./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:51:23,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:51:23,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-23 02:51:23,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:51:23,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:51:23,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:51:23,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:51:23,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:51:23,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:51:23,176 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:51:23,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:51:23,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:51:23,177 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:51:23,177 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-23 02:51:23,178 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-23 02:51:23,179 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-23 02:51:23,179 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-23 02:51:23,179 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-23 02:51:23,179 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-23 02:51:23,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:51:23,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-23 02:51:23,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:51:23,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:51:23,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:51:23,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:51:23,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-23 02:51:23,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-23 02:51:23,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-23 02:51:23,184 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:51:23,185 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:51:23,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:51:23,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:51:23,185 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-23 02:51:23,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:51:23,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:51:23,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:51:23,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:51:23,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:51:23,186 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-23 02:51:23,186 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2024-11-23 02:51:23,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:51:23,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:51:23,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:51:23,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:51:23,540 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:51:23,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-23 02:51:25,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:51:25,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:51:25,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-23 02:51:25,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97d9f28e9/88b5cf5d2a274f91b34c8a52fb77d7a6/FLAG18bde24ff [2024-11-23 02:51:25,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97d9f28e9/88b5cf5d2a274f91b34c8a52fb77d7a6 [2024-11-23 02:51:25,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:51:25,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:51:25,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:51:25,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:51:25,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:51:25,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:25" (1/1) ... [2024-11-23 02:51:25,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5593b00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:25, skipping insertion in model container [2024-11-23 02:51:25,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:25" (1/1) ... [2024-11-23 02:51:25,814 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:51:26,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:51:26,100 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:51:26,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:51:26,162 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:51:26,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26 WrapperNode [2024-11-23 02:51:26,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:51:26,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:51:26,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:51:26,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:51:26,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,195 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-23 02:51:26,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:51:26,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:51:26,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:51:26,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:51:26,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,224 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]. [2024-11-23 02:51:26,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:51:26,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:51:26,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:51:26,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:51:26,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (1/1) ... [2024-11-23 02:51:26,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:26,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:26,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:26,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-23 02:51:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:51:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:51:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-23 02:51:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-23 02:51:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-23 02:51:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-23 02:51:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:51:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:51:26,406 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:51:26,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:51:26,531 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-23 02:51:26,531 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:51:26,544 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:51:26,545 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 02:51:26,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:26 BoogieIcfgContainer [2024-11-23 02:51:26,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:51:26,547 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-23 02:51:26,547 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-23 02:51:26,550 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-23 02:51:26,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:51:26,551 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:51:25" (1/3) ... [2024-11-23 02:51:26,552 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1b260137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:51:26, skipping insertion in model container [2024-11-23 02:51:26,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:51:26,552 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:26" (2/3) ... [2024-11-23 02:51:26,552 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1b260137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:51:26, skipping insertion in model container [2024-11-23 02:51:26,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:51:26,553 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:26" (3/3) ... [2024-11-23 02:51:26,554 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-2.c [2024-11-23 02:51:26,608 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-23 02:51:26,608 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-23 02:51:26,608 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-23 02:51:26,609 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-23 02:51:26,609 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-23 02:51:26,609 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-23 02:51:26,609 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-23 02:51:26,610 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-23 02:51:26,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-23 02:51:26,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-23 02:51:26,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:26,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:26,637 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:51:26,637 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:26,637 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-23 02:51:26,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-23 02:51:26,640 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-23 02:51:26,640 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:26,640 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:26,640 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:51:26,640 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:26,648 INFO L745 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2024-11-23 02:51:26,648 INFO L747 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2024-11-23 02:51:26,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2024-11-23 02:51:26,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:26,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124295113] [2024-11-23 02:51:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:26,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:26,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:26,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2024-11-23 02:51:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065978102] [2024-11-23 02:51:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:26,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:26,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:26,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2024-11-23 02:51:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:26,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751149362] [2024-11-23 02:51:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:26,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:26,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:27,108 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:27,110 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:27,110 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:27,110 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:27,110 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:27,111 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,111 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:27,111 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:27,111 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2024-11-23 02:51:27,111 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:27,111 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:27,123 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,145 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,155 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,247 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:27,248 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:27,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-23 02:51:27,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,282 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,282 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-23 02:51:27,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,307 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,307 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-23 02:51:27,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-23 02:51:27,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,335 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,336 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-23 02:51:27,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,374 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,374 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-23 02:51:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-23 02:51:27,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,414 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,414 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-23 02:51:27,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-23 02:51:27,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,440 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,441 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-23 02:51:27,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,468 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:27,468 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:27,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-23 02:51:27,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:27,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-23 02:51:27,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:27,514 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:27,594 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:27,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,603 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:27,603 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:27,603 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:27,603 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:27,603 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:27,603 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,604 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:27,604 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:27,604 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2024-11-23 02:51:27,604 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:27,604 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:27,605 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,616 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,624 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,631 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,658 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:27,713 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:27,718 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:27,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-23 02:51:27,724 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 [2024-11-23 02:51:27,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:27,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:27,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:27,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:27,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:27,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:27,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:27,740 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:27,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,748 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-23 02:51:27,751 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 [2024-11-23 02:51:27,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:27,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:27,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:27,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:27,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:27,762 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:27,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:27,764 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:27,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,773 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-23 02:51:27,775 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 [2024-11-23 02:51:27,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:27,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:27,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:27,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:27,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:27,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:27,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:27,788 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:27,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-23 02:51:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,796 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-23 02:51:27,799 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 [2024-11-23 02:51:27,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:27,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:27,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:27,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:27,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:27,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:27,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:27,812 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:27,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-23 02:51:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-23 02:51:27,823 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 [2024-11-23 02:51:27,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:27,834 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:27,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:27,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:27,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:27,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:27,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:27,836 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:27,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-23 02:51:27,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,844 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-23 02:51:27,846 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 [2024-11-23 02:51:27,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:27,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:27,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:27,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:27,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:27,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:27,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:27,860 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:27,864 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:27,864 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:27,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:27,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:27,888 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:27,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-23 02:51:27,900 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:27,900 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:27,900 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:27,901 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2024-11-23 02:51:27,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:27,916 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:27,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:27,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:51:27,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:28,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:28,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:28,252 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2024-11-23 02:51:28,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:51:28,409 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 107 transitions. Complement of second has 28 states. [2024-11-23 02:51:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:51:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2024-11-23 02:51:28,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-23 02:51:28,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:28,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2024-11-23 02:51:28,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:28,418 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 16 letters. [2024-11-23 02:51:28,418 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:28,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 107 transitions. [2024-11-23 02:51:28,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-23 02:51:28,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 55 states and 75 transitions. [2024-11-23 02:51:28,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2024-11-23 02:51:28,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2024-11-23 02:51:28,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 75 transitions. [2024-11-23 02:51:28,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:28,430 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 75 transitions. [2024-11-23 02:51:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 75 transitions. [2024-11-23 02:51:28,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-23 02:51:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-23 02:51:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-23 02:51:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-23 02:51:28,490 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-23 02:51:28,490 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-23 02:51:28,490 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-23 02:51:28,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2024-11-23 02:51:28,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-23 02:51:28,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:28,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:28,493 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:28,493 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:28,493 INFO L745 eck$LassoCheckResult]: Stem: 232#$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(18, 2);call #Ultimate.allocInit(12, 3); 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#$Ultimate##0 ~n := #in~n; 215#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#$Ultimate##0 ~n := #in~n; 235#L20 assume !(~n < 1); 236#L22 assume !(1 == ~n); 200#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#48#return; 207#L25-1 [2024-11-23 02:51:28,493 INFO L747 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume !(~n < 1); 238#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 241#$Ultimate##0 ~n := #in~n; 240#L20 assume !(~n < 1); 239#L22 assume !(1 == ~n); 220#L25 call #t~ret6 := fibo1(~n - 1);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume ~n < 1;#res := 0; 233#fibo1FINAL assume true; 234#fibo1EXIT >#48#return; 207#L25-1 [2024-11-23 02:51:28,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:28,494 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2024-11-23 02:51:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:28,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793580161] [2024-11-23 02:51:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:28,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:51:28,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:28,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793580161] [2024-11-23 02:51:28,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793580161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:51:28,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:51:28,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 02:51:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543191359] [2024-11-23 02:51:28,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:51:28,596 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:28,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2024-11-23 02:51:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10142137] [2024-11-23 02:51:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:28,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:51:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10142137] [2024-11-23 02:51:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10142137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:51:28,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:51:28,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 02:51:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983677491] [2024-11-23 02:51:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:51:28,642 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-23 02:51:28,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:51:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:51:28,645 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:28,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:28,707 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-23 02:51:28,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2024-11-23 02:51:28,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-23 02:51:28,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 79 transitions. [2024-11-23 02:51:28,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-11-23 02:51:28,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-11-23 02:51:28,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 79 transitions. [2024-11-23 02:51:28,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:28,716 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-23 02:51:28,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 79 transitions. [2024-11-23 02:51:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-23 02:51:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-23 02:51:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-11-23 02:51:28,727 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-23 02:51:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:51:28,728 INFO L425 stractBuchiCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-23 02:51:28,728 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-23 02:51:28,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 79 transitions. [2024-11-23 02:51:28,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-23 02:51:28,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:28,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:28,730 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:28,730 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:28,730 INFO L745 eck$LassoCheckResult]: Stem: 362#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 344#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 345#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 346#$Ultimate##0 ~n := #in~n; 347#L10 assume !(~n < 1); 382#L12 assume !(1 == ~n); 338#L15 call #t~ret4 := fibo2(~n - 1);< 361#$Ultimate##0 ~n := #in~n; 368#L20 assume !(~n < 1); 369#L22 assume !(1 == ~n); 329#L25 call #t~ret6 := fibo1(~n - 1);< 348#$Ultimate##0 ~n := #in~n; 349#L10 assume !(~n < 1); 358#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 366#fibo1EXIT >#48#return; 335#L25-1 [2024-11-23 02:51:28,730 INFO L747 eck$LassoCheckResult]: Loop: 335#L25-1 call #t~ret7 := fibo1(~n - 2);< 342#$Ultimate##0 ~n := #in~n; 371#L10 assume !(~n < 1); 352#L12 assume !(1 == ~n); 340#L15 call #t~ret4 := fibo2(~n - 1);< 375#$Ultimate##0 ~n := #in~n; 374#L20 assume !(~n < 1); 372#L22 assume !(1 == ~n); 336#L25 call #t~ret6 := fibo1(~n - 1);< 342#$Ultimate##0 ~n := #in~n; 371#L10 assume !(~n < 1); 352#L12 assume 1 == ~n;#res := 1; 353#fibo1FINAL assume true; 365#fibo1EXIT >#48#return; 335#L25-1 [2024-11-23 02:51:28,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2024-11-23 02:51:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993652554] [2024-11-23 02:51:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:28,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993652554] [2024-11-23 02:51:28,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993652554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:28,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090509971] [2024-11-23 02:51:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:28,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:28,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:28,853 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:28,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 02:51:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:28,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:51:28,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:28,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090509971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:29,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-23 02:51:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72632842] [2024-11-23 02:51:29,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:29,012 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:29,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2024-11-23 02:51:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580810541] [2024-11-23 02:51:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:29,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:29,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:29,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:29,223 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:29,223 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:29,223 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:29,223 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:29,223 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:29,223 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,223 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:29,223 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:29,223 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2024-11-23 02:51:29,223 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:29,223 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:29,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,230 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,238 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,250 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,255 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,257 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,308 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:29,308 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:29,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,310 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-23 02:51:29,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:29,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,328 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:29,328 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:29,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,335 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-23 02:51:29,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:29,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,349 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:29,349 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:29,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-23 02:51:29,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,358 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-23 02:51:29,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:29,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,375 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:29,376 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:29,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-23 02:51:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,384 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-23 02:51:29,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:29,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,398 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:29,398 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:29,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,406 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-23 02:51:29,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:29,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,420 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:29,421 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:29,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,429 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-23 02:51:29,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:29,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-23 02:51:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,448 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-23 02:51:29,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:29,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:29,467 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:29,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,473 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:29,473 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:29,473 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:29,473 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:29,473 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:29,473 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,473 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:29,473 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:29,473 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2024-11-23 02:51:29,473 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:29,473 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:29,474 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,479 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,481 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,490 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,493 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,495 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,497 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:29,544 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:29,544 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:29,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,546 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-23 02:51:29,548 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 [2024-11-23 02:51:29,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:29,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:29,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:29,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:29,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:29,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:29,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:29,561 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:29,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,571 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-23 02:51:29,572 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 [2024-11-23 02:51:29,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:29,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:29,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:29,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:29,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:29,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:29,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:29,585 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:29,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-23 02:51:29,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,598 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-23 02:51:29,603 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 [2024-11-23 02:51:29,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:29,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:29,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:29,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:29,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:29,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:29,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:29,618 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:29,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,627 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-23 02:51:29,631 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 [2024-11-23 02:51:29,641 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:29,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:29,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:29,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:29,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:29,642 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:29,642 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:29,644 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:29,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,653 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-23 02:51:29,655 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 [2024-11-23 02:51:29,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:29,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:29,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:29,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:29,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:29,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:29,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:29,670 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:29,674 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:29,674 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:29,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:29,677 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:29,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-23 02:51:29,679 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:29,679 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:29,679 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:29,679 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-11-23 02:51:29,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:29,687 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:29,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:29,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:51:29,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:29,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 02:51:29,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:29,923 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-23 02:51:29,923 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 02:51:30,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-11-23 02:51:30,321 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 206 states and 282 transitions. Complement of second has 48 states. [2024-11-23 02:51:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 02:51:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 79 transitions. [2024-11-23 02:51:30,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 14 letters. [2024-11-23 02:51:30,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:30,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 30 letters. Loop has 14 letters. [2024-11-23 02:51:30,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:30,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 28 letters. [2024-11-23 02:51:30,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:30,326 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 282 transitions. [2024-11-23 02:51:30,331 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-23 02:51:30,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 182 states and 254 transitions. [2024-11-23 02:51:30,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2024-11-23 02:51:30,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-23 02:51:30,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2024-11-23 02:51:30,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:30,337 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2024-11-23 02:51:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2024-11-23 02:51:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2024-11-23 02:51:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 96 states have (on average 1.28125) internal successors, (123), 104 states have internal predecessors, (123), 35 states have call successors, (36), 19 states have call predecessors, (36), 23 states have return successors, (52), 30 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-23 02:51:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2024-11-23 02:51:30,350 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2024-11-23 02:51:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:30,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:51:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:51:30,351 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:30,462 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2024-11-23 02:51:30,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 249 transitions. [2024-11-23 02:51:30,467 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-23 02:51:30,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 245 transitions. [2024-11-23 02:51:30,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2024-11-23 02:51:30,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2024-11-23 02:51:30,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 245 transitions. [2024-11-23 02:51:30,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:30,471 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 245 transitions. [2024-11-23 02:51:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 245 transitions. [2024-11-23 02:51:30,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2024-11-23 02:51:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2024-11-23 02:51:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2024-11-23 02:51:30,484 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-23 02:51:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 02:51:30,493 INFO L425 stractBuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-23 02:51:30,493 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-23 02:51:30,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 227 transitions. [2024-11-23 02:51:30,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-23 02:51:30,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:30,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:30,502 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:30,503 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:30,504 INFO L745 eck$LassoCheckResult]: Stem: 1272#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1243#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1276#$Ultimate##0 ~n := #in~n; 1267#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1229#L15 call #t~ret4 := fibo2(~n - 1);< 1268#$Ultimate##0 ~n := #in~n; 1270#L20 assume !(~n < 1); 1271#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1245#$Ultimate##0 ~n := #in~n; 1305#L10 assume !(~n < 1); 1310#L12 assume !(1 == ~n); 1312#L15 call #t~ret4 := fibo2(~n - 1);< 1318#$Ultimate##0 ~n := #in~n; 1321#L20 assume ~n < 1;#res := 0; 1319#fibo2FINAL assume true; 1317#fibo2EXIT >#52#return; 1315#L15-1 call #t~ret5 := fibo2(~n - 2);< 1316#$Ultimate##0 ~n := #in~n; 1323#L20 assume ~n < 1;#res := 0; 1320#fibo2FINAL assume true; 1314#fibo2EXIT >#54#return; 1313#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1308#fibo1FINAL assume true; 1309#fibo1EXIT >#48#return; 1246#L25-1 call #t~ret7 := fibo1(~n - 2);< 1302#$Ultimate##0 ~n := #in~n; 1333#L10 assume ~n < 1;#res := 0; 1274#fibo1FINAL assume true; 1368#fibo1EXIT >#50#return; 1237#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1248#fibo2FINAL assume true; 1261#fibo2EXIT >#52#return; 1206#L15-1 call #t~ret5 := fibo2(~n - 2);< 1331#$Ultimate##0 [2024-11-23 02:51:30,505 INFO L747 eck$LassoCheckResult]: Loop: 1331#$Ultimate##0 ~n := #in~n; 1325#L20 assume !(~n < 1); 1205#L22 assume !(1 == ~n); 1210#L25 call #t~ret6 := fibo1(~n - 1);< 1230#$Ultimate##0 ~n := #in~n; 1239#L10 assume !(~n < 1); 1266#L12 assume !(1 == ~n); 1208#L15 call #t~ret4 := fibo2(~n - 1);< 1331#$Ultimate##0 [2024-11-23 02:51:30,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1873386980, now seen corresponding path program 1 times [2024-11-23 02:51:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341620813] [2024-11-23 02:51:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:30,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 02:51:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341620813] [2024-11-23 02:51:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341620813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176717394] [2024-11-23 02:51:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:30,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:30,702 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:30,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-23 02:51:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:30,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 02:51:30,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:51:30,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 02:51:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176717394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:31,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 15 [2024-11-23 02:51:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362604410] [2024-11-23 02:51:31,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:31,277 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:31,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:31,277 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2024-11-23 02:51:31,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:31,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456194858] [2024-11-23 02:51:31,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:31,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:51:31,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:51:31,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:31,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:31,357 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:31,357 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:31,357 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:31,357 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:31,357 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:31,357 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,357 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:31,357 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:31,357 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2024-11-23 02:51:31,357 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:31,358 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:31,358 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,360 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,361 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,363 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,365 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,366 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,368 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,373 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,406 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:31,406 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,410 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-23 02:51:31,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,427 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:31,427 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:31,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,435 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-23 02:51:31,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,453 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:31,453 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:31,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,465 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-23 02:51:31,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,481 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:31,482 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:31,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,491 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-23 02:51:31,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,507 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:31,508 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:31,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,523 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-23 02:51:31,578 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:31,580 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:31,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,600 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-23 02:51:31,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,629 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:31,630 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:31,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-11-23 02:51:31,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,652 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-23 02:51:31,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:31,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-11-23 02:51:31,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,684 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-23 02:51:31,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:31,687 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:31,715 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:31,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,720 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:31,720 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:31,720 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:31,720 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:31,720 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:31,720 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,720 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:31,720 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:31,721 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2024-11-23 02:51:31,721 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:31,721 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:31,721 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,724 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,726 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,731 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,737 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:31,797 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:31,797 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:31,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,800 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-23 02:51:31,806 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 [2024-11-23 02:51:31,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,821 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:31,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,829 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-23 02:51:31,831 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 [2024-11-23 02:51:31,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,845 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:31,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,853 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-11-23 02:51:31,856 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 [2024-11-23 02:51:31,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,869 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:31,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,878 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-11-23 02:51:31,879 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 [2024-11-23 02:51:31,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,892 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:31,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,901 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-11-23 02:51:31,902 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 [2024-11-23 02:51:31,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,914 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:31,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,923 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-11-23 02:51:31,926 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 [2024-11-23 02:51:31,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,937 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,939 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:31,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,948 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-11-23 02:51:31,951 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 [2024-11-23 02:51:31,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:31,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:31,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:31,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:31,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:31,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:31,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:31,964 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:31,968 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:31,968 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:31,970 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:31,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-11-23 02:51:31,971 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:31,975 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:31,975 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:31,975 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2024-11-23 02:51:31,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:31,986 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:31,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:32,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:32,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:32,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:32,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:32,663 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-23 02:51:32,663 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 02:51:32,823 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2024-11-23 02:51:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 02:51:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-11-23 02:51:32,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-23 02:51:32,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:32,828 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:32,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:32,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:32,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:33,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:33,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:33,321 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-23 02:51:33,321 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 02:51:33,493 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2024-11-23 02:51:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 02:51:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-11-23 02:51:33,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-23 02:51:33,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:33,496 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:33,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:33,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:33,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:33,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:33,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:33,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:33,831 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 5 loop predicates [2024-11-23 02:51:33,831 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 02:51:33,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 538 states and 752 transitions. Complement of second has 29 states. [2024-11-23 02:51:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:33,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 02:51:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2024-11-23 02:51:33,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-23 02:51:33,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:33,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 44 letters. Loop has 8 letters. [2024-11-23 02:51:33,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:33,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 16 letters. [2024-11-23 02:51:33,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:33,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 538 states and 752 transitions. [2024-11-23 02:51:33,970 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2024-11-23 02:51:33,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 538 states to 437 states and 632 transitions. [2024-11-23 02:51:33,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 187 [2024-11-23 02:51:33,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2024-11-23 02:51:33,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 437 states and 632 transitions. [2024-11-23 02:51:33,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:33,989 INFO L218 hiAutomatonCegarLoop]: Abstraction has 437 states and 632 transitions. [2024-11-23 02:51:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states and 632 transitions. [2024-11-23 02:51:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2024-11-23 02:51:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 244 states have (on average 1.2868852459016393) internal successors, (314), 265 states have internal predecessors, (314), 71 states have call successors, (74), 55 states have call predecessors, (74), 51 states have return successors, (118), 45 states have call predecessors, (118), 69 states have call successors, (118) [2024-11-23 02:51:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 506 transitions. [2024-11-23 02:51:34,016 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 506 transitions. [2024-11-23 02:51:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 02:51:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-23 02:51:34,017 INFO L87 Difference]: Start difference. First operand 366 states and 506 transitions. Second operand has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-23 02:51:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:34,165 INFO L93 Difference]: Finished difference Result 398 states and 546 transitions. [2024-11-23 02:51:34,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 546 transitions. [2024-11-23 02:51:34,171 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2024-11-23 02:51:34,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 361 states and 506 transitions. [2024-11-23 02:51:34,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2024-11-23 02:51:34,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2024-11-23 02:51:34,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 361 states and 506 transitions. [2024-11-23 02:51:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:34,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 361 states and 506 transitions. [2024-11-23 02:51:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states and 506 transitions. [2024-11-23 02:51:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 325. [2024-11-23 02:51:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 216 states have (on average 1.2314814814814814) internal successors, (266), 242 states have internal predecessors, (266), 59 states have call successors, (61), 46 states have call predecessors, (61), 50 states have return successors, (105), 36 states have call predecessors, (105), 57 states have call successors, (105) [2024-11-23 02:51:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 432 transitions. [2024-11-23 02:51:34,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 325 states and 432 transitions. [2024-11-23 02:51:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 02:51:34,195 INFO L425 stractBuchiCegarLoop]: Abstraction has 325 states and 432 transitions. [2024-11-23 02:51:34,195 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-23 02:51:34,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 325 states and 432 transitions. [2024-11-23 02:51:34,196 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-23 02:51:34,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:34,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:34,198 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:34,198 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-23 02:51:34,198 INFO L745 eck$LassoCheckResult]: Stem: 4839#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4801#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4802#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4846#$Ultimate##0 ~n := #in~n; 4892#L10 assume !(~n < 1); 4891#L12 assume !(1 == ~n); 4877#L15 call #t~ret4 := fibo2(~n - 1);< 4890#$Ultimate##0 ~n := #in~n; 4889#L20 assume !(~n < 1); 4886#L22 assume !(1 == ~n); 4818#L25 call #t~ret6 := fibo1(~n - 1);< 4878#$Ultimate##0 ~n := #in~n; 4887#L10 assume !(~n < 1); 4966#L12 assume !(1 == ~n); 4956#L15 call #t~ret4 := fibo2(~n - 1);< 4985#$Ultimate##0 ~n := #in~n; 4995#L20 assume !(~n < 1); 4993#L22 assume 1 == ~n;#res := 1; 4990#fibo2FINAL assume true; 4984#fibo2EXIT >#52#return; 4816#L15-1 call #t~ret5 := fibo2(~n - 2);< 4820#$Ultimate##0 ~n := #in~n; 4969#L20 assume ~n < 1;#res := 0; 4967#fibo2FINAL assume true; 4965#fibo2EXIT >#54#return; 4963#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 4962#fibo1FINAL assume true; 4960#fibo1EXIT >#48#return; 4938#L25-1 call #t~ret7 := fibo1(~n - 2);< 4947#$Ultimate##0 ~n := #in~n; 5018#L10 assume ~n < 1;#res := 0; 5017#fibo1FINAL assume true; 5012#fibo1EXIT >#50#return; 5008#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5006#fibo2FINAL assume true; 5001#fibo2EXIT >#52#return; 4767#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 [2024-11-23 02:51:34,198 INFO L747 eck$LassoCheckResult]: Loop: 4958#$Ultimate##0 ~n := #in~n; 4775#L20 assume !(~n < 1); 4765#L22 assume !(1 == ~n); 4769#L25 call #t~ret6 := fibo1(~n - 1);< 4957#$Ultimate##0 ~n := #in~n; 4971#L10 assume !(~n < 1); 4972#L12 assume !(1 == ~n); 4768#L15 call #t~ret4 := fibo2(~n - 1);< 4774#$Ultimate##0 ~n := #in~n; 4775#L20 assume !(~n < 1); 4765#L22 assume !(1 == ~n); 4769#L25 call #t~ret6 := fibo1(~n - 1);< 4957#$Ultimate##0 ~n := #in~n; 4971#L10 assume !(~n < 1); 4972#L12 assume !(1 == ~n); 4768#L15 call #t~ret4 := fibo2(~n - 1);< 4774#$Ultimate##0 ~n := #in~n; 4776#L20 assume !(~n < 1); 5024#L22 assume 1 == ~n;#res := 1; 5021#fibo2FINAL assume true; 4988#fibo2EXIT >#52#return; 4766#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 ~n := #in~n; 4959#L20 assume ~n < 1;#res := 0; 5023#fibo2FINAL assume true; 5020#fibo2EXIT >#54#return; 4975#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5016#fibo1FINAL assume true; 5011#fibo1EXIT >#48#return; 4981#L25-1 call #t~ret7 := fibo1(~n - 2);< 5007#$Ultimate##0 ~n := #in~n; 5004#L10 assume !(~n < 1); 5002#L12 assume !(1 == ~n); 4979#L15 call #t~ret4 := fibo2(~n - 1);< 4989#$Ultimate##0 ~n := #in~n; 5015#L20 assume !(~n < 1); 5014#L22 assume 1 == ~n;#res := 1; 4928#fibo2FINAL assume true; 4987#fibo2EXIT >#52#return; 4766#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 ~n := #in~n; 4959#L20 assume ~n < 1;#res := 0; 5023#fibo2FINAL assume true; 5020#fibo2EXIT >#54#return; 4975#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5016#fibo1FINAL assume true; 5011#fibo1EXIT >#50#return; 5010#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5035#fibo2FINAL assume true; 4978#fibo2EXIT >#52#return; 4766#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 [2024-11-23 02:51:34,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1302122831, now seen corresponding path program 1 times [2024-11-23 02:51:34,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360157666] [2024-11-23 02:51:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:34,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 02:51:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360157666] [2024-11-23 02:51:34,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360157666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:34,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549043061] [2024-11-23 02:51:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:34,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:34,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:34,305 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:34,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-23 02:51:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:34,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:51:34,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 02:51:34,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 02:51:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549043061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:34,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-23 02:51:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84444855] [2024-11-23 02:51:34,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:34,483 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:34,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash 592500779, now seen corresponding path program 1 times [2024-11-23 02:51:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:34,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782863166] [2024-11-23 02:51:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:34,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 02:51:34,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782863166] [2024-11-23 02:51:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782863166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019429198] [2024-11-23 02:51:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:34,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:34,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:34,635 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:34,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-23 02:51:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:34,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 02:51:34,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 02:51:34,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 02:51:35,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019429198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:35,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:35,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-23 02:51:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742070660] [2024-11-23 02:51:35,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:35,005 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-23 02:51:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 02:51:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 02:51:35,006 INFO L87 Difference]: Start difference. First operand 325 states and 432 transitions. cyclomatic complexity: 114 Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-23 02:51:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:35,091 INFO L93 Difference]: Finished difference Result 355 states and 480 transitions. [2024-11-23 02:51:35,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 355 states and 480 transitions. [2024-11-23 02:51:35,094 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-23 02:51:35,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 355 states to 352 states and 476 transitions. [2024-11-23 02:51:35,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 189 [2024-11-23 02:51:35,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 189 [2024-11-23 02:51:35,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 352 states and 476 transitions. [2024-11-23 02:51:35,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:35,097 INFO L218 hiAutomatonCegarLoop]: Abstraction has 352 states and 476 transitions. [2024-11-23 02:51:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states and 476 transitions. [2024-11-23 02:51:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 332. [2024-11-23 02:51:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 220 states have (on average 1.2272727272727273) internal successors, (270), 248 states have internal predecessors, (270), 59 states have call successors, (61), 46 states have call predecessors, (61), 53 states have return successors, (112), 37 states have call predecessors, (112), 57 states have call successors, (112) [2024-11-23 02:51:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 443 transitions. [2024-11-23 02:51:35,105 INFO L240 hiAutomatonCegarLoop]: Abstraction has 332 states and 443 transitions. [2024-11-23 02:51:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:51:35,106 INFO L425 stractBuchiCegarLoop]: Abstraction has 332 states and 443 transitions. [2024-11-23 02:51:35,106 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-23 02:51:35,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 332 states and 443 transitions. [2024-11-23 02:51:35,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-23 02:51:35,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:35,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:35,109 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:35,109 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:35,109 INFO L745 eck$LassoCheckResult]: Stem: 6062#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6027#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6028#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6065#$Ultimate##0 ~n := #in~n; 6195#L10 assume !(~n < 1); 6183#L12 assume !(1 == ~n); 6100#L15 call #t~ret4 := fibo2(~n - 1);< 6182#$Ultimate##0 ~n := #in~n; 6180#L20 assume !(~n < 1); 6179#L22 assume !(1 == ~n); 6037#L25 call #t~ret6 := fibo1(~n - 1);< 6097#$Ultimate##0 ~n := #in~n; 6094#L10 assume !(~n < 1); 6086#L12 assume !(1 == ~n); 6082#L15 call #t~ret4 := fibo2(~n - 1);< 6083#$Ultimate##0 ~n := #in~n; 6101#L20 assume !(~n < 1); 6174#L22 assume !(1 == ~n); 6039#L25 call #t~ret6 := fibo1(~n - 1);< 6097#$Ultimate##0 ~n := #in~n; 6098#L10 assume !(~n < 1); 6185#L12 assume 1 == ~n;#res := 1; 6184#fibo1FINAL assume true; 6170#fibo1EXIT >#48#return; 6148#L25-1 call #t~ret7 := fibo1(~n - 2);< 6158#$Ultimate##0 ~n := #in~n; 6248#L10 assume ~n < 1;#res := 0; 6249#fibo1FINAL assume true; 6298#fibo1EXIT >#50#return; 6240#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6275#fibo2FINAL assume true; 6204#fibo2EXIT >#52#return; 5999#L15-1 [2024-11-23 02:51:35,110 INFO L747 eck$LassoCheckResult]: Loop: 5999#L15-1 call #t~ret5 := fibo2(~n - 2);< 6036#$Ultimate##0 ~n := #in~n; 6006#L20 assume !(~n < 1); 5996#L22 assume !(1 == ~n); 6000#L25 call #t~ret6 := fibo1(~n - 1);< 6203#$Ultimate##0 ~n := #in~n; 6202#L10 assume !(~n < 1); 6198#L12 assume !(1 == ~n); 5998#L15 call #t~ret4 := fibo2(~n - 1);< 6005#$Ultimate##0 ~n := #in~n; 6006#L20 assume !(~n < 1); 5996#L22 assume !(1 == ~n); 6000#L25 call #t~ret6 := fibo1(~n - 1);< 6203#$Ultimate##0 ~n := #in~n; 6202#L10 assume !(~n < 1); 6198#L12 assume !(1 == ~n); 5998#L15 call #t~ret4 := fibo2(~n - 1);< 6005#$Ultimate##0 ~n := #in~n; 6007#L20 assume !(~n < 1); 6260#L22 assume 1 == ~n;#res := 1; 6230#fibo2FINAL assume true; 6216#fibo2EXIT >#52#return; 5999#L15-1 call #t~ret5 := fibo2(~n - 2);< 6036#$Ultimate##0 ~n := #in~n; 6199#L20 assume ~n < 1;#res := 0; 6255#fibo2FINAL assume true; 6254#fibo2EXIT >#54#return; 6205#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6233#fibo1FINAL assume true; 6226#fibo1EXIT >#48#return; 6213#L25-1 call #t~ret7 := fibo1(~n - 2);< 6229#$Ultimate##0 ~n := #in~n; 6244#L10 assume ~n < 1;#res := 0; 6245#fibo1FINAL assume true; 6222#fibo1EXIT >#50#return; 6220#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6218#fibo2FINAL assume true; 6208#fibo2EXIT >#52#return; 5999#L15-1 [2024-11-23 02:51:35,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:35,110 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2024-11-23 02:51:35,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:35,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481572835] [2024-11-23 02:51:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:35,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 02:51:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481572835] [2024-11-23 02:51:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481572835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285116865] [2024-11-23 02:51:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:35,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:35,237 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:35,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-23 02:51:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:35,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:51:35,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:51:35,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:51:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285116865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:35,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-11-23 02:51:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109000062] [2024-11-23 02:51:35,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:35,758 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:35,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1165993954, now seen corresponding path program 1 times [2024-11-23 02:51:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560841628] [2024-11-23 02:51:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 02:51:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560841628] [2024-11-23 02:51:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560841628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379260661] [2024-11-23 02:51:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:35,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:35,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:35,876 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:35,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-23 02:51:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:35,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:51:35,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 02:51:35,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 02:51:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379260661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:36,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:36,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-23 02:51:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320880603] [2024-11-23 02:51:36,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:36,198 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-23 02:51:36,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 02:51:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-23 02:51:36,199 INFO L87 Difference]: Start difference. First operand 332 states and 443 transitions. cyclomatic complexity: 118 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-23 02:51:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:36,386 INFO L93 Difference]: Finished difference Result 351 states and 426 transitions. [2024-11-23 02:51:36,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 351 states and 426 transitions. [2024-11-23 02:51:36,389 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 50 [2024-11-23 02:51:36,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 351 states to 215 states and 252 transitions. [2024-11-23 02:51:36,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2024-11-23 02:51:36,390 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2024-11-23 02:51:36,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 215 states and 252 transitions. [2024-11-23 02:51:36,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:36,390 INFO L218 hiAutomatonCegarLoop]: Abstraction has 215 states and 252 transitions. [2024-11-23 02:51:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states and 252 transitions. [2024-11-23 02:51:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 203. [2024-11-23 02:51:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 150 states have internal predecessors, (163), 40 states have call successors, (41), 32 states have call predecessors, (41), 26 states have return successors, (36), 20 states have call predecessors, (36), 27 states have call successors, (36) [2024-11-23 02:51:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 240 transitions. [2024-11-23 02:51:36,394 INFO L240 hiAutomatonCegarLoop]: Abstraction has 203 states and 240 transitions. [2024-11-23 02:51:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 02:51:36,395 INFO L425 stractBuchiCegarLoop]: Abstraction has 203 states and 240 transitions. [2024-11-23 02:51:36,395 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-23 02:51:36,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 203 states and 240 transitions. [2024-11-23 02:51:36,396 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-23 02:51:36,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:36,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:36,397 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:36,397 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:36,397 INFO L745 eck$LassoCheckResult]: Stem: 7196#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7168#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 7169#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7199#$Ultimate##0 ~n := #in~n; 7233#L10 assume !(~n < 1); 7228#L12 assume !(1 == ~n); 7181#L15 call #t~ret4 := fibo2(~n - 1);< 7223#$Ultimate##0 ~n := #in~n; 7220#L20 assume !(~n < 1); 7217#L22 assume !(1 == ~n); 7176#L25 call #t~ret6 := fibo1(~n - 1);< 7214#$Ultimate##0 ~n := #in~n; 7245#L10 assume !(~n < 1); 7239#L12 assume !(1 == ~n); 7231#L15 call #t~ret4 := fibo2(~n - 1);< 7232#$Ultimate##0 ~n := #in~n; 7246#L20 assume !(~n < 1); 7242#L22 assume 1 == ~n;#res := 1; 7236#fibo2FINAL assume true; 7230#fibo2EXIT >#52#return; 7226#L15-1 call #t~ret5 := fibo2(~n - 2);< 7227#$Ultimate##0 ~n := #in~n; 7234#L20 assume ~n < 1;#res := 0; 7229#fibo2FINAL assume true; 7225#fibo2EXIT >#54#return; 7224#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7222#fibo1FINAL assume true; 7212#fibo1EXIT >#48#return; 7206#L25-1 call #t~ret7 := fibo1(~n - 2);< 7207#$Ultimate##0 ~n := #in~n; 7280#L10 assume !(~n < 1); 7278#L12 assume !(1 == ~n); 7265#L15 call #t~ret4 := fibo2(~n - 1);< 7270#$Ultimate##0 ~n := #in~n; 7312#L20 assume !(~n < 1); 7276#L22 assume 1 == ~n;#res := 1; 7272#fibo2FINAL assume true; 7263#fibo2EXIT >#52#return; 7262#L15-1 [2024-11-23 02:51:36,397 INFO L747 eck$LassoCheckResult]: Loop: 7262#L15-1 call #t~ret5 := fibo2(~n - 2);< 7294#$Ultimate##0 ~n := #in~n; 7293#L20 assume !(~n < 1); 7292#L22 assume !(1 == ~n); 7166#L25 call #t~ret6 := fibo1(~n - 1);< 7291#$Ultimate##0 ~n := #in~n; 7333#L10 assume !(~n < 1); 7334#L12 assume !(1 == ~n); 7137#L15 call #t~ret4 := fibo2(~n - 1);< 7296#$Ultimate##0 ~n := #in~n; 7194#L20 assume !(~n < 1); 7136#L22 assume 1 == ~n;#res := 1; 7138#fibo2FINAL assume true; 7186#fibo2EXIT >#52#return; 7262#L15-1 [2024-11-23 02:51:36,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:36,397 INFO L85 PathProgramCache]: Analyzing trace with hash 794867286, now seen corresponding path program 1 times [2024-11-23 02:51:36,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:36,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898359494] [2024-11-23 02:51:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 02:51:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898359494] [2024-11-23 02:51:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898359494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769052323] [2024-11-23 02:51:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:36,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,491 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-23 02:51:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:36,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 02:51:36,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:51:36,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:51:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769052323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:36,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-23 02:51:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794233111] [2024-11-23 02:51:36,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:36,645 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:36,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2024-11-23 02:51:36,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:36,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084682500] [2024-11-23 02:51:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:36,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:36,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:36,763 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:36,763 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:36,763 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:36,763 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:36,763 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:36,763 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,763 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:36,764 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:36,764 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration7_Loop [2024-11-23 02:51:36,764 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:36,764 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:36,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,766 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,772 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,778 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,780 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,814 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:36,814 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:36,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,816 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-11-23 02:51:36,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:36,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,832 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:36,832 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:36,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-11-23 02:51:36,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,841 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-11-23 02:51:36,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:36,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,853 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:36,853 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:36,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:36,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,862 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-11-23 02:51:36,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:36,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,875 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:36,875 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:36,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:36,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,883 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-11-23 02:51:36,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:36,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,896 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:36,896 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:36,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-11-23 02:51:36,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,904 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-11-23 02:51:36,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:36,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,917 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:36,918 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:36,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2024-11-23 02:51:36,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,927 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-11-23 02:51:36,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:36,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:36,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:36,948 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:36,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-11-23 02:51:36,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:36,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:36,962 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:36,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:36,968 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:36,968 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:36,968 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:36,968 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:36,968 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:36,968 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:36,968 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:36,968 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:36,968 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration7_Loop [2024-11-23 02:51:36,969 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:36,969 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:36,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,985 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:36,987 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:37,042 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:37,043 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:37,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:37,048 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:37,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-11-23 02:51:37,053 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 [2024-11-23 02:51:37,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:37,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:37,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:37,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:37,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:37,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:37,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:37,076 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:37,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:37,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:37,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:37,092 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:37,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-11-23 02:51:37,094 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 [2024-11-23 02:51:37,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:37,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:37,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:37,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:37,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:37,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:37,110 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:37,111 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:37,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:37,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:37,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:37,121 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:37,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-11-23 02:51:37,125 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 [2024-11-23 02:51:37,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:37,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:37,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:37,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:37,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:37,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:37,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:37,138 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:37,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2024-11-23 02:51:37,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:37,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:37,150 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:37,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-11-23 02:51:37,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:51:37,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:37,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:37,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:37,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:37,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:37,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:37,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:37,168 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:37,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2024-11-23 02:51:37,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:37,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:37,176 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:37,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-11-23 02:51:37,177 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 [2024-11-23 02:51:37,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:37,188 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:37,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:37,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:37,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:37,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:37,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:37,191 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:37,197 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:37,197 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:37,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:37,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:37,200 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:37,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-11-23 02:51:37,201 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:37,201 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:37,202 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:37,202 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-11-23 02:51:37,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:37,208 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:37,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:37,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:37,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:37,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:37,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 02:51:37,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:37,723 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-23 02:51:37,723 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-23 02:51:38,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 863 states and 1012 transitions. Complement of second has 48 states. [2024-11-23 02:51:38,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-23 02:51:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 60 transitions. [2024-11-23 02:51:38,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 60 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-23 02:51:38,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:38,022 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:38,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:38,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:38,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:38,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 02:51:38,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:38,266 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-23 02:51:38,267 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-23 02:51:38,454 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 514 states and 602 transitions. Complement of second has 30 states. [2024-11-23 02:51:38,455 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 [2024-11-23 02:51:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-23 02:51:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-23 02:51:38,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-23 02:51:38,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:38,458 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:38,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:38,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:38,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:38,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 02:51:38,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:38,770 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 8 loop predicates [2024-11-23 02:51:38,770 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-23 02:51:39,203 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1217 states and 1428 transitions. Complement of second has 121 states. [2024-11-23 02:51:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-23 02:51:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 67 transitions. [2024-11-23 02:51:39,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-23 02:51:39,210 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:39,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 52 letters. Loop has 14 letters. [2024-11-23 02:51:39,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:39,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 38 letters. Loop has 28 letters. [2024-11-23 02:51:39,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:39,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1217 states and 1428 transitions. [2024-11-23 02:51:39,220 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 154 [2024-11-23 02:51:39,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1217 states to 624 states and 740 transitions. [2024-11-23 02:51:39,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 267 [2024-11-23 02:51:39,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2024-11-23 02:51:39,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 624 states and 740 transitions. [2024-11-23 02:51:39,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:39,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 624 states and 740 transitions. [2024-11-23 02:51:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states and 740 transitions. [2024-11-23 02:51:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 453. [2024-11-23 02:51:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 309 states have (on average 1.1844660194174756) internal successors, (366), 334 states have internal predecessors, (366), 83 states have call successors, (87), 73 states have call predecessors, (87), 61 states have return successors, (78), 45 states have call predecessors, (78), 60 states have call successors, (78) [2024-11-23 02:51:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 531 transitions. [2024-11-23 02:51:39,235 INFO L240 hiAutomatonCegarLoop]: Abstraction has 453 states and 531 transitions. [2024-11-23 02:51:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:39,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 02:51:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-23 02:51:39,236 INFO L87 Difference]: Start difference. First operand 453 states and 531 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-23 02:51:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:39,437 INFO L93 Difference]: Finished difference Result 280 states and 304 transitions. [2024-11-23 02:51:39,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 280 states and 304 transitions. [2024-11-23 02:51:39,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2024-11-23 02:51:39,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 280 states to 86 states and 90 transitions. [2024-11-23 02:51:39,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-11-23 02:51:39,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2024-11-23 02:51:39,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 90 transitions. [2024-11-23 02:51:39,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:39,441 INFO L218 hiAutomatonCegarLoop]: Abstraction has 86 states and 90 transitions. [2024-11-23 02:51:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 90 transitions. [2024-11-23 02:51:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2024-11-23 02:51:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-23 02:51:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2024-11-23 02:51:39,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 70 transitions. [2024-11-23 02:51:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 02:51:39,448 INFO L425 stractBuchiCegarLoop]: Abstraction has 67 states and 70 transitions. [2024-11-23 02:51:39,448 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-23 02:51:39,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 70 transitions. [2024-11-23 02:51:39,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2024-11-23 02:51:39,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:39,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:39,449 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:39,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-23 02:51:39,450 INFO L745 eck$LassoCheckResult]: Stem: 11704#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11686#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11687#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11707#$Ultimate##0 ~n := #in~n; 11719#L10 assume !(~n < 1); 11717#L12 assume !(1 == ~n); 11680#L15 call #t~ret4 := fibo2(~n - 1);< 11699#$Ultimate##0 ~n := #in~n; 11720#L20 assume !(~n < 1); 11718#L22 assume !(1 == ~n); 11690#L25 call #t~ret6 := fibo1(~n - 1);< 11691#$Ultimate##0 ~n := #in~n; 11715#L10 assume !(~n < 1); 11713#L12 assume !(1 == ~n); 11710#L15 call #t~ret4 := fibo2(~n - 1);< 11711#$Ultimate##0 ~n := #in~n; 11716#L20 assume !(~n < 1); 11714#L22 assume 1 == ~n;#res := 1; 11712#fibo2FINAL assume true; 11709#fibo2EXIT >#52#return; 11666#L15-1 call #t~ret5 := fibo2(~n - 2);< 11672#$Ultimate##0 ~n := #in~n; 11673#L20 assume ~n < 1;#res := 0; 11667#fibo2FINAL assume true; 11696#fibo2EXIT >#54#return; 11705#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11706#fibo1FINAL assume true; 11708#fibo1EXIT >#48#return; 11678#L25-1 call #t~ret7 := fibo1(~n - 2);< 11681#$Ultimate##0 ~n := #in~n; 11683#L10 assume !(~n < 1); 11693#L12 assume 1 == ~n;#res := 1; 11677#fibo1FINAL assume true; 11679#fibo1EXIT >#50#return; 11682#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 11692#fibo2FINAL assume true; 11721#fibo2EXIT >#52#return; 11669#L15-1 [2024-11-23 02:51:39,450 INFO L747 eck$LassoCheckResult]: Loop: 11669#L15-1 call #t~ret5 := fibo2(~n - 2);< 11689#$Ultimate##0 ~n := #in~n; 11701#L20 assume !(~n < 1); 11668#L22 assume !(1 == ~n); 11671#L25 call #t~ret6 := fibo1(~n - 1);< 11684#$Ultimate##0 ~n := #in~n; 11685#L10 assume !(~n < 1); 11694#L12 assume !(1 == ~n); 11695#L15 call #t~ret4 := fibo2(~n - 1);< 11700#$Ultimate##0 ~n := #in~n; 11728#L20 assume !(~n < 1); 11727#L22 assume !(1 == ~n); 11688#L25 call #t~ret6 := fibo1(~n - 1);< 11726#$Ultimate##0 ~n := #in~n; 11725#L10 assume !(~n < 1); 11724#L12 assume !(1 == ~n); 11703#L15 call #t~ret4 := fibo2(~n - 1);< 11722#$Ultimate##0 ~n := #in~n; 11731#L20 assume !(~n < 1); 11730#L22 assume 1 == ~n;#res := 1; 11729#fibo2FINAL assume true; 11702#fibo2EXIT >#52#return; 11669#L15-1 [2024-11-23 02:51:39,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash -562711824, now seen corresponding path program 1 times [2024-11-23 02:51:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:39,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223596117] [2024-11-23 02:51:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:39,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:39,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:39,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash 878078665, now seen corresponding path program 2 times [2024-11-23 02:51:39,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:39,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101386194] [2024-11-23 02:51:39,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:39,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:39,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:51:39,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:51:39,477 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:39,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:39,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1575530616, now seen corresponding path program 2 times [2024-11-23 02:51:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149263415] [2024-11-23 02:51:39,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:39,499 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:51:39,499 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:51:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 02:51:39,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149263415] [2024-11-23 02:51:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149263415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972094818] [2024-11-23 02:51:39,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:39,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:39,594 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:39,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-23 02:51:39,630 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:51:39,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:51:39,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 02:51:39,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-23 02:51:39,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 02:51:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972094818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:39,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 12 [2024-11-23 02:51:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124105026] [2024-11-23 02:51:39,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:40,007 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:40,008 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:40,008 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:40,008 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:40,008 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:40,008 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:40,008 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:40,008 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:40,008 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2024-11-23 02:51:40,008 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:40,008 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:40,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,016 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,055 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:40,055 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:40,057 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:40,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2024-11-23 02:51:40,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:40,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:40,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2024-11-23 02:51:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:40,086 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:40,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2024-11-23 02:51:40,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:40,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:40,101 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:40,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2024-11-23 02:51:40,108 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:40,108 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:40,108 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:40,108 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:40,108 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:40,108 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:40,108 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:40,108 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:40,108 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2024-11-23 02:51:40,108 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:40,108 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:40,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,114 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,118 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,120 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,126 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,127 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:40,160 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:40,161 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:40,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:40,163 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:40,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2024-11-23 02:51:40,164 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 [2024-11-23 02:51:40,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:40,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:40,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:40,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:40,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:40,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:40,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:40,177 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:40,179 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-23 02:51:40,179 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-23 02:51:40,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:40,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:40,181 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:40,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2024-11-23 02:51:40,183 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:40,183 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:40,183 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:40,183 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-11-23 02:51:40,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:40,190 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:40,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:40,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2024-11-23 02:51:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:40,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:40,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:40,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:51:40,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:40,573 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2024-11-23 02:51:40,573 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:40,801 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 79 states and 83 transitions. Complement of second has 15 states. [2024-11-23 02:51:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:40,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2024-11-23 02:51:40,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-23 02:51:40,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:40,802 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:40,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:40,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:40,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:41,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:51:41,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:41,200 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2024-11-23 02:51:41,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:41,416 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 79 states and 83 transitions. Complement of second has 15 states. [2024-11-23 02:51:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2024-11-23 02:51:41,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-23 02:51:41,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:41,424 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:41,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:41,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:41,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:41,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:51:41,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:41,880 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 12 loop predicates [2024-11-23 02:51:41,880 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:42,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 198 states and 208 transitions. Complement of second has 100 states. [2024-11-23 02:51:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 56 transitions. [2024-11-23 02:51:42,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 56 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-23 02:51:42,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:42,173 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:42,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:42,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:42,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:42,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 02:51:42,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:51:42,622 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2024-11-23 02:51:42,623 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:43,143 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 113 states and 120 transitions. Complement of second has 41 states. [2024-11-23 02:51:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 2 stem states 13 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-23 02:51:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 54 transitions. [2024-11-23 02:51:43,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-23 02:51:43,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:43,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 59 letters. Loop has 22 letters. [2024-11-23 02:51:43,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:43,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 37 letters. Loop has 44 letters. [2024-11-23 02:51:43,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:43,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 120 transitions. [2024-11-23 02:51:43,147 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:51:43,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 0 states and 0 transitions. [2024-11-23 02:51:43,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-23 02:51:43,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-23 02:51:43,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-23 02:51:43,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:51:43,148 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:43,148 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:43,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:43,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 02:51:43,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-23 02:51:43,149 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 8 states have internal predecessors, (36), 6 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 02:51:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:43,149 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-23 02:51:43,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-23 02:51:43,149 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:51:43,149 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-23 02:51:43,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-23 02:51:43,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-23 02:51:43,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-23 02:51:43,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:51:43,150 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:43,150 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 02:51:43,150 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:43,150 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-23 02:51:43,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-23 02:51:43,150 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:51:43,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-23 02:51:43,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:51:43 BoogieIcfgContainer [2024-11-23 02:51:43,157 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-23 02:51:43,157 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:51:43,157 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:51:43,157 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:51:43,158 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:26" (3/4) ... [2024-11-23 02:51:43,160 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-23 02:51:43,161 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:51:43,161 INFO L158 Benchmark]: Toolchain (without parser) took 17396.81ms. Allocated memory was 197.1MB in the beginning and 297.8MB in the end (delta: 100.7MB). Free memory was 138.8MB in the beginning and 213.4MB in the end (delta: -74.6MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2024-11-23 02:51:43,161 INFO L158 Benchmark]: CDTParser took 1.06ms. Allocated memory is still 98.6MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:51:43,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.41ms. Allocated memory is still 197.1MB. Free memory was 138.3MB in the beginning and 167.9MB in the end (delta: -29.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-23 02:51:43,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.01ms. Allocated memory is still 197.1MB. Free memory was 167.9MB in the beginning and 165.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:51:43,162 INFO L158 Benchmark]: Boogie Preprocessor took 37.29ms. Allocated memory is still 197.1MB. Free memory was 165.8MB in the beginning and 164.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:51:43,162 INFO L158 Benchmark]: RCFGBuilder took 307.33ms. Allocated memory is still 197.1MB. Free memory was 164.7MB in the beginning and 153.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-23 02:51:43,162 INFO L158 Benchmark]: BuchiAutomizer took 16609.57ms. Allocated memory was 197.1MB in the beginning and 297.8MB in the end (delta: 100.7MB). Free memory was 153.2MB in the beginning and 213.4MB in the end (delta: -60.2MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2024-11-23 02:51:43,162 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 297.8MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:51:43,163 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06ms. Allocated memory is still 98.6MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.41ms. Allocated memory is still 197.1MB. Free memory was 138.3MB in the beginning and 167.9MB in the end (delta: -29.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.01ms. Allocated memory is still 197.1MB. Free memory was 167.9MB in the beginning and 165.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.29ms. Allocated memory is still 197.1MB. Free memory was 165.8MB in the beginning and 164.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 307.33ms. Allocated memory is still 197.1MB. Free memory was 164.7MB in the beginning and 153.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 16609.57ms. Allocated memory was 197.1MB in the beginning and 297.8MB in the end (delta: 100.7MB). Free memory was 153.2MB in the beginning and 213.4MB in the end (delta: -60.2MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 297.8MB. Free memory is still 213.4MB. 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 12 terminating modules (7 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 8 locations. One deterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function \old(n) and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function n and consists of 16 locations. 7 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.5s and 9 iterations. TraceHistogramMax:6. Analysis of lassos took 7.3s. Construction of modules took 1.5s. Büchi inclusion checks took 7.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 373 StatesRemovedByMinimization, 9 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, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/20 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 799 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 770 mSDsluCounter, 1330 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 907 mSDsCounter, 441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2236 IncrementalHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 441 mSolverCounterUnsat, 423 mSDtfsCounter, 2236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf91 smp82 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 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! [2024-11-23 02:51:43,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-23 02:51:43,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:43,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:43,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-23 02:51:43,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:44,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:44,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:44,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:44,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE