n; 3070#L10 assume ~n > 100;#res := ~n - 10; 3069#mc91FINAL assume true; 3067#mc91EXIT >#20#return; 3064#L11-1 call #t~ret1 := mc91(#t~ret0);< 3066#$Ultimate##0 ~n := #in~n; 3072#L10 assume ~n > 100;#res := ~n - 10; 3071#mc91FINAL assume true; 3063#mc91EXIT >#22#return; 3061#L11-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 3059#mc91FINAL assume true; 3058#mc91EXIT >#20#return; 3053#L11-1 call #t~ret1 := mc91(#t~ret0);< 3057#$Ultimate##0 ~n := #in~n; 3055#L10 assume !(~n > 100); 3015#L11 call #t~ret0 := mc91(11 + ~n);< 3017#$Ultimate##0 ~n := #in~n; 3060#L10 assume !(~n > 100); 3014#L11 call #t~ret0 := mc91(11 + ~n);< 3016#$Ultimate##0 ~n := #in~n; 3108#L10 assume ~n > 100;#res := ~n - 10; 3104#mc91FINAL assume true; 3103#mc91EXIT >#20#return; 3012#L11-1 [2024-10-24 23:48:00,231 INFO L747 eck$LassoCheckResult]: Loop: 3012#L11-1 call #t~ret1 := mc91(#t~ret0);< 3036#$Ultimate##0 ~n := #in~n; 3105#L10 assume !(~n > 100); 3011#L11 call #t~ret0 := mc91(11 + ~n);< 3013#$Ultimate##0 ~n := #in~n; 3107#L10 assume ~n > 100;#res := ~n - 10; 3106#mc91FINAL assume true; 3102#mc91EXIT >#20#return; 3012#L11-1 [2024-10-24 23:48:00,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1028640846, now seen corresponding path program 3 times [2024-10-24 23:48:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635236664] [2024-10-24 23:48:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:00,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 23:48:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:00,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:48:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:00,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:48:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:00,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 23:48:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-24 23:48:00,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:48:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635236664] [2024-10-24 23:48:00,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635236664] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:48:00,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183692373] [2024-10-24 23:48:00,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 23:48:00,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:48:00,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:00,339 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:48:00,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-24 23:48:00,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-24 23:48:00,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:48:00,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:48:00,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 23:48:00,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:48:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183692373] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:48:00,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:48:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2024-10-24 23:48:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42593196] [2024-10-24 23:48:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:48:00,408 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-24 23:48:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -696734814, now seen corresponding path program 2 times [2024-10-24 23:48:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906390960] [2024-10-24 23:48:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:00,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:00,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:00,503 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:00,503 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:00,504 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:00,504 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:00,504 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:48:00,504 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:00,504 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:00,504 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:00,504 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration5_Loop [2024-10-24 23:48:00,504 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:00,504 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:00,505 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:00,506 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:00,512 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:00,532 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:00,532 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:48:00,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:00,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:00,534 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) [2024-10-24 23:48:00,535 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 [2024-10-24 23:48:00,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:00,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:00,547 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:48:00,547 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mc91_#res=0} Honda state: {mc91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:48:00,557 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 [2024-10-24 23:48:00,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:00,559 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) [2024-10-24 23:48:00,560 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 [2024-10-24 23:48:00,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:00,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:00,590 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 [2024-10-24 23:48:00,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:00,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:00,591 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) [2024-10-24 23:48:00,592 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 [2024-10-24 23:48:00,593 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:48:00,593 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:12,643 INFO L403 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2024-10-24 23:48:12,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:12,654 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:12,654 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:12,654 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:12,654 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:12,654 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:48:12,654 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:12,654 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:12,654 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:12,654 INFO L132 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Recursion.c_Iteration5_Loop [2024-10-24 23:48:12,654 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:12,654 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:12,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:12,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:12,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:12,691 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:12,692 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:48:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:12,693 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:12,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-24 23:48:12,697 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 [2024-10-24 23:48:12,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:12,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:48:12,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:12,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:12,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:12,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:48:12,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:48:12,714 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:48:12,717 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:48:12,717 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:48:12,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:12,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:12,718 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:12,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-24 23:48:12,724 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:48:12,724 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:48:12,724 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:48:12,724 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(mc91_#t~ret0) = -2*mc91_#t~ret0 + 201 Supporting invariants [] [2024-10-24 23:48:12,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:12,741 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:48:12,742 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret0 [2024-10-24 23:48:12,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:12,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:48:12,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:12,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:48:12,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:12,966 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-24 23:48:12,966 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 23:48:13,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 139 states and 161 transitions. Complement of second has 24 states. [2024-10-24 23:48:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 23:48:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-24 23:48:13,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2024-10-24 23:48:13,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:13,095 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:48:13,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:13,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:13,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:48:13,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:13,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:48:13,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:13,332 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-24 23:48:13,332 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 23:48:13,441 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 139 states and 161 transitions. Complement of second has 24 states. [2024-10-24 23:48:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 23:48:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2024-10-24 23:48:13,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 32 letters. Loop has 8 letters. [2024-10-24 23:48:13,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:13,443 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:48:13,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:13,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:48:13,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:13,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:48:13,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:13,763 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-24 23:48:13,763 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24 Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 23:48:13,950 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 119 transitions. cyclomatic complexity: 24. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 181 states and 211 transitions. Complement of second has 27 states. [2024-10-24 23:48:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 23:48:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 21 transitions. [2024-10-24 23:48:13,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 8 letters. [2024-10-24 23:48:13,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:13,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 40 letters. Loop has 8 letters. [2024-10-24 23:48:13,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:13,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 21 transitions. Stem has 32 letters. Loop has 16 letters. [2024-10-24 23:48:13,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:13,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 181 states and 211 transitions. [2024-10-24 23:48:13,962 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:48:13,962 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 181 states to 0 states and 0 transitions. [2024-10-24 23:48:13,962 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-24 23:48:13,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-24 23:48:13,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-24 23:48:13,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-24 23:48:13,963 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:13,963 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:48:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 23:48:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:48:13,967 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 23:48:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:48:13,967 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-24 23:48:13,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-24 23:48:13,967 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:48:13,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 23:48:13,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-24 23:48:13,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-24 23:48:13,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-24 23:48:13,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-24 23:48:13,967 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:13,967 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 23:48:13,968 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:13,968 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-24 23:48:13,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-24 23:48:13,968 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:48:13,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-24 23:48:13,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.10 11:48:13 BoogieIcfgContainer [2024-10-24 23:48:13,981 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-24 23:48:13,982 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:48:13,982 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:48:13,982 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:48:13,982 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:47:30" (3/4) ... [2024-10-24 23:48:13,984 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 23:48:13,985 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:48:13,989 INFO L158 Benchmark]: Toolchain (without parser) took 44114.56ms. Allocated memory was 197.1MB in the beginning and 245.4MB in the end (delta: 48.2MB). Free memory was 125.8MB in the beginning and 108.6MB in the end (delta: 17.2MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2024-10-24 23:48:13,989 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 197.1MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:13,989 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.80ms. Allocated memory is still 197.1MB. Free memory was 125.6MB in the beginning and 114.9MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 23:48:13,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.77ms. Allocated memory is still 197.1MB. Free memory was 114.9MB in the beginning and 113.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:13,990 INFO L158 Benchmark]: Boogie Preprocessor took 14.84ms. Allocated memory is still 197.1MB. Free memory was 113.5MB in the beginning and 112.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:48:13,990 INFO L158 Benchmark]: RCFGBuilder took 200.23ms. Allocated memory is still 197.1MB. Free memory was 112.1MB in the beginning and 165.4MB in the end (delta: -53.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-10-24 23:48:13,990 INFO L158 Benchmark]: BuchiAutomizer took 43695.53ms. Allocated memory was 197.1MB in the beginning and 245.4MB in the end (delta: 48.2MB). Free memory was 165.4MB in the beginning and 109.6MB in the end (delta: 55.8MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. [2024-10-24 23:48:13,991 INFO L158 Benchmark]: Witness Printer took 6.31ms. Allocated memory is still 245.4MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:13,992 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 197.1MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.80ms. Allocated memory is still 197.1MB. Free memory was 125.6MB in the beginning and 114.9MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.77ms. Allocated memory is still 197.1MB. Free memory was 114.9MB in the beginning and 113.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.84ms. Allocated memory is still 197.1MB. Free memory was 113.5MB in the beginning and 112.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 200.23ms. Allocated memory is still 197.1MB. Free memory was 112.1MB in the beginning and 165.4MB in the end (delta: -53.3MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 43695.53ms. Allocated memory was 197.1MB in the beginning and 245.4MB in the end (delta: 48.2MB). Free memory was 165.4MB in the beginning and 109.6MB in the end (delta: 55.8MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. * Witness Printer took 6.31ms. Allocated memory is still 245.4MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function (211 + ((long) -2 * \old(n))) and consists of 5 locations. One deterministic module has affine ranking function null and consists of 8 locations. One nondeterministic module has affine ranking function (((long) -2 * n) + 189) and consists of 6 locations. One nondeterministic module has affine ranking function (90 + ((long) -1 * \old(n))) and consists of 21 locations. One nondeterministic module has affine ranking function null and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 43.6s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.8s. Construction of modules took 0.5s. Büchi inclusion checks took 4.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 220 mSDsluCounter, 426 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 256 mSDsCounter, 192 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 970 IncrementalHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 192 mSolverCounterUnsat, 170 mSDtfsCounter, 970 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf90 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-24 23:48:14,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:14,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:14,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE