./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 32bit --witnessprinter.graph.data.programhash acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:59:35,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:59:35,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-12 00:59:35,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:59:35,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:59:35,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:59:35,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:59:35,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:59:35,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:59:35,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:59:35,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:59:35,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:59:35,139 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:59:35,139 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:59:35,140 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:59:35,140 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:59:35,140 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:59:35,140 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:59:35,141 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:59:35,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:59:35,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:59:35,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:59:35,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:59:35,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:59:35,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:59:35,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:59:35,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:59:35,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:59:35,143 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:59:35,143 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:59:35,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:59:35,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:59:35,144 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:59:35,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:59:35,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:59:35,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:59:35,145 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:59:35,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:59:35,145 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:59:35,145 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2024-10-12 00:59:35,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:59:35,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:59:35,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:59:35,348 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:59:35,349 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:59:35,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2024-10-12 00:59:36,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:59:36,656 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:59:36,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2024-10-12 00:59:36,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/482de3ce2/bf280edbd9a6487baa34abfdea06bd41/FLAG8356f1a48 [2024-10-12 00:59:37,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/482de3ce2/bf280edbd9a6487baa34abfdea06bd41 [2024-10-12 00:59:37,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:59:37,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:59:37,090 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:59:37,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:59:37,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:59:37,094 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,095 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57234363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37, skipping insertion in model container [2024-10-12 00:59:37,095 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:59:37,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:59:37,234 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:59:37,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:59:37,254 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:59:37,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37 WrapperNode [2024-10-12 00:59:37,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:59:37,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:59:37,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:59:37,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:59:37,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,274 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-10-12 00:59:37,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:59:37,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:59:37,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:59:37,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:59:37,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,290 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 00:59:37,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:59:37,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:59:37,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:59:37,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:59:37,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (1/1) ... [2024-10-12 00:59:37,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:37,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:37,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:37,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 00:59:37,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:59:37,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:59:37,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:59:37,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:59:37,383 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-12 00:59:37,383 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-12 00:59:37,434 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:59:37,436 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:59:37,505 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 00:59:37,505 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:59:37,518 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:59:37,519 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 00:59:37,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:59:37 BoogieIcfgContainer [2024-10-12 00:59:37,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:59:37,520 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 00:59:37,520 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 00:59:37,523 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 00:59:37,524 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:59:37,524 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 12:59:37" (1/3) ... [2024-10-12 00:59:37,525 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d110d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:59:37, skipping insertion in model container [2024-10-12 00:59:37,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:59:37,525 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:59:37" (2/3) ... [2024-10-12 00:59:37,525 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d110d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:59:37, skipping insertion in model container [2024-10-12 00:59:37,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:59:37,525 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:59:37" (3/3) ... [2024-10-12 00:59:37,526 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-1.c [2024-10-12 00:59:37,566 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 00:59:37,566 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 00:59:37,566 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 00:59:37,567 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 00:59:37,567 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 00:59:37,567 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 00:59:37,567 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 00:59:37,567 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 00:59:37,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-10-12 00:59:37,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:37,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:37,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:37,589 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:59:37,589 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 00:59:37,589 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 00:59:37,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-10-12 00:59:37,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:37,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:37,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:37,591 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:59:37,591 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 00:59:37,596 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-10-12 00:59:37,597 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-10-12 00:59:37,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-10-12 00:59:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759445978] [2024-10-12 00:59:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:37,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:37,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:37,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-10-12 00:59:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160163052] [2024-10-12 00:59:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:37,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:37,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:37,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-10-12 00:59:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069984688] [2024-10-12 00:59:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:37,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:37,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:37,815 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:37,815 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:37,815 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:37,815 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:37,815 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:37,816 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:37,816 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:37,816 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:37,816 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration1_Loop [2024-10-12 00:59:37,816 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:37,816 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:37,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:37,838 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:37,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:37,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:37,855 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:37,918 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:37,919 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:37,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:37,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:37,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:37,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 00:59:37,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:37,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:37,938 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:37,938 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:37,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 00:59:37,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:37,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:37,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:37,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 00:59:37,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:37,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:37,965 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:37,965 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:37,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:37,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:37,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:37,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 00:59:37,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:37,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:37,990 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:37,990 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:38,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-12 00:59:38,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 00:59:38,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:38,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:38,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 00:59:38,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 00:59:38,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:38,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:38,086 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:59:38,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:38,090 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:38,091 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:38,091 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:38,091 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:38,091 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:38,091 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,091 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:38,091 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:38,091 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration1_Loop [2024-10-12 00:59:38,091 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:38,091 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:38,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:38,100 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:38,102 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:38,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:38,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:38,156 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:38,161 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:38,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 00:59:38,166 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 [2024-10-12 00:59:38,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:38,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:38,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:38,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:38,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:38,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:38,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:38,182 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:38,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:38,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 00:59:38,195 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 [2024-10-12 00:59:38,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:38,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:38,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:38,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:38,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:38,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:38,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:38,209 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:38,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 00:59:38,223 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 [2024-10-12 00:59:38,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:38,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:38,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:38,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:38,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:38,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:38,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:38,235 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:38,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-12 00:59:38,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 00:59:38,249 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 [2024-10-12 00:59:38,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:38,259 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:38,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:38,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:38,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:38,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:38,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:38,264 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:38,266 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:38,266 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:59:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 00:59:38,286 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:38,286 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:38,286 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:38,286 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-10-12 00:59:38,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:38,299 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:38,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:59:38,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:38,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:38,431 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 [2024-10-12 00:59:38,433 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-12 00:59:38,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:38,547 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 41 states and 54 transitions. Complement of second has 16 states. [2024-10-12 00:59:38,550 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 [2024-10-12 00:59:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-12 00:59:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-10-12 00:59:38,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-12 00:59:38,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:38,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-10-12 00:59:38,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:38,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-12 00:59:38,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:38,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-10-12 00:59:38,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:38,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-10-12 00:59:38,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-10-12 00:59:38,567 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-12 00:59:38,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-10-12 00:59:38,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:38,569 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-10-12 00:59:38,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-10-12 00:59:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-10-12 00:59:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2024-10-12 00:59:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-10-12 00:59:38,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 00:59:38,589 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 00:59:38,589 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 00:59:38,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-10-12 00:59:38,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:38,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:38,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:38,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:38,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:38,590 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-10-12 00:59:38,590 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-10-12 00:59:38,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-10-12 00:59:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:38,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750408805] [2024-10-12 00:59:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 00:59:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:59:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750408805] [2024-10-12 00:59:38,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750408805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:59:38,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:59:38,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:59:38,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848508512] [2024-10-12 00:59:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:59:38,738 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:38,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-10-12 00:59:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:38,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147080795] [2024-10-12 00:59:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 00:59:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:59:38,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:38,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147080795] [2024-10-12 00:59:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147080795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:59:38,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:59:38,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:59:38,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304832444] [2024-10-12 00:59:38,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:59:38,807 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 00:59:38,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:38,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:59:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:59:38,810 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:59:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:38,869 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-10-12 00:59:38,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-10-12 00:59:38,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:38,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-10-12 00:59:38,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-10-12 00:59:38,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-10-12 00:59:38,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-10-12 00:59:38,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:38,873 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 00:59:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-10-12 00:59:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-12 00:59:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 00:59:38,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-10-12 00:59:38,877 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 00:59:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:59:38,878 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 00:59:38,878 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 00:59:38,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-10-12 00:59:38,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:38,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:38,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:38,880 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:38,880 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:38,881 INFO L745 eck$LassoCheckResult]: Stem: 205#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 199#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 202#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 208#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 195#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 211#fiboEXIT >#35#return; 192#L13-1 [2024-10-12 00:59:38,881 INFO L747 eck$LassoCheckResult]: Loop: 192#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume !(1 == ~n); 193#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume 1 == ~n;#res := 1; 209#fiboFINAL assume true; 210#fiboEXIT >#35#return; 192#L13-1 [2024-10-12 00:59:38,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:38,881 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-10-12 00:59:38,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047337177] [2024-10-12 00:59:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 00:59:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047337177] [2024-10-12 00:59:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047337177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027381327] [2024-10-12 00:59:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:38,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:38,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:38,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:59:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:39,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:59:39,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:39,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:39,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027381327] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:39,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-12 00:59:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537742480] [2024-10-12 00:59:39,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:39,119 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:39,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-10-12 00:59:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:39,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705131356] [2024-10-12 00:59:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:39,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:39,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:39,221 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:39,221 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:39,222 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:39,222 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:39,222 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:39,222 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,222 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:39,222 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:39,222 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration3_Loop [2024-10-12 00:59:39,222 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:39,222 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:39,223 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,225 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,227 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,229 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,262 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:39,263 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:39,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 00:59:39,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:39,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:39,280 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:39,280 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:39,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,293 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 00:59:39,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:39,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:39,306 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:39,307 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:39,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-12 00:59:39,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,320 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 00:59:39,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:39,322 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:39,333 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:39,333 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:39,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-12 00:59:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,347 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 00:59:39,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:39,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:39,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-12 00:59:39,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,372 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 00:59:39,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:39,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:39,389 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:59:39,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,404 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:39,404 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:39,404 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:39,404 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:39,404 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:39,404 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,404 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:39,404 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:39,404 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration3_Loop [2024-10-12 00:59:39,404 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:39,404 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:39,405 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,409 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,412 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,413 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:39,449 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:39,450 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:39,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,451 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 00:59:39,453 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 [2024-10-12 00:59:39,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:39,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:39,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:39,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:39,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:39,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:39,465 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:39,467 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:39,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,479 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 00:59:39,480 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 [2024-10-12 00:59:39,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:39,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:39,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:39,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:39,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:39,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:39,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:39,493 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:39,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,505 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 00:59:39,507 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 [2024-10-12 00:59:39,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:39,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:39,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:39,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:39,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:39,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:39,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:39,519 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:39,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-12 00:59:39,533 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 [2024-10-12 00:59:39,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:39,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:39,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:39,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:39,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:39,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:39,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:39,545 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:39,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,557 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 00:59:39,559 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 [2024-10-12 00:59:39,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:39,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:39,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:39,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:39,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:39,569 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:39,569 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:39,572 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:39,575 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:39,575 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:59:39,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:39,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:39,579 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:39,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 00:59:39,580 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:39,580 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:39,580 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:39,580 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-10-12 00:59:39,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,591 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:39,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:39,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:59:39,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:39,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 00:59:39,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:39,786 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-12 00:59:39,786 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-12 00:59:39,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:39,993 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 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 128 states and 178 transitions. Complement of second has 40 states. [2024-10-12 00:59:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-12 00:59:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-10-12 00:59:39,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-10-12 00:59:39,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:39,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-10-12 00:59:39,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:39,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-10-12 00:59:39,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:40,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-10-12 00:59:40,005 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 00:59:40,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-10-12 00:59:40,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-10-12 00:59:40,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-10-12 00:59:40,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-10-12 00:59:40,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:40,013 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-10-12 00:59:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-10-12 00:59:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-10-12 00:59:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-10-12 00:59:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-10-12 00:59:40,027 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-10-12 00:59:40,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:59:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:59:40,027 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:59:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:40,117 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-10-12 00:59:40,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-10-12 00:59:40,120 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 00:59:40,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-10-12 00:59:40,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-10-12 00:59:40,125 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-10-12 00:59:40,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-10-12 00:59:40,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:40,126 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-12 00:59:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-10-12 00:59:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-10-12 00:59:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-10-12 00:59:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-10-12 00:59:40,137 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-10-12 00:59:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:59:40,138 INFO L425 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-10-12 00:59:40,139 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 00:59:40,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-10-12 00:59:40,141 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 00:59:40,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:40,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:40,146 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:40,146 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-10-12 00:59:40,146 INFO L745 eck$LassoCheckResult]: Stem: 806#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 792#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 793#$Ultimate##0 ~n := #in~n; 809#L8 assume !(~n < 1); 810#L10 assume !(1 == ~n); 780#L13 call #t~ret4 := fibo(~n - 1);< 779#$Ultimate##0 ~n := #in~n; 781#L8 assume !(~n < 1); 816#L10 assume !(1 == ~n); 790#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 839#L8 assume !(~n < 1); 837#L10 assume 1 == ~n;#res := 1; 835#fiboFINAL assume true; 834#fiboEXIT >#35#return; 817#L13-1 call #t~ret5 := fibo(~n - 2);< 833#$Ultimate##0 ~n := #in~n; 879#L8 assume ~n < 1;#res := 0; 878#fiboFINAL assume true; 877#fiboEXIT >#37#return; 875#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 872#fiboFINAL assume true; 864#fiboEXIT >#35#return; 813#L13-1 [2024-10-12 00:59:40,146 INFO L747 eck$LassoCheckResult]: Loop: 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#35#return; 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#37#return; 862#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 871#fiboFINAL assume true; 865#fiboEXIT >#35#return; 813#L13-1 [2024-10-12 00:59:40,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-10-12 00:59:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:40,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480714976] [2024-10-12 00:59:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 00:59:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 00:59:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:59:40,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480714976] [2024-10-12 00:59:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480714976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716975364] [2024-10-12 00:59:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:40,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:40,319 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:40,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 00:59:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:59:40,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:59:40,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:59:40,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716975364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:40,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2024-10-12 00:59:40,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502125996] [2024-10-12 00:59:40,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:40,634 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:40,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1138642743, now seen corresponding path program 1 times [2024-10-12 00:59:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:40,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310597862] [2024-10-12 00:59:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:40,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 00:59:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 00:59:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 00:59:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310597862] [2024-10-12 00:59:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310597862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221010022] [2024-10-12 00:59:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:40,716 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:40,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 00:59:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:40,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:59:40,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 00:59:40,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 00:59:40,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221010022] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:40,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-12 00:59:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144649524] [2024-10-12 00:59:40,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:40,881 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 00:59:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:59:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:59:40,882 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:40,975 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-10-12 00:59:40,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 76 transitions. [2024-10-12 00:59:40,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:40,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 54 states and 70 transitions. [2024-10-12 00:59:40,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2024-10-12 00:59:40,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2024-10-12 00:59:40,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 70 transitions. [2024-10-12 00:59:40,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:40,981 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 00:59:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 70 transitions. [2024-10-12 00:59:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-12 00:59:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-10-12 00:59:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-10-12 00:59:40,985 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 00:59:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:59:40,988 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 00:59:40,988 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 00:59:40,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 70 transitions. [2024-10-12 00:59:40,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:40,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:40,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:40,990 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:40,990 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1] [2024-10-12 00:59:40,991 INFO L745 eck$LassoCheckResult]: Stem: 1377#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 1378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 1371#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1372#$Ultimate##0 ~n := #in~n; 1387#L8 assume !(~n < 1); 1386#L10 assume !(1 == ~n); 1359#L13 call #t~ret4 := fibo(~n - 1);< 1358#$Ultimate##0 ~n := #in~n; 1360#L8 assume !(~n < 1); 1380#L10 assume !(1 == ~n); 1364#L13 call #t~ret4 := fibo(~n - 1);< 1365#$Ultimate##0 ~n := #in~n; 1385#L8 assume !(~n < 1); 1403#L10 assume !(1 == ~n); 1375#L13 call #t~ret4 := fibo(~n - 1);< 1365#$Ultimate##0 ~n := #in~n; 1385#L8 assume !(~n < 1); 1403#L10 assume !(1 == ~n); 1375#L13 call #t~ret4 := fibo(~n - 1);< 1365#$Ultimate##0 ~n := #in~n; 1384#L8 assume !(~n < 1); 1381#L10 assume 1 == ~n;#res := 1; 1382#fiboFINAL assume true; 1374#fiboEXIT >#35#return; 1376#L13-1 call #t~ret5 := fibo(~n - 2);< 1402#$Ultimate##0 ~n := #in~n; 1408#L8 assume ~n < 1;#res := 0; 1407#fiboFINAL assume true; 1401#fiboEXIT >#37#return; 1399#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1397#fiboFINAL assume true; 1394#fiboEXIT >#35#return; 1368#L13-1 [2024-10-12 00:59:40,991 INFO L747 eck$LassoCheckResult]: Loop: 1368#L13-1 call #t~ret5 := fibo(~n - 2);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume !(1 == ~n); 1367#L13 call #t~ret4 := fibo(~n - 1);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume !(1 == ~n); 1367#L13 call #t~ret4 := fibo(~n - 1);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume !(1 == ~n); 1367#L13 call #t~ret4 := fibo(~n - 1);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume 1 == ~n;#res := 1; 1404#fiboFINAL assume true; 1405#fiboEXIT >#35#return; 1356#L13-1 call #t~ret5 := fibo(~n - 2);< 1355#$Ultimate##0 ~n := #in~n; 1357#L8 assume ~n < 1;#res := 0; 1379#fiboFINAL assume true; 1400#fiboEXIT >#37#return; 1366#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1370#fiboFINAL assume true; 1373#fiboEXIT >#35#return; 1368#L13-1 call #t~ret5 := fibo(~n - 2);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume ~n < 1;#res := 0; 1379#fiboFINAL assume true; 1400#fiboEXIT >#37#return; 1391#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1398#fiboFINAL assume true; 1395#fiboEXIT >#35#return; 1368#L13-1 [2024-10-12 00:59:40,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 2 times [2024-10-12 00:59:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:40,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716758097] [2024-10-12 00:59:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 00:59:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 00:59:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:59:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716758097] [2024-10-12 00:59:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716758097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715253507] [2024-10-12 00:59:41,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:59:41,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:41,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:41,137 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:41,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 00:59:41,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:59:41,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:59:41,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:59:41,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:41,227 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:59:41,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:59:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715253507] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:41,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:41,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2024-10-12 00:59:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139176122] [2024-10-12 00:59:41,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:41,441 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:41,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1083596768, now seen corresponding path program 1 times [2024-10-12 00:59:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038143259] [2024-10-12 00:59:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:41,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 00:59:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 00:59:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-12 00:59:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 00:59:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038143259] [2024-10-12 00:59:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038143259] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063314178] [2024-10-12 00:59:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:41,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:41,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:41,542 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:41,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-12 00:59:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:41,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:59:41,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 00:59:41,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 00:59:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063314178] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:41,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2024-10-12 00:59:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086877822] [2024-10-12 00:59:41,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:41,795 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 00:59:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 00:59:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-10-12 00:59:41,796 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 00:59:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:42,057 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2024-10-12 00:59:42,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 110 states and 129 transitions. [2024-10-12 00:59:42,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:42,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 110 states to 99 states and 118 transitions. [2024-10-12 00:59:42,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2024-10-12 00:59:42,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2024-10-12 00:59:42,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 118 transitions. [2024-10-12 00:59:42,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:42,060 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-10-12 00:59:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 118 transitions. [2024-10-12 00:59:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-10-12 00:59:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.046875) internal successors, (67), 66 states have internal predecessors, (67), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (28), 18 states have call predecessors, (28), 20 states have call successors, (28) [2024-10-12 00:59:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2024-10-12 00:59:42,071 INFO L240 hiAutomatonCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-10-12 00:59:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 00:59:42,073 INFO L425 stractBuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-10-12 00:59:42,073 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-12 00:59:42,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2024-10-12 00:59:42,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 00:59:42,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:42,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:42,076 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:42,076 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-12 00:59:42,076 INFO L745 eck$LassoCheckResult]: Stem: 2063#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 2064#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 2059#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 2060#$Ultimate##0 ~n := #in~n; 2066#L8 assume !(~n < 1); 2067#L10 assume !(1 == ~n); 2050#L13 call #t~ret4 := fibo(~n - 1);< 2049#$Ultimate##0 ~n := #in~n; 2051#L8 assume !(~n < 1); 2091#L10 assume !(1 == ~n); 2055#L13 call #t~ret4 := fibo(~n - 1);< 2056#$Ultimate##0 ~n := #in~n; 2090#L8 assume !(~n < 1); 2089#L10 assume !(1 == ~n); 2085#L13 call #t~ret4 := fibo(~n - 1);< 2088#$Ultimate##0 ~n := #in~n; 2087#L8 assume !(~n < 1); 2086#L10 assume !(1 == ~n); 2081#L13 call #t~ret4 := fibo(~n - 1);< 2084#$Ultimate##0 ~n := #in~n; 2083#L8 assume !(~n < 1); 2082#L10 assume !(1 == ~n); 2077#L13 call #t~ret4 := fibo(~n - 1);< 2080#$Ultimate##0 ~n := #in~n; 2079#L8 assume !(~n < 1); 2078#L10 assume !(1 == ~n); 2069#L13 call #t~ret4 := fibo(~n - 1);< 2075#$Ultimate##0 ~n := #in~n; 2076#L8 assume !(~n < 1); 2144#L10 assume !(1 == ~n); 2070#L13 call #t~ret4 := fibo(~n - 1);< 2075#$Ultimate##0 ~n := #in~n; 2076#L8 assume !(~n < 1); 2144#L10 assume !(1 == ~n); 2070#L13 call #t~ret4 := fibo(~n - 1);< 2075#$Ultimate##0 ~n := #in~n; 2074#L8 assume !(~n < 1); 2068#L10 assume 1 == ~n;#res := 1; 2071#fiboFINAL assume true; 2102#fiboEXIT >#35#return; 2047#L13-1 call #t~ret5 := fibo(~n - 2);< 2046#$Ultimate##0 ~n := #in~n; 2048#L8 assume ~n < 1;#res := 0; 2065#fiboFINAL assume true; 2119#fiboEXIT >#37#return; 2117#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2111#fiboFINAL assume true; 2107#fiboEXIT >#35#return; 2097#L13-1 [2024-10-12 00:59:42,077 INFO L747 eck$LassoCheckResult]: Loop: 2097#L13-1 call #t~ret5 := fibo(~n - 2);< 2103#$Ultimate##0 ~n := #in~n; 2115#L8 assume !(~n < 1); 2110#L10 assume !(1 == ~n); 2096#L13 call #t~ret4 := fibo(~n - 1);< 2103#$Ultimate##0 ~n := #in~n; 2115#L8 assume !(~n < 1); 2110#L10 assume !(1 == ~n); 2096#L13 call #t~ret4 := fibo(~n - 1);< 2103#$Ultimate##0 ~n := #in~n; 2115#L8 assume !(~n < 1); 2110#L10 assume 1 == ~n;#res := 1; 2104#fiboFINAL assume true; 2100#fiboEXIT >#35#return; 2093#L13-1 call #t~ret5 := fibo(~n - 2);< 2099#$Ultimate##0 ~n := #in~n; 2124#L8 assume ~n < 1;#res := 0; 2116#fiboFINAL assume true; 2120#fiboEXIT >#37#return; 2121#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2143#fiboFINAL assume true; 2105#fiboEXIT >#35#return; 2097#L13-1 [2024-10-12 00:59:42,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:42,077 INFO L85 PathProgramCache]: Analyzing trace with hash -683438758, now seen corresponding path program 3 times [2024-10-12 00:59:42,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403309925] [2024-10-12 00:59:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:42,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:42,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 00:59:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:42,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:42,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 00:59:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:59:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403309925] [2024-10-12 00:59:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403309925] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106737513] [2024-10-12 00:59:42,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:59:42,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:42,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:42,308 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:42,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-12 00:59:42,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-12 00:59:42,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:59:42,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 00:59:42,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:59:42,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 155 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:59:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106737513] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:42,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 23 [2024-10-12 00:59:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548492693] [2024-10-12 00:59:42,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:42,645 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:42,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2000232554, now seen corresponding path program 2 times [2024-10-12 00:59:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063416661] [2024-10-12 00:59:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:42,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:42,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:42,820 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:42,820 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:42,820 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:42,820 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:42,820 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:42,820 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:42,820 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:42,820 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:42,820 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration6_Loop [2024-10-12 00:59:42,820 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:42,821 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:42,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:42,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:42,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:42,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:42,863 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:42,864 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:42,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:42,865 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:42,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 00:59:42,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:42,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:42,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:42,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:42,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:42,896 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:42,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-12 00:59:42,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:42,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:43,336 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:59:43,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:43,341 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:43,341 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:43,341 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:43,341 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:43,341 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:43,341 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:43,341 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:43,341 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:43,341 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration6_Loop [2024-10-12 00:59:43,341 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:43,341 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:43,342 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:43,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:43,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:43,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:43,385 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:43,385 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:43,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:43,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:43,386 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:43,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-12 00:59:43,388 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 [2024-10-12 00:59:43,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:43,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:43,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:43,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:43,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:43,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:43,398 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:43,400 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:43,402 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-12 00:59:43,402 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:59:43,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:43,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:43,403 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:43,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-12 00:59:43,404 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:43,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:43,404 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:43,404 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-10-12 00:59:43,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:43,414 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:43,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:43,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 00:59:43,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:43,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 00:59:43,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:43,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-10-12 00:59:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:59:43,783 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 [2024-10-12 00:59:43,783 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:43,859 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 106 states and 125 transitions. Complement of second has 11 states. [2024-10-12 00:59:43,861 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 [2024-10-12 00:59:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:43,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-12 00:59:43,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 48 letters. Loop has 22 letters. [2024-10-12 00:59:43,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:43,862 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:43,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:43,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 00:59:43,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:44,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 00:59:44,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:59:44,152 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 [2024-10-12 00:59:44,152 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:44,223 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 106 states and 125 transitions. Complement of second has 11 states. [2024-10-12 00:59:44,225 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 [2024-10-12 00:59:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-12 00:59:44,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 48 letters. Loop has 22 letters. [2024-10-12 00:59:44,226 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:44,226 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:44,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:44,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 00:59:44,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:44,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 00:59:44,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:59:44,514 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 [2024-10-12 00:59:44,515 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:44,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 537 states and 697 transitions. Complement of second has 132 states. [2024-10-12 00:59:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-10-12 00:59:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 00:59:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 45 transitions. [2024-10-12 00:59:44,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 48 letters. Loop has 22 letters. [2024-10-12 00:59:44,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:44,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 70 letters. Loop has 22 letters. [2024-10-12 00:59:44,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:44,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 48 letters. Loop has 44 letters. [2024-10-12 00:59:44,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:44,698 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 537 states and 697 transitions. [2024-10-12 00:59:44,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 00:59:44,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 537 states to 382 states and 513 transitions. [2024-10-12 00:59:44,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 161 [2024-10-12 00:59:44,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-10-12 00:59:44,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 382 states and 513 transitions. [2024-10-12 00:59:44,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:44,715 INFO L218 hiAutomatonCegarLoop]: Abstraction has 382 states and 513 transitions. [2024-10-12 00:59:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states and 513 transitions. [2024-10-12 00:59:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 337. [2024-10-12 00:59:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 206 states have (on average 1.0922330097087378) internal successors, (225), 219 states have internal predecessors, (225), 80 states have call successors, (84), 42 states have call predecessors, (84), 51 states have return successors, (126), 75 states have call predecessors, (126), 70 states have call successors, (126) [2024-10-12 00:59:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 435 transitions. [2024-10-12 00:59:44,754 INFO L240 hiAutomatonCegarLoop]: Abstraction has 337 states and 435 transitions. [2024-10-12 00:59:44,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 00:59:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-10-12 00:59:44,755 INFO L87 Difference]: Start difference. First operand 337 states and 435 transitions. Second operand has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 15 states have internal predecessors, (43), 13 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 00:59:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:45,025 INFO L93 Difference]: Finished difference Result 462 states and 593 transitions. [2024-10-12 00:59:45,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 462 states and 593 transitions. [2024-10-12 00:59:45,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 00:59:45,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 462 states to 455 states and 580 transitions. [2024-10-12 00:59:45,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 210 [2024-10-12 00:59:45,039 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 210 [2024-10-12 00:59:45,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 455 states and 580 transitions. [2024-10-12 00:59:45,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:45,039 INFO L218 hiAutomatonCegarLoop]: Abstraction has 455 states and 580 transitions. [2024-10-12 00:59:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states and 580 transitions. [2024-10-12 00:59:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 435. [2024-10-12 00:59:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 267 states have (on average 1.0823970037453183) internal successors, (289), 281 states have internal predecessors, (289), 106 states have call successors, (110), 55 states have call predecessors, (110), 62 states have return successors, (159), 98 states have call predecessors, (159), 94 states have call successors, (159) [2024-10-12 00:59:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 558 transitions. [2024-10-12 00:59:45,061 INFO L240 hiAutomatonCegarLoop]: Abstraction has 435 states and 558 transitions. [2024-10-12 00:59:45,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 00:59:45,062 INFO L425 stractBuchiCegarLoop]: Abstraction has 435 states and 558 transitions. [2024-10-12 00:59:45,062 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-12 00:59:45,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 435 states and 558 transitions. [2024-10-12 00:59:45,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 00:59:45,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:59:45,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:59:45,067 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 12, 11, 11, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:59:45,067 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 00:59:45,067 INFO L745 eck$LassoCheckResult]: Stem: 4917#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 4918#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4908#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4909#$Ultimate##0 ~n := #in~n; 4958#L8 assume !(~n < 1); 4957#L10 assume !(1 == ~n); 4953#L13 call #t~ret4 := fibo(~n - 1);< 4956#$Ultimate##0 ~n := #in~n; 4955#L8 assume !(~n < 1); 4954#L10 assume !(1 == ~n); 4949#L13 call #t~ret4 := fibo(~n - 1);< 4952#$Ultimate##0 ~n := #in~n; 4951#L8 assume !(~n < 1); 4950#L10 assume !(1 == ~n); 4945#L13 call #t~ret4 := fibo(~n - 1);< 4948#$Ultimate##0 ~n := #in~n; 4947#L8 assume !(~n < 1); 4946#L10 assume !(1 == ~n); 4941#L13 call #t~ret4 := fibo(~n - 1);< 4944#$Ultimate##0 ~n := #in~n; 4943#L8 assume !(~n < 1); 4942#L10 assume !(1 == ~n); 4937#L13 call #t~ret4 := fibo(~n - 1);< 4940#$Ultimate##0 ~n := #in~n; 4939#L8 assume !(~n < 1); 4938#L10 assume !(1 == ~n); 4933#L13 call #t~ret4 := fibo(~n - 1);< 4936#$Ultimate##0 ~n := #in~n; 4935#L8 assume !(~n < 1); 4934#L10 assume !(1 == ~n); 4914#L13 call #t~ret4 := fibo(~n - 1);< 4930#$Ultimate##0 ~n := #in~n; 4932#L8 assume !(~n < 1); 5268#L10 assume !(1 == ~n); 4913#L13 call #t~ret4 := fibo(~n - 1);< 4930#$Ultimate##0 ~n := #in~n; 4932#L8 assume !(~n < 1); 5268#L10 assume !(1 == ~n); 4913#L13 call #t~ret4 := fibo(~n - 1);< 4930#$Ultimate##0 ~n := #in~n; 4931#L8 assume !(~n < 1); 5315#L10 assume 1 == ~n;#res := 1; 5313#fiboFINAL assume true; 4912#fiboEXIT >#35#return; 4915#L13-1 call #t~ret5 := fibo(~n - 2);< 5284#$Ultimate##0 ~n := #in~n; 5288#L8 assume ~n < 1;#res := 0; 5287#fiboFINAL assume true; 5283#fiboEXIT >#37#return; 5282#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5281#fiboFINAL assume true; 5267#fiboEXIT >#35#return; 4923#L13-1 call #t~ret5 := fibo(~n - 2);< 5244#$Ultimate##0 ~n := #in~n; 5273#L8 assume !(~n < 1); 5272#L10 assume !(1 == ~n); 4903#L13 call #t~ret4 := fibo(~n - 1);< 5046#$Ultimate##0 ~n := #in~n; 5045#L8 assume !(~n < 1); 5003#L10 assume !(1 == ~n); 4984#L13 call #t~ret4 := fibo(~n - 1);< 4992#$Ultimate##0 [2024-10-12 00:59:45,067 INFO L747 eck$LassoCheckResult]: Loop: 4992#$Ultimate##0 ~n := #in~n; 4999#L8 assume !(~n < 1); 4998#L10 assume !(1 == ~n); 4983#L13 call #t~ret4 := fibo(~n - 1);< 4992#$Ultimate##0 [2024-10-12 00:59:45,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:45,068 INFO L85 PathProgramCache]: Analyzing trace with hash -366223317, now seen corresponding path program 4 times [2024-10-12 00:59:45,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:45,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228058182] [2024-10-12 00:59:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:45,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:45,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 00:59:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:45,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 00:59:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:45,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 00:59:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 198 proven. 72 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:59:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:59:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228058182] [2024-10-12 00:59:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228058182] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:59:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197869987] [2024-10-12 00:59:45,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:59:45,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:59:45,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,286 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-12 00:59:45,327 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:59:45,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:59:45,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 00:59:45,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 199 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 00:59:45,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:59:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 199 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 00:59:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197869987] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:59:45,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:59:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 24 [2024-10-12 00:59:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859161739] [2024-10-12 00:59:45,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:59:45,601 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:59:45,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2024-10-12 00:59:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:59:45,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66770025] [2024-10-12 00:59:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:59:45,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:59:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:45,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:59:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:59:45,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:59:45,632 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:45,632 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:45,632 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:45,633 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:45,633 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:59:45,633 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,633 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:45,633 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:45,633 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration7_Loop [2024-10-12 00:59:45,633 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:45,633 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:45,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,636 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,637 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,666 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:45,667 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:59:45,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,668 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-12 00:59:45,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:45,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:45,681 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:45,681 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:45,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2024-10-12 00:59:45,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,693 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-12 00:59:45,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:45,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:45,706 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:45,706 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:45,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-10-12 00:59:45,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,734 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-10-12 00:59:45,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:45,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:45,749 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:45,750 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:45,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,761 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-12 00:59:45,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:45,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:45,776 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:59:45,776 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:59:45,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,787 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-12 00:59:45,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:59:45,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:45,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,810 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-12 00:59:45,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:59:45,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:59:45,861 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:59:45,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,865 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:59:45,865 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:59:45,865 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:59:45,865 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:59:45,865 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:59:45,865 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,865 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:59:45,865 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:59:45,879 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration7_Loop [2024-10-12 00:59:45,879 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:59:45,879 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:59:45,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:59:45,910 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:59:45,910 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:59:45,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,911 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-12 00:59:45,913 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 [2024-10-12 00:59:45,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:45,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:45,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:45,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:45,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:45,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:45,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:45,927 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:45,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,939 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-12 00:59:45,940 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 [2024-10-12 00:59:45,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:45,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:45,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:45,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:45,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:45,950 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:45,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:45,951 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:59:45,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,962 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-12 00:59:45,964 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 [2024-10-12 00:59:45,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:59:45,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:59:45,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:59:45,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:59:45,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:59:45,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:59:45,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:59:45,976 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:59:45,980 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:59:45,980 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:59:45,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:59:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:59:45,982 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:59:45,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-10-12 00:59:45,983 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:59:45,983 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:59:45,984 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:59:45,984 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-10-12 00:59:45,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:45,994 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:59:46,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:46,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 00:59:46,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:46,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:46,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:46,222 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 [2024-10-12 00:59:46,223 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:46,266 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 460 states and 583 transitions. Complement of second has 15 states. [2024-10-12 00:59:46,268 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 [2024-10-12 00:59:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:46,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-10-12 00:59:46,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 61 letters. Loop has 4 letters. [2024-10-12 00:59:46,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:46,270 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:46,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:46,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 00:59:46,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:46,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:46,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:46,491 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 [2024-10-12 00:59:46,491 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:46,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 460 states and 583 transitions. Complement of second has 15 states. [2024-10-12 00:59:46,530 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 [2024-10-12 00:59:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-10-12 00:59:46,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 61 letters. Loop has 4 letters. [2024-10-12 00:59:46,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:46,531 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:59:46,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:59:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:46,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 00:59:46,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:59:46,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:59:46,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:59:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:59:46,752 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 [2024-10-12 00:59:46,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:46,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:46,833 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 589 states and 714 transitions. Complement of second has 19 states. [2024-10-12 00:59:46,837 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 [2024-10-12 00:59:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-10-12 00:59:46,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 61 letters. Loop has 4 letters. [2024-10-12 00:59:46,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:46,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 65 letters. Loop has 4 letters. [2024-10-12 00:59:46,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:46,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 61 letters. Loop has 8 letters. [2024-10-12 00:59:46,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:59:46,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 589 states and 714 transitions. [2024-10-12 00:59:46,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 00:59:46,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 589 states to 450 states and 574 transitions. [2024-10-12 00:59:46,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2024-10-12 00:59:46,853 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 163 [2024-10-12 00:59:46,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 574 transitions. [2024-10-12 00:59:46,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:59:46,854 INFO L218 hiAutomatonCegarLoop]: Abstraction has 450 states and 574 transitions. [2024-10-12 00:59:46,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 574 transitions. [2024-10-12 00:59:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2024-10-12 00:59:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 276 states have (on average 1.0797101449275361) internal successors, (298), 290 states have internal predecessors, (298), 107 states have call successors, (111), 56 states have call predecessors, (111), 62 states have return successors, (159), 98 states have call predecessors, (159), 94 states have call successors, (159) [2024-10-12 00:59:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 568 transitions. [2024-10-12 00:59:46,871 INFO L240 hiAutomatonCegarLoop]: Abstraction has 445 states and 568 transitions. [2024-10-12 00:59:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:59:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 00:59:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-10-12 00:59:46,872 INFO L87 Difference]: Start difference. First operand 445 states and 568 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 14 states have internal predecessors, (43), 12 states have call successors, (14), 12 states have call predecessors, (14), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:59:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:59:47,133 INFO L93 Difference]: Finished difference Result 469 states and 569 transitions. [2024-10-12 00:59:47,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 569 transitions. [2024-10-12 00:59:47,138 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:59:47,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 0 states and 0 transitions. [2024-10-12 00:59:47,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 00:59:47,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 00:59:47,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 00:59:47,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:59:47,138 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:59:47,139 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:59:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 00:59:47,139 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:59:47,139 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-10-12 00:59:47,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 00:59:47,140 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:59:47,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 00:59:47,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 12:59:47 BoogieIcfgContainer [2024-10-12 00:59:47,146 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 00:59:47,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:59:47,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:59:47,147 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:59:47,147 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:59:37" (3/4) ... [2024-10-12 00:59:47,148 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 00:59:47,149 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:59:47,149 INFO L158 Benchmark]: Toolchain (without parser) took 10061.29ms. Allocated memory was 184.5MB in the beginning and 297.8MB in the end (delta: 113.2MB). Free memory was 137.1MB in the beginning and 228.5MB in the end (delta: -91.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2024-10-12 00:59:47,150 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:59:47,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.49ms. Allocated memory is still 184.5MB. Free memory was 136.4MB in the beginning and 124.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 00:59:47,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.07ms. Allocated memory is still 184.5MB. Free memory was 124.6MB in the beginning and 123.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:59:47,150 INFO L158 Benchmark]: Boogie Preprocessor took 20.22ms. Allocated memory is still 184.5MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:59:47,150 INFO L158 Benchmark]: RCFGBuilder took 218.90ms. Allocated memory is still 184.5MB. Free memory was 121.7MB in the beginning and 111.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 00:59:47,151 INFO L158 Benchmark]: BuchiAutomizer took 9626.02ms. Allocated memory was 184.5MB in the beginning and 297.8MB in the end (delta: 113.2MB). Free memory was 111.2MB in the beginning and 228.5MB in the end (delta: -117.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:59:47,151 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 297.8MB. Free memory is still 228.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:59:47,152 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.49ms. Allocated memory is still 184.5MB. Free memory was 136.4MB in the beginning and 124.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.07ms. Allocated memory is still 184.5MB. Free memory was 124.6MB in the beginning and 123.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.22ms. Allocated memory is still 184.5MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 218.90ms. Allocated memory is still 184.5MB. Free memory was 121.7MB in the beginning and 111.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 9626.02ms. Allocated memory was 184.5MB in the beginning and 297.8MB in the end (delta: 113.2MB). Free memory was 111.2MB in the beginning and 228.5MB in the end (delta: -117.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 297.8MB. Free memory is still 228.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (6 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 6 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.5s and 8 iterations. TraceHistogramMax:13. Analysis of lassos took 5.4s. Construction of modules took 0.8s. Büchi inclusion checks took 3.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 92 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, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 485 mSDsluCounter, 720 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 308 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1524 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 308 mSolverCounterUnsat, 211 mSDtfsCounter, 1524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp86 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq178 hnf93 smp76 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 00:59:47,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:47,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:47,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:47,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-12 00:59:47,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-12 00:59:48,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:48,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 00:59:48,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE