./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-2.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_7-2.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 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:51:42,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:51:42,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-23 02:51:42,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:51:42,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:51:42,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:51:42,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:51:42,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:51:42,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:51:42,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:51:42,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:51:42,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:51:42,374 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:51:42,375 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-23 02:51:42,376 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-23 02:51:42,376 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-23 02:51:42,377 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-23 02:51:42,377 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-23 02:51:42,377 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-23 02:51:42,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:51:42,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-23 02:51:42,378 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:51:42,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:51:42,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:51:42,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:51:42,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-23 02:51:42,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-23 02:51:42,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-23 02:51:42,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:51:42,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:51:42,382 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:51:42,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:51:42,383 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-23 02:51:42,383 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:51:42,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:51:42,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:51:42,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:51:42,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:51:42,384 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-23 02:51:42,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2024-11-23 02:51:42,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:51:42,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:51:42,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:51:42,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:51:42,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:51:42,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-11-23 02:51:43,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:51:44,089 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:51:44,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-11-23 02:51:44,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c03b815c5/655462102ca84121a588e2edb214f0cb/FLAG99fbd7323 [2024-11-23 02:51:44,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c03b815c5/655462102ca84121a588e2edb214f0cb [2024-11-23 02:51:44,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:51:44,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:51:44,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:51:44,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:51:44,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:51:44,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc494e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44, skipping insertion in model container [2024-11-23 02:51:44,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:51:44,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:51:44,689 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:51:44,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:51:44,717 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:51:44,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44 WrapperNode [2024-11-23 02:51:44,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:51:44,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:51:44,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:51:44,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:51:44,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,751 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-23 02:51:44,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:51:44,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:51:44,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:51:44,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:51:44,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,773 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 02:51:44,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:51:44,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:51:44,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:51:44,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:51:44,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (1/1) ... [2024-11-23 02:51:44,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:44,818 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 02:51:44,821 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 02:51:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:51:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:51:44,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:51:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:51:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-23 02:51:44,864 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-23 02:51:44,912 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:51:44,915 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:51:45,022 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-23 02:51:45,022 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:51:45,034 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:51:45,034 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 02:51:45,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:45 BoogieIcfgContainer [2024-11-23 02:51:45,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:51:45,037 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-23 02:51:45,038 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-23 02:51:45,041 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-23 02:51:45,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:51:45,042 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:51:44" (1/3) ... [2024-11-23 02:51:45,043 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4aee5c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:51:45, skipping insertion in model container [2024-11-23 02:51:45,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:51:45,043 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:44" (2/3) ... [2024-11-23 02:51:45,043 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4aee5c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:51:45, skipping insertion in model container [2024-11-23 02:51:45,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:51:45,044 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:45" (3/3) ... [2024-11-23 02:51:45,045 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_7-2.c [2024-11-23 02:51:45,088 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-23 02:51:45,088 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-23 02:51:45,088 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-23 02:51:45,088 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-23 02:51:45,088 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-23 02:51:45,089 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-23 02:51:45,089 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-23 02:51:45,089 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-23 02:51:45,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 02:51:45,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:51:45,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:45,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:45,114 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:51:45,114 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-23 02:51:45,115 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-23 02:51:45,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 02:51:45,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:51:45,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:45,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:45,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:51:45,116 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-23 02:51:45,122 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-11-23 02:51:45,122 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-11-23 02:51:45,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:45,128 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-11-23 02:51:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641900330] [2024-11-23 02:51:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:45,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:45,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:45,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-11-23 02:51:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095233338] [2024-11-23 02:51:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:45,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:45,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:45,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-11-23 02:51:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:45,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564675893] [2024-11-23 02:51:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:45,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:45,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:45,417 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:45,417 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:45,417 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:45,417 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:45,418 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:45,418 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,418 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:45,418 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:45,419 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2024-11-23 02:51:45,419 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:45,419 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:45,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,451 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,514 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:45,515 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,518 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 02:51:45,519 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 02:51:45,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:45,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:45,534 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:45,534 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:45,543 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 02:51:45,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,546 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 02:51:45,550 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 02:51:45,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:45,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:45,562 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:45,562 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:45,568 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 02:51:45,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,570 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 02:51:45,571 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 02:51:45,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:45,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:45,583 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:45,583 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:45,589 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 02:51:45,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,592 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 02:51:45,593 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 02:51:45,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:45,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:45,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:45,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,617 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 02:51:45,618 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 02:51:45,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:45,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:45,668 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:45,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:45,673 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:45,674 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:45,674 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:45,674 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:45,674 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:45,674 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,674 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:45,674 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:45,674 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2024-11-23 02:51:45,674 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:45,674 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:45,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:45,744 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:45,749 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:45,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,752 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 02:51:45,755 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 02:51:45,756 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 02:51:45,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:45,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:45,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:45,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:45,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:45,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:45,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:45,772 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:45,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-23 02:51:45,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,781 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 02:51:45,781 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 02:51:45,786 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 02:51:45,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:45,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:45,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:45,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:45,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:45,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:45,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:45,799 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:45,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-23 02:51:45,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,812 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 02:51:45,813 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 02:51:45,814 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 02:51:45,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:45,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:45,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:45,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:45,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:45,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:45,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:45,827 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:45,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-23 02:51:45,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,837 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 02:51:45,838 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 02:51:45,839 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 02:51:45,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:45,850 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:45,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:45,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:45,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:45,851 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:45,851 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:45,853 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:45,856 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:45,856 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:45,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:45,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:45,880 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 02:51:45,895 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 02:51:45,900 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:45,900 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:45,900 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:45,901 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-23 02:51:45,907 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 02:51:45,912 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:45,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:51:45,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:46,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:51:46,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:46,050 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 02:51:46,081 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-23 02:51:46,083 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:51:46,172 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 54 transitions. Complement of second has 16 states. [2024-11-23 02:51:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:51:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-11-23 02:51:46,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-23 02:51:46,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:46,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-23 02:51:46,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:46,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-23 02:51:46,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:46,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-11-23 02:51:46,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:51:46,203 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-11-23 02:51:46,204 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-11-23 02:51:46,204 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-23 02:51:46,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-11-23 02:51:46,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:46,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-11-23 02:51:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-11-23 02:51:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-23 02:51:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-23 02:51:46,229 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-23 02:51:46,229 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-23 02:51:46,229 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-23 02:51:46,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-23 02:51:46,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:51:46,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:46,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:46,231 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:46,231 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:46,232 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-11-23 02:51:46,232 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-11-23 02:51:46,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-11-23 02:51:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:46,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679425413] [2024-11-23 02:51:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:46,367 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 02:51:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:46,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679425413] [2024-11-23 02:51:46,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679425413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:51:46,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:51:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 02:51:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558380769] [2024-11-23 02:51:46,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:51:46,373 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-11-23 02:51:46,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:46,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688288367] [2024-11-23 02:51:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:51:46,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:46,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688288367] [2024-11-23 02:51:46,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688288367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:51:46,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:51:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 02:51:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508479811] [2024-11-23 02:51:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:51:46,426 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-23 02:51:46,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:51:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:51:46,429 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:46,497 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-23 02:51:46,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-11-23 02:51:46,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:51:46,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-11-23 02:51:46,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-23 02:51:46,502 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-11-23 02:51:46,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-11-23 02:51:46,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:46,502 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-23 02:51:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-11-23 02:51:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-23 02:51:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-23 02:51:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-23 02:51:46,505 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-23 02:51:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:51:46,506 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-23 02:51:46,506 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-23 02:51:46,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-11-23 02:51:46,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:51:46,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:46,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:46,509 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:46,509 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:46,509 INFO L745 eck$LassoCheckResult]: Stem: 199#$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(11, 2);call #Ultimate.allocInit(12, 3); 200#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 184#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 183#$Ultimate##0 ~n := #in~n; 185#L8 assume !(~n < 1); 198#L10 assume !(1 == ~n); 187#L13 call #t~ret4 := fibo(~n - 1);< 186#$Ultimate##0 ~n := #in~n; 188#L8 assume !(~n < 1); 206#L10 assume 1 == ~n;#res := 1; 205#fiboFINAL assume true; 204#fiboEXIT >#35#return; 190#L13-1 [2024-11-23 02:51:46,509 INFO L747 eck$LassoCheckResult]: Loop: 190#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 196#L8 assume !(~n < 1); 197#L10 assume !(1 == ~n); 189#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 196#L8 assume !(~n < 1); 197#L10 assume 1 == ~n;#res := 1; 201#fiboFINAL assume true; 202#fiboEXIT >#35#return; 190#L13-1 [2024-11-23 02:51:46,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-11-23 02:51:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:46,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507261932] [2024-11-23 02:51:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:46,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:46,589 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 02:51:46,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507261932] [2024-11-23 02:51:46,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507261932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539778305] [2024-11-23 02:51:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:46,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:46,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:46,593 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:46,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 02:51:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:46,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:51:46,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:46,638 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 02:51:46,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:46,717 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 02:51:46,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539778305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:46,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:46,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-23 02:51:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629648548] [2024-11-23 02:51:46,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:46,718 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:46,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-11-23 02:51:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417772231] [2024-11-23 02:51:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:46,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:46,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:46,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:46,821 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:46,821 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:46,821 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:46,821 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:46,821 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:46,822 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,822 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:46,822 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:46,822 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2024-11-23 02:51:46,822 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:46,822 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:46,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:46,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:46,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:46,830 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:46,835 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:46,866 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:46,866 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:46,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:46,869 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 02:51:46,870 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 02:51:46,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:46,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:46,884 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:46,884 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:46,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:46,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:46,896 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 02:51:46,897 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 02:51:46,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:46,898 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:46,910 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:46,910 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:46,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:46,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:46,917 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 02:51:46,918 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 02:51:46,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:46,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:46,930 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:46,930 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:46,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:46,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:46,937 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 02:51:46,939 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 02:51:46,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:46,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:46,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-23 02:51:46,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:46,959 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 02:51:46,960 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 02:51:46,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:46,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:46,987 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:46,994 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 02:51:46,994 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:46,994 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:46,994 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:46,994 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:46,994 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:46,994 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:46,994 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:46,995 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:46,995 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2024-11-23 02:51:46,995 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:46,995 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:46,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:47,007 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:47,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:47,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:47,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:47,049 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:47,049 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:47,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,052 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:51:47,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-23 02:51:47,053 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 02:51:47,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:47,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:47,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:47,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:47,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:47,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:47,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:47,067 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:47,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:47,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:47,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,074 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 02:51:47,076 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 02:51:47,078 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 02:51:47,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:47,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:47,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:47,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:47,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:47,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:47,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:47,091 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:47,097 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 02:51:47,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,100 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 02:51:47,101 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 02:51:47,102 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 02:51:47,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:47,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:47,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:47,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:47,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:47,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:47,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:47,114 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:47,120 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 02:51:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:47,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,121 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 02:51:47,122 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 02:51:47,123 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 02:51:47,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:47,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:47,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:47,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:47,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:47,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:47,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:47,135 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:47,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:47,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:47,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,142 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 02:51:47,143 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 02:51:47,144 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 02:51:47,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:47,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:47,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:47,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:47,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:47,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:47,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:47,157 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:47,159 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:47,159 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:47,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:47,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,161 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 02:51:47,162 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 02:51:47,163 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:47,163 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:47,163 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:47,163 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-23 02:51:47,168 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 02:51:47,169 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:47,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:47,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:51:47,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:47,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:47,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:47,382 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 02:51:47,383 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-23 02:51:47,383 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 02:51:47,553 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-11-23 02:51:47,553 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 02:51:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 02:51:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-23 02:51:47,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-11-23 02:51:47,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:47,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-11-23 02:51:47,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:47,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-11-23 02:51:47,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:47,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-11-23 02:51:47,560 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-23 02:51:47,564 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-11-23 02:51:47,564 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-11-23 02:51:47,564 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-11-23 02:51:47,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-11-23 02:51:47,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:47,564 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-11-23 02:51:47,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-11-23 02:51:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-11-23 02:51:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-23 02:51:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-11-23 02:51:47,578 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-11-23 02:51:47,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:47,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 02:51:47,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 02:51:47,579 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 02:51:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:47,687 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-11-23 02:51:47,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-11-23 02:51:47,689 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-23 02:51:47,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-11-23 02:51:47,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-11-23 02:51:47,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-11-23 02:51:47,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-11-23 02:51:47,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:47,695 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-11-23 02:51:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-11-23 02:51:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-23 02:51:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-23 02:51:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-11-23 02:51:47,711 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-23 02:51:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 02:51:47,712 INFO L425 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-23 02:51:47,712 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-23 02:51:47,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-11-23 02:51:47,713 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-23 02:51:47,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:47,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:47,714 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:47,714 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:47,714 INFO L745 eck$LassoCheckResult]: Stem: 792#$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(11, 2);call #Ultimate.allocInit(12, 3); 793#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 778#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 779#$Ultimate##0 ~n := #in~n; 796#L8 assume !(~n < 1); 797#L10 assume !(1 == ~n); 766#L13 call #t~ret4 := fibo(~n - 1);< 765#$Ultimate##0 ~n := #in~n; 767#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 770#L13 call #t~ret4 := fibo(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 822#L10 assume !(1 == ~n); 817#L13 call #t~ret4 := fibo(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 822#L10 assume !(1 == ~n); 817#L13 call #t~ret4 := fibo(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 825#L8 assume !(~n < 1); 823#L10 assume 1 == ~n;#res := 1; 821#fiboFINAL assume true; 820#fiboEXIT >#35#return; 803#L13-1 call #t~ret5 := fibo(~n - 2);< 818#$Ultimate##0 ~n := #in~n; 864#L8 assume ~n < 1;#res := 0; 862#fiboFINAL assume true; 861#fiboEXIT >#37#return; 859#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 858#fiboFINAL assume true; 852#fiboEXIT >#35#return; 801#L13-1 [2024-11-23 02:51:47,714 INFO L747 eck$LassoCheckResult]: Loop: 801#L13-1 call #t~ret5 := fibo(~n - 2);< 769#$Ultimate##0 ~n := #in~n; 856#L8 assume !(~n < 1); 798#L10 assume !(1 == ~n); 800#L13 call #t~ret4 := fibo(~n - 1);< 769#$Ultimate##0 ~n := #in~n; 856#L8 assume !(~n < 1); 798#L10 assume 1 == ~n;#res := 1; 802#fiboFINAL assume true; 848#fiboEXIT >#35#return; 801#L13-1 [2024-11-23 02:51:47,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-11-23 02:51:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:47,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788248020] [2024-11-23 02:51:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:47,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:47,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-23 02:51:47,868 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 02:51:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:51:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788248020] [2024-11-23 02:51:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788248020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102144483] [2024-11-23 02:51:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:47,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:47,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:47,967 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:47,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 02:51:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:47,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:51:47,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 02:51:48,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:51:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102144483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:48,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:48,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 16 [2024-11-23 02:51:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175324847] [2024-11-23 02:51:48,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:48,277 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:48,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 2 times [2024-11-23 02:51:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:48,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770136214] [2024-11-23 02:51:48,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:48,282 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:51:48,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:51:48,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:48,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:48,366 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:48,366 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:48,366 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:48,366 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:48,366 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:48,366 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,366 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:48,367 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:48,367 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration4_Loop [2024-11-23 02:51:48,367 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:48,367 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:48,367 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,372 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,376 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,409 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:48,410 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:48,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,428 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 02:51:48,429 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 02:51:48,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:48,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:48,442 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:48,442 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:48,448 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 02:51:48,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,451 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 02:51:48,451 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 02:51:48,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:48,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:48,464 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:48,464 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:48,469 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 02:51:48,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,471 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 02:51:48,471 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 02:51:48,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:48,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:48,489 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 02:51:48,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,491 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 02:51:48,492 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 02:51:48,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:48,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:48,505 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:48,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-23 02:51:48,511 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:48,512 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:48,512 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:48,512 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:48,512 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:48,512 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,512 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:48,512 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:48,512 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration4_Loop [2024-11-23 02:51:48,512 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:48,512 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:48,512 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,523 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:48,548 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:48,548 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:48,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,550 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 02:51:48,551 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 02:51:48,552 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 02:51:48,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:48,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:48,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:48,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:48,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:48,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:48,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:48,564 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:48,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-23 02:51:48,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,573 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 02:51:48,573 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 02:51:48,575 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 02:51:48,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:48,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:48,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:48,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:48,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:48,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:48,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:48,587 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:48,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-11-23 02:51:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,594 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 02:51:48,595 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 02:51:48,597 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 02:51:48,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:48,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:48,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:48,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:48,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:48,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:48,608 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:48,609 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:48,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:48,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,617 INFO L229 MonitoredProcess]: Starting monitored process 32 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 02:51:48,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-23 02:51:48,619 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 02:51:48,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:48,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:48,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:48,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:48,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:48,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:48,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:48,633 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:48,637 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:48,637 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:48,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:48,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:48,639 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 02:51:48,639 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 02:51:48,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:48,640 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:48,640 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:48,640 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-23 02:51:48,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-11-23 02:51:48,646 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:48,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:48,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:48,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:48,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:48,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:48,931 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 02:51:48,932 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-23 02:51:48,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:49,128 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 190 states and 265 transitions. Complement of second has 37 states. [2024-11-23 02:51:49,130 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 02:51:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-23 02:51:49,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-23 02:51:49,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:49,132 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:49,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:49,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:49,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:49,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2024-11-23 02:51:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:49,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:49,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:49,394 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 02:51:49,394 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-23 02:51:49,394 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:49,527 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 296 states and 402 transitions. Complement of second has 29 states. [2024-11-23 02:51:49,531 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 02:51:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2024-11-23 02:51:49,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-23 02:51:49,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:49,533 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:49,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:49,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:49,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:49,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 02:51:49,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:49,787 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 02:51:49,787 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 6 loop predicates [2024-11-23 02:51:49,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:49,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 817 states and 1129 transitions. Complement of second has 135 states. [2024-11-23 02:51:49,983 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 02:51:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-23 02:51:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2024-11-23 02:51:49,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-23 02:51:49,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:49,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 42 letters. Loop has 10 letters. [2024-11-23 02:51:49,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:49,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 20 letters. [2024-11-23 02:51:49,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:49,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 817 states and 1129 transitions. [2024-11-23 02:51:49,996 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2024-11-23 02:51:50,004 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 817 states to 418 states and 629 transitions. [2024-11-23 02:51:50,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2024-11-23 02:51:50,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2024-11-23 02:51:50,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 418 states and 629 transitions. [2024-11-23 02:51:50,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:50,005 INFO L218 hiAutomatonCegarLoop]: Abstraction has 418 states and 629 transitions. [2024-11-23 02:51:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states and 629 transitions. [2024-11-23 02:51:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 356. [2024-11-23 02:51:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 223 states have (on average 1.1973094170403586) internal successors, (267), 239 states have internal predecessors, (267), 75 states have call successors, (84), 46 states have call predecessors, (84), 58 states have return successors, (142), 70 states have call predecessors, (142), 71 states have call successors, (142) [2024-11-23 02:51:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 493 transitions. [2024-11-23 02:51:50,041 INFO L240 hiAutomatonCegarLoop]: Abstraction has 356 states and 493 transitions. [2024-11-23 02:51:50,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 02:51:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-23 02:51:50,042 INFO L87 Difference]: Start difference. First operand 356 states and 493 transitions. Second operand has 17 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 9 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-23 02:51:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:50,230 INFO L93 Difference]: Finished difference Result 521 states and 846 transitions. [2024-11-23 02:51:50,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 521 states and 846 transitions. [2024-11-23 02:51:50,237 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2024-11-23 02:51:50,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 521 states to 511 states and 830 transitions. [2024-11-23 02:51:50,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 244 [2024-11-23 02:51:50,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2024-11-23 02:51:50,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 511 states and 830 transitions. [2024-11-23 02:51:50,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:50,250 INFO L218 hiAutomatonCegarLoop]: Abstraction has 511 states and 830 transitions. [2024-11-23 02:51:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states and 830 transitions. [2024-11-23 02:51:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 430. [2024-11-23 02:51:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 263 states have (on average 1.1711026615969582) internal successors, (308), 285 states have internal predecessors, (308), 94 states have call successors, (104), 51 states have call predecessors, (104), 73 states have return successors, (237), 93 states have call predecessors, (237), 88 states have call successors, (237) [2024-11-23 02:51:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 649 transitions. [2024-11-23 02:51:50,284 INFO L240 hiAutomatonCegarLoop]: Abstraction has 430 states and 649 transitions. [2024-11-23 02:51:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 02:51:50,285 INFO L425 stractBuchiCegarLoop]: Abstraction has 430 states and 649 transitions. [2024-11-23 02:51:50,285 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-23 02:51:50,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 430 states and 649 transitions. [2024-11-23 02:51:50,288 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-23 02:51:50,288 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:50,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:50,290 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:50,290 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-23 02:51:50,290 INFO L745 eck$LassoCheckResult]: Stem: 3935#$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(11, 2);call #Ultimate.allocInit(12, 3); 3936#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 3926#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3927#$Ultimate##0 ~n := #in~n; 3970#L8 assume !(~n < 1); 3969#L10 assume !(1 == ~n); 3965#L13 call #t~ret4 := fibo(~n - 1);< 3968#$Ultimate##0 ~n := #in~n; 3967#L8 assume !(~n < 1); 3966#L10 assume !(1 == ~n); 3961#L13 call #t~ret4 := fibo(~n - 1);< 3964#$Ultimate##0 ~n := #in~n; 3963#L8 assume !(~n < 1); 3962#L10 assume !(1 == ~n); 3958#L13 call #t~ret4 := fibo(~n - 1);< 3960#$Ultimate##0 ~n := #in~n; 3957#L8 assume !(~n < 1); 3959#L10 assume !(1 == ~n); 3941#L13 call #t~ret4 := fibo(~n - 1);< 3953#$Ultimate##0 ~n := #in~n; 3954#L8 assume !(~n < 1); 3956#L10 assume !(1 == ~n); 3942#L13 call #t~ret4 := fibo(~n - 1);< 3953#$Ultimate##0 ~n := #in~n; 3955#L8 assume !(~n < 1); 3940#L10 assume 1 == ~n;#res := 1; 3943#fiboFINAL assume true; 4023#fiboEXIT >#35#return; 4007#L13-1 call #t~ret5 := fibo(~n - 2);< 4019#$Ultimate##0 ~n := #in~n; 4295#L8 assume !(~n < 1); 4060#L10 assume !(1 == ~n); 4062#L13 call #t~ret4 := fibo(~n - 1);< 4310#$Ultimate##0 ~n := #in~n; 4316#L8 assume !(~n < 1); 4314#L10 assume !(1 == ~n); 3918#L13 call #t~ret4 := fibo(~n - 1);< 4321#$Ultimate##0 [2024-11-23 02:51:50,291 INFO L747 eck$LassoCheckResult]: Loop: 4321#$Ultimate##0 ~n := #in~n; 3950#L8 assume !(~n < 1); 3951#L10 assume !(1 == ~n); 3920#L13 call #t~ret4 := fibo(~n - 1);< 4321#$Ultimate##0 [2024-11-23 02:51:50,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1414791404, now seen corresponding path program 1 times [2024-11-23 02:51:50,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211161040] [2024-11-23 02:51:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 02:51:50,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211161040] [2024-11-23 02:51:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211161040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220441158] [2024-11-23 02:51:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:51:50,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:50,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,457 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:50,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-23 02:51:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:50,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 02:51:50,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 02:51:50,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 02:51:50,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220441158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:50,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:50,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-11-23 02:51:50,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549495830] [2024-11-23 02:51:50,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:50,668 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:50,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2024-11-23 02:51:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985650965] [2024-11-23 02:51:50,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:50,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:51:50,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:51:50,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:50,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:50,703 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:50,703 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:50,703 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:50,703 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:50,703 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:50,703 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,703 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:50,703 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:50,703 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2024-11-23 02:51:50,703 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:50,703 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:50,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,708 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,709 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,740 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:50,740 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:50,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,742 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 02:51:50,743 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 02:51:50,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:50,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:50,755 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:50,755 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:50,762 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 02:51:50,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,764 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 02:51:50,765 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 02:51:50,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:50,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:50,781 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:50,781 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:50,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-11-23 02:51:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,790 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 02:51:50,796 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 02:51:50,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:50,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:50,812 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:50,812 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:50,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-11-23 02:51:50,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,820 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 02:51:50,821 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 02:51:50,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:50,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:50,838 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 02:51:50,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,839 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 02:51:50,840 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 02:51:50,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:50,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:50,886 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:50,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:50,890 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:50,890 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:50,890 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:50,891 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:50,891 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:50,891 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,891 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:50,891 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:50,891 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2024-11-23 02:51:50,891 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:50,891 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:50,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,893 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,894 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,895 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:50,930 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:50,930 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:50,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,931 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 02:51:50,932 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 02:51:50,933 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 02:51:50,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:50,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:50,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:50,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:50,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:50,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:50,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:50,945 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:50,951 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 02:51:50,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,954 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 02:51:50,955 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 02:51:50,956 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 02:51:50,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:50,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:50,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:50,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:50,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:50,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:50,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:50,971 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:50,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2024-11-23 02:51:50,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:50,980 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 02:51:50,982 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 02:51:50,983 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 02:51:50,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:50,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:50,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:50,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:50,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:50,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:50,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:50,995 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:51,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-11-23 02:51:51,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:51,003 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 02:51:51,003 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 02:51:51,005 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 02:51:51,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:51,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:51,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:51,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:51,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:51,015 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:51,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:51,017 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:51:51,023 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 02:51:51,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:51,028 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 02:51:51,029 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 02:51:51,031 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 02:51:51,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:51,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:51,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:51,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:51,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:51,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:51,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:51,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:51,045 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:51,045 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:51,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:51,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:51,046 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 02:51:51,047 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 02:51:51,048 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:51,048 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:51,048 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:51,048 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-23 02:51:51,054 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 02:51:51,055 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:51,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:51,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 02:51:51,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:51,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:51:51,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:51,208 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 02:51:51,208 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:51:51,208 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,256 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 446 states and 665 transitions. Complement of second has 15 states. [2024-11-23 02:51:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-23 02:51:51,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2024-11-23 02:51:51,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:51,258 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:51,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:51,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 02:51:51,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:51,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:51:51,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:51,400 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 02:51:51,400 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:51:51,401 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,452 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 446 states and 665 transitions. Complement of second has 15 states. [2024-11-23 02:51:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-23 02:51:51,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2024-11-23 02:51:51,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:51,453 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:51,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:51,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 02:51:51,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:51,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:51:51,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:51,600 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 02:51:51,600 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:51:51,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 575 states and 798 transitions. Complement of second has 19 states. [2024-11-23 02:51:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-11-23 02:51:51,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 37 letters. Loop has 4 letters. [2024-11-23 02:51:51,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:51,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 41 letters. Loop has 4 letters. [2024-11-23 02:51:51,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:51,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 37 letters. Loop has 8 letters. [2024-11-23 02:51:51,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:51,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 575 states and 798 transitions. [2024-11-23 02:51:51,668 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-23 02:51:51,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 575 states to 472 states and 693 transitions. [2024-11-23 02:51:51,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2024-11-23 02:51:51,673 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 184 [2024-11-23 02:51:51,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 472 states and 693 transitions. [2024-11-23 02:51:51,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:51,674 INFO L218 hiAutomatonCegarLoop]: Abstraction has 472 states and 693 transitions. [2024-11-23 02:51:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states and 693 transitions. [2024-11-23 02:51:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 460. [2024-11-23 02:51:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 290 states have (on average 1.1551724137931034) internal successors, (335), 315 states have internal predecessors, (335), 94 states have call successors, (104), 51 states have call predecessors, (104), 76 states have return successors, (237), 93 states have call predecessors, (237), 88 states have call successors, (237) [2024-11-23 02:51:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 676 transitions. [2024-11-23 02:51:51,691 INFO L240 hiAutomatonCegarLoop]: Abstraction has 460 states and 676 transitions. [2024-11-23 02:51:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 02:51:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-23 02:51:51,692 INFO L87 Difference]: Start difference. First operand 460 states and 676 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:51,854 INFO L93 Difference]: Finished difference Result 544 states and 818 transitions. [2024-11-23 02:51:51,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 544 states and 818 transitions. [2024-11-23 02:51:51,860 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-23 02:51:51,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 544 states to 527 states and 796 transitions. [2024-11-23 02:51:51,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 203 [2024-11-23 02:51:51,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 203 [2024-11-23 02:51:51,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 527 states and 796 transitions. [2024-11-23 02:51:51,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:51,877 INFO L218 hiAutomatonCegarLoop]: Abstraction has 527 states and 796 transitions. [2024-11-23 02:51:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states and 796 transitions. [2024-11-23 02:51:51,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-11-23 02:51:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 486. [2024-11-23 02:51:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 309 states have (on average 1.1521035598705502) internal successors, (356), 335 states have internal predecessors, (356), 102 states have call successors, (114), 58 states have call predecessors, (114), 75 states have return successors, (223), 92 states have call predecessors, (223), 95 states have call successors, (223) [2024-11-23 02:51:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 693 transitions. [2024-11-23 02:51:51,893 INFO L240 hiAutomatonCegarLoop]: Abstraction has 486 states and 693 transitions. [2024-11-23 02:51:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 02:51:51,896 INFO L425 stractBuchiCegarLoop]: Abstraction has 486 states and 693 transitions. [2024-11-23 02:51:51,896 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-23 02:51:51,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 486 states and 693 transitions. [2024-11-23 02:51:51,898 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-23 02:51:51,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:51:51,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:51:51,899 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:51:51,899 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-23 02:51:51,899 INFO L745 eck$LassoCheckResult]: Stem: 7545#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 7546#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 7524#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 7525#$Ultimate##0 ~n := #in~n; 7597#L8 assume !(~n < 1); 7595#L10 assume !(1 == ~n); 7577#L13 call #t~ret4 := fibo(~n - 1);< 7594#$Ultimate##0 ~n := #in~n; 7584#L8 assume !(~n < 1); 7581#L10 assume !(1 == ~n); 7576#L13 call #t~ret4 := fibo(~n - 1);< 7578#$Ultimate##0 ~n := #in~n; 7718#L8 assume !(~n < 1); 7717#L10 assume !(1 == ~n); 7588#L13 call #t~ret4 := fibo(~n - 1);< 7593#$Ultimate##0 ~n := #in~n; 7629#L8 assume !(~n < 1); 7628#L10 assume !(1 == ~n); 7617#L13 call #t~ret4 := fibo(~n - 1);< 7619#$Ultimate##0 ~n := #in~n; 7667#L8 assume !(~n < 1); 7659#L10 assume !(1 == ~n); 7605#L13 call #t~ret4 := fibo(~n - 1);< 7637#$Ultimate##0 ~n := #in~n; 7653#L8 assume !(~n < 1); 7652#L10 assume !(1 == ~n); 7608#L13 call #t~ret4 := fibo(~n - 1);< 7637#$Ultimate##0 ~n := #in~n; 7655#L8 assume !(~n < 1); 7656#L10 assume 1 == ~n;#res := 1; 7654#fiboFINAL assume true; 7651#fiboEXIT >#35#return; 7611#L13-1 call #t~ret5 := fibo(~n - 2);< 7634#$Ultimate##0 ~n := #in~n; 7786#L8 assume !(~n < 1); 7949#L10 assume !(1 == ~n); 7947#L13 call #t~ret4 := fibo(~n - 1);< 7948#$Ultimate##0 ~n := #in~n; 7964#L8 assume !(~n < 1); 7962#L10 assume !(1 == ~n); 7562#L13 call #t~ret4 := fibo(~n - 1);< 7559#$Ultimate##0 ~n := #in~n; 7563#L8 assume !(~n < 1); 7973#L10 assume !(1 == ~n); 7561#L13 [2024-11-23 02:51:51,899 INFO L747 eck$LassoCheckResult]: Loop: 7561#L13 call #t~ret4 := fibo(~n - 1);< 7559#$Ultimate##0 ~n := #in~n; 7563#L8 assume !(~n < 1); 7973#L10 assume !(1 == ~n); 7561#L13 [2024-11-23 02:51:51,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 283397944, now seen corresponding path program 2 times [2024-11-23 02:51:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:51,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082193707] [2024-11-23 02:51:51,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:51,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:51,907 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:51:51,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:51:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:51:52,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:51:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082193707] [2024-11-23 02:51:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082193707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:51:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107867306] [2024-11-23 02:51:52,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:51:52,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:51:52,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,062 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:51:52,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-23 02:51:52,090 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:51:52,091 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:51:52,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 02:51:52,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:51:52,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:51:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 02:51:52,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107867306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:51:52,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:51:52,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2024-11-23 02:51:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260446238] [2024-11-23 02:51:52,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:51:52,262 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-23 02:51:52,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1955414, now seen corresponding path program 3 times [2024-11-23 02:51:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:51:52,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726026471] [2024-11-23 02:51:52,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:51:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:51:52,264 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 02:51:52,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:51:52,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:51:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:51:52,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:51:52,305 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:52,305 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:52,305 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:52,305 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:52,305 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:51:52,306 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,306 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:52,306 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:52,306 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2024-11-23 02:51:52,306 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:52,306 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:52,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,317 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,319 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,356 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:52,357 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:51:52,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,359 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 02:51:52,360 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 02:51:52,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:52,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:52,371 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:52,371 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:52,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-11-23 02:51:52,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,378 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 02:51:52,379 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 02:51:52,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:52,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:52,390 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:52,390 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:52,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2024-11-23 02:51:52,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,397 INFO L229 MonitoredProcess]: Starting monitored process 49 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 02:51:52,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-11-23 02:51:52,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:52,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:52,410 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:51:52,411 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:51:52,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2024-11-23 02:51:52,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,418 INFO L229 MonitoredProcess]: Starting monitored process 50 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 02:51:52,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-11-23 02:51:52,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:51:52,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:52,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2024-11-23 02:51:52,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,447 INFO L229 MonitoredProcess]: Starting monitored process 51 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 02:51:52,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2024-11-23 02:51:52,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:51:52,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:51:52,594 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:51:52,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:52,602 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:51:52,602 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:51:52,602 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:51:52,602 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:51:52,602 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:51:52,602 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,602 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:51:52,602 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:51:52,602 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2024-11-23 02:51:52,602 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:51:52,602 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:51:52,603 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,612 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,616 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:51:52,650 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:51:52,650 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:51:52,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,651 INFO L229 MonitoredProcess]: Starting monitored process 52 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 02:51:52,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-11-23 02:51:52,653 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 02:51:52,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:51:52,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:51:52,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:51:52,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:51:52,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:51:52,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:51:52,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:51:52,667 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:51:52,669 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:51:52,669 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:51:52,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:51:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:51:52,671 INFO L229 MonitoredProcess]: Starting monitored process 53 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 02:51:52,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2024-11-23 02:51:52,672 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:51:52,672 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:51:52,672 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:51:52,672 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-23 02:51:52,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-11-23 02:51:52,680 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:51:52,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:52,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 02:51:52,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:52,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:51:52,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:52,849 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 02:51:52,850 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-23 02:51:52,850 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:52,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 502 states and 710 transitions. Complement of second has 18 states. [2024-11-23 02:51:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-11-23 02:51:52,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 44 letters. Loop has 4 letters. [2024-11-23 02:51:52,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:52,893 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:51:52,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:51:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:52,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 02:51:52,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:51:53,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:51:53,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:51:53,054 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 02:51:53,054 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-23 02:51:53,055 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:53,121 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 722 states and 1027 transitions. Complement of second has 22 states. [2024-11-23 02:51:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2024-11-23 02:51:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2024-11-23 02:51:53,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 44 letters. Loop has 4 letters. [2024-11-23 02:51:53,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:53,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 48 letters. Loop has 4 letters. [2024-11-23 02:51:53,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:53,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2024-11-23 02:51:53,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:51:53,123 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1027 transitions. [2024-11-23 02:51:53,136 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-23 02:51:53,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2024-11-23 02:51:53,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 658 states and 955 transitions. [2024-11-23 02:51:53,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2024-11-23 02:51:53,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2024-11-23 02:51:53,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 658 states and 955 transitions. [2024-11-23 02:51:53,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:51:53,146 INFO L218 hiAutomatonCegarLoop]: Abstraction has 658 states and 955 transitions. [2024-11-23 02:51:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states and 955 transitions. [2024-11-23 02:51:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 638. [2024-11-23 02:51:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 409 states have (on average 1.1344743276283618) internal successors, (464), 442 states have internal predecessors, (464), 135 states have call successors, (165), 83 states have call predecessors, (165), 94 states have return successors, (302), 112 states have call predecessors, (302), 128 states have call successors, (302) [2024-11-23 02:51:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 931 transitions. [2024-11-23 02:51:53,160 INFO L240 hiAutomatonCegarLoop]: Abstraction has 638 states and 931 transitions. [2024-11-23 02:51:53,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:51:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 02:51:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-23 02:51:53,160 INFO L87 Difference]: Start difference. First operand 638 states and 931 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 10 states have internal predecessors, (29), 8 states have call successors, (9), 9 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:51:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:51:53,325 INFO L93 Difference]: Finished difference Result 307 states and 360 transitions. [2024-11-23 02:51:53,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 360 transitions. [2024-11-23 02:51:53,327 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:51:53,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 0 states and 0 transitions. [2024-11-23 02:51:53,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-23 02:51:53,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-23 02:51:53,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-23 02:51:53,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:51:53,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:53,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 02:51:53,328 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:51:53,328 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-23 02:51:53,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-23 02:51:53,328 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:51:53,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-23 02:51:53,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:51:53 BoogieIcfgContainer [2024-11-23 02:51:53,334 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-23 02:51:53,334 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:51:53,334 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:51:53,335 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:51:53,335 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:45" (3/4) ... [2024-11-23 02:51:53,336 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-23 02:51:53,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:51:53,338 INFO L158 Benchmark]: Toolchain (without parser) took 8817.46ms. Allocated memory was 184.5MB in the beginning and 245.4MB in the end (delta: 60.8MB). Free memory was 125.6MB in the beginning and 182.2MB in the end (delta: -56.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-11-23 02:51:53,338 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory is still 147.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:51:53,338 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.03ms. Allocated memory is still 184.5MB. Free memory was 125.2MB in the beginning and 113.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-23 02:51:53,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.07ms. Allocated memory is still 184.5MB. Free memory was 113.4MB in the beginning and 112.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:51:53,338 INFO L158 Benchmark]: Boogie Preprocessor took 29.59ms. Allocated memory is still 184.5MB. Free memory was 112.2MB in the beginning and 110.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:51:53,338 INFO L158 Benchmark]: RCFGBuilder took 250.98ms. Allocated memory is still 184.5MB. Free memory was 110.5MB in the beginning and 100.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 02:51:53,338 INFO L158 Benchmark]: BuchiAutomizer took 8296.67ms. Allocated memory was 184.5MB in the beginning and 245.4MB in the end (delta: 60.8MB). Free memory was 100.5MB in the beginning and 182.2MB in the end (delta: -81.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:51:53,339 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 245.4MB. Free memory is still 182.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:51:53,339 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory is still 147.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.03ms. Allocated memory is still 184.5MB. Free memory was 125.2MB in the beginning and 113.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.07ms. Allocated memory is still 184.5MB. Free memory was 113.4MB in the beginning and 112.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.59ms. Allocated memory is still 184.5MB. Free memory was 112.2MB in the beginning and 110.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.98ms. Allocated memory is still 184.5MB. Free memory was 110.5MB in the beginning and 100.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 8296.67ms. Allocated memory was 184.5MB in the beginning and 245.4MB in the end (delta: 60.8MB). Free memory was 100.5MB in the beginning and 182.2MB in the end (delta: -81.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 245.4MB. Free memory is still 182.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.2s and 7 iterations. TraceHistogramMax:10. Analysis of lassos took 4.1s. Construction of modules took 0.7s. Büchi inclusion checks took 3.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 238 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 466 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 442 mSDsluCounter, 569 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1178 IncrementalHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 215 mSDtfsCounter, 1178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp82 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp80 dnf100 smp100 tf112 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-23 02:51:53,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:53,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:53,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-23 02:51:53,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 02:51:54,159 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