./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-2.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:59:59,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:59:59,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-12 00:59:59,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:59:59,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:59:59,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:59:59,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:59:59,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:59:59,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:59:59,531 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:59:59,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:59:59,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:59:59,533 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:59:59,533 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:59:59,533 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:59:59,536 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:59:59,536 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:59:59,536 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:59:59,536 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:59:59,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:59:59,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:59:59,537 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:59:59,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:59:59,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:59:59,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:59:59,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:59:59,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:59:59,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:59:59,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:59:59,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:59:59,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:59:59,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:59:59,540 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:59:59,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:59:59,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:59:59,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:59:59,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:59:59,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:59:59,542 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:59:59,542 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 [2024-10-12 00:59:59,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:59:59,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:59:59,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:59:59,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:59:59,757 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:59:59,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-2.c [2024-10-12 01:00:00,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 01:00:01,143 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 01:00:01,144 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-2.c [2024-10-12 01:00:01,151 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d133ae2c/341bf4c7517d44b3a208f43b3543636c/FLAGd486d8cbc [2024-10-12 01:00:01,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d133ae2c/341bf4c7517d44b3a208f43b3543636c [2024-10-12 01:00:01,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 01:00:01,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 01:00:01,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 01:00:01,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 01:00:01,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 01:00:01,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31714708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01, skipping insertion in model container [2024-10-12 01:00:01,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 01:00:01,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 01:00:01,320 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 01:00:01,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 01:00:01,342 INFO L204 MainTranslator]: Completed translation [2024-10-12 01:00:01,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01 WrapperNode [2024-10-12 01:00:01,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 01:00:01,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 01:00:01,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 01:00:01,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 01:00:01,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,363 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-10-12 01:00:01,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 01:00:01,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 01:00:01,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 01:00:01,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 01:00:01,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,379 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 01:00:01,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 01:00:01,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 01:00:01,388 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 01:00:01,388 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 01:00:01,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (1/1) ... [2024-10-12 01:00:01,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:01,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:01,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 01:00:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 01:00:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 01:00:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 01:00:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 01:00:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-12 01:00:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-12 01:00:01,511 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 01:00:01,512 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 01:00:01,603 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 01:00:01,604 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 01:00:01,618 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 01:00:01,618 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 01:00:01,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:00:01 BoogieIcfgContainer [2024-10-12 01:00:01,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 01:00:01,621 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 01:00:01,621 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 01:00:01,626 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 01:00:01,626 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 01:00:01,627 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 01:00:01" (1/3) ... [2024-10-12 01:00:01,628 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@198b6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 01:00:01, skipping insertion in model container [2024-10-12 01:00:01,628 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 01:00:01,628 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:01" (2/3) ... [2024-10-12 01:00:01,629 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@198b6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 01:00:01, skipping insertion in model container [2024-10-12 01:00:01,629 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 01:00:01,629 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:00:01" (3/3) ... [2024-10-12 01:00:01,631 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_5-2.c [2024-10-12 01:00:01,682 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 01:00:01,683 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 01:00:01,683 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 01:00:01,683 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 01:00:01,684 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 01:00:01,684 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 01:00:01,684 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 01:00:01,684 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 01:00:01,689 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 01:00:01,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:01,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:01,704 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:01,710 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 01:00:01,711 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 01:00:01,711 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 01:00:01,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 01:00:01,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:01,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:01,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:01,715 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 01:00:01,715 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 01:00:01,721 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-10-12 01:00:01,721 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-10-12 01:00:01,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-10-12 01:00:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978851151] [2024-10-12 01:00:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:01,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:01,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:01,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-10-12 01:00:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:01,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197012234] [2024-10-12 01:00:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:01,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:01,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:01,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-10-12 01:00:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:01,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060237054] [2024-10-12 01:00:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:01,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:01,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:01,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:02,043 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:02,044 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:02,044 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:02,044 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:02,044 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:02,044 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,044 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:02,044 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:02,044 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration1_Loop [2024-10-12 01:00:02,044 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:02,044 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:02,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,073 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,076 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,078 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,089 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,158 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:02,159 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 01:00:02,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:02,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:02,180 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:02,180 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:02,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 01:00:02,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:02,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:02,207 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:02,207 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:02,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-12 01:00:02,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 01:00:02,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:02,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:02,233 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:02,234 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:02,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:02,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 01:00:02,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:02,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:02,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 01:00:02,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 01:00:02,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:02,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:02,336 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:02,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-12 01:00:02,340 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:02,341 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:02,341 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:02,341 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:02,341 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:02,341 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,341 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:02,341 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:02,341 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration1_Loop [2024-10-12 01:00:02,341 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:02,341 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:02,343 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,345 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,365 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:02,418 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:02,426 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:02,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 01:00:02,430 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:02,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:02,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:02,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:02,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:02,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:02,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:02,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:02,445 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:02,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-12 01:00:02,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 01:00:02,460 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:02,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:02,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:02,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:02,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:02,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:02,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:02,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:02,474 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:02,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:02,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 01:00:02,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:02,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:02,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:02,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:02,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:02,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:02,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:02,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:02,502 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:02,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-12 01:00:02,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 01:00:02,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:02,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:02,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:02,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:02,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:02,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:02,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:02,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:02,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:02,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 01:00:02,536 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 01:00:02,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:02,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:02,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 01:00:02,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:02,542 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:02,542 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:02,542 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-10-12 01:00:02,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-12 01:00:02,557 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:02,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:02,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 01:00:02,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:02,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 01:00:02,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:02,692 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-12 01:00:02,694 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 01:00:02,778 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 54 transitions. Complement of second has 16 states. [2024-10-12 01:00:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 01:00:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-10-12 01:00:02,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-12 01:00:02,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:02,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-10-12 01:00:02,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:02,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-12 01:00:02,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:02,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-10-12 01:00:02,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:02,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-10-12 01:00:02,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-10-12 01:00:02,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-12 01:00:02,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-10-12 01:00:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:02,803 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-10-12 01:00:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-10-12 01:00:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-10-12 01:00:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 01:00:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-10-12 01:00:02,824 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 01:00:02,824 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 01:00:02,824 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 01:00:02,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-10-12 01:00:02,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:02,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:02,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:02,826 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:02,826 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:02,826 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-10-12 01:00:02,826 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-10-12 01:00:02,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-10-12 01:00:02,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:02,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172901839] [2024-10-12 01:00:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:02,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:02,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 01:00:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 01:00:02,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:02,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172901839] [2024-10-12 01:00:02,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172901839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 01:00:02,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 01:00:02,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 01:00:02,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900099344] [2024-10-12 01:00:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 01:00:02,969 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:02,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-10-12 01:00:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:02,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384081183] [2024-10-12 01:00:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 01:00:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 01:00:03,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384081183] [2024-10-12 01:00:03,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384081183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 01:00:03,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 01:00:03,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 01:00:03,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690072813] [2024-10-12 01:00:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 01:00:03,062 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 01:00:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 01:00:03,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 01:00:03,065 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 01:00:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:03,131 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-10-12 01:00:03,131 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-10-12 01:00:03,132 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:03,133 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-10-12 01:00:03,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-10-12 01:00:03,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-10-12 01:00:03,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-10-12 01:00:03,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:03,133 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 01:00:03,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-10-12 01:00:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-12 01:00:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 01:00:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-10-12 01:00:03,136 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 01:00:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 01:00:03,137 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 01:00:03,137 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 01:00:03,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-10-12 01:00:03,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:03,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:03,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:03,139 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:03,139 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:03,139 INFO L745 eck$LassoCheckResult]: Stem: 205#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 199#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 202#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 208#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 195#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 211#fiboEXIT >#35#return; 192#L13-1 [2024-10-12 01:00:03,139 INFO L747 eck$LassoCheckResult]: Loop: 192#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume !(1 == ~n); 193#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume 1 == ~n;#res := 1; 209#fiboFINAL assume true; 210#fiboEXIT >#35#return; 192#L13-1 [2024-10-12 01:00:03,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-10-12 01:00:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171842958] [2024-10-12 01:00:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 01:00:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:03,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:03,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171842958] [2024-10-12 01:00:03,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171842958] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:03,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100860448] [2024-10-12 01:00:03,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:03,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:03,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 01:00:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 01:00:03,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:03,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:03,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100860448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:03,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-12 01:00:03,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226747213] [2024-10-12 01:00:03,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:03,387 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:03,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-10-12 01:00:03,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:03,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960000991] [2024-10-12 01:00:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:03,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:03,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:03,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:03,483 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:03,483 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:03,483 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:03,483 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:03,483 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:03,483 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,483 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:03,483 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:03,483 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration3_Loop [2024-10-12 01:00:03,483 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:03,483 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:03,484 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,488 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,490 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,494 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,524 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:03,524 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,525 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 01:00:03,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:03,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:03,539 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:03,539 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:03,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-12 01:00:03,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,551 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 01:00:03,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:03,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:03,564 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:03,564 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:03,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,576 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 01:00:03,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:03,577 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:03,589 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:03,589 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:03,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,601 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 01:00:03,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:03,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:03,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 01:00:03,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:03,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:03,647 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:03,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,658 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:03,658 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:03,658 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:03,658 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:03,658 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:03,658 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,658 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:03,658 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:03,658 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration3_Loop [2024-10-12 01:00:03,659 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:03,659 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:03,659 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:03,704 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:03,704 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:03,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,705 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 01:00:03,707 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:03,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:03,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:03,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:03,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:03,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:03,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:03,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:03,719 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:03,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,731 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 01:00:03,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:03,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:03,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:03,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:03,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:03,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:03,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:03,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:03,745 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:03,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-12 01:00:03,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,756 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 01:00:03,758 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:03,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:03,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:03,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:03,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:03,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:03,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:03,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:03,773 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:03,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-12 01:00:03,787 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:03,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:03,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:03,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:03,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:03,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:03,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:03,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:03,799 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:03,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,810 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 01:00:03,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:03,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:03,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:03,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:03,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:03,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:03,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:03,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:03,824 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:03,826 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 01:00:03,826 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 01:00:03,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:03,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:03,828 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:03,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 01:00:03,829 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:03,829 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:03,829 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:03,829 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-10-12 01:00:03,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:03,841 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:03,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 01:00:03,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:03,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 01:00:03,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:04,046 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-12 01:00:04,046 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 01:00:04,217 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-10-12 01:00:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 01:00:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-10-12 01:00:04,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-10-12 01:00:04,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:04,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-10-12 01:00:04,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:04,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-10-12 01:00:04,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:04,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-10-12 01:00:04,225 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 01:00:04,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-10-12 01:00:04,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-10-12 01:00:04,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-10-12 01:00:04,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-10-12 01:00:04,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:04,230 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-10-12 01:00:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-10-12 01:00:04,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-10-12 01:00:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-10-12 01:00:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-10-12 01:00:04,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-10-12 01:00:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:04,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 01:00:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 01:00:04,239 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 01:00:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:04,350 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-10-12 01:00:04,350 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-10-12 01:00:04,353 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 01:00:04,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-10-12 01:00:04,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-10-12 01:00:04,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-10-12 01:00:04,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-10-12 01:00:04,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:04,359 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-12 01:00:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-10-12 01:00:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-10-12 01:00:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-10-12 01:00:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-10-12 01:00:04,369 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-10-12 01:00:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 01:00:04,370 INFO L425 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-10-12 01:00:04,370 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 01:00:04,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-10-12 01:00:04,371 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 01:00:04,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:04,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:04,374 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:04,374 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-10-12 01:00:04,374 INFO L745 eck$LassoCheckResult]: Stem: 806#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 792#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 793#$Ultimate##0 ~n := #in~n; 809#L8 assume !(~n < 1); 810#L10 assume !(1 == ~n); 780#L13 call #t~ret4 := fibo(~n - 1);< 779#$Ultimate##0 ~n := #in~n; 781#L8 assume !(~n < 1); 816#L10 assume !(1 == ~n); 790#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 839#L8 assume !(~n < 1); 837#L10 assume 1 == ~n;#res := 1; 835#fiboFINAL assume true; 834#fiboEXIT >#35#return; 817#L13-1 call #t~ret5 := fibo(~n - 2);< 833#$Ultimate##0 ~n := #in~n; 879#L8 assume ~n < 1;#res := 0; 878#fiboFINAL assume true; 877#fiboEXIT >#37#return; 875#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 872#fiboFINAL assume true; 864#fiboEXIT >#35#return; 813#L13-1 [2024-10-12 01:00:04,374 INFO L747 eck$LassoCheckResult]: Loop: 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#35#return; 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#37#return; 862#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 871#fiboFINAL assume true; 865#fiboEXIT >#35#return; 813#L13-1 [2024-10-12 01:00:04,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:04,374 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-10-12 01:00:04,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:04,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182216607] [2024-10-12 01:00:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:04,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:04,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:04,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:04,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1138642743, now seen corresponding path program 1 times [2024-10-12 01:00:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625123859] [2024-10-12 01:00:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 01:00:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-12 01:00:04,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 01:00:04,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:04,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625123859] [2024-10-12 01:00:04,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625123859] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:04,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650576739] [2024-10-12 01:00:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:04,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:04,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:04,522 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:04,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 01:00:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 01:00:04,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 01:00:04,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 01:00:04,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650576739] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:04,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:04,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-12 01:00:04,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665276599] [2024-10-12 01:00:04,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:04,699 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 01:00:04,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:04,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 01:00:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 01:00:04,699 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:04,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:04,773 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-10-12 01:00:04,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 76 transitions. [2024-10-12 01:00:04,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:04,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 54 states and 70 transitions. [2024-10-12 01:00:04,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2024-10-12 01:00:04,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2024-10-12 01:00:04,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 70 transitions. [2024-10-12 01:00:04,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:04,776 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 01:00:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 70 transitions. [2024-10-12 01:00:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-12 01:00:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-10-12 01:00:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-10-12 01:00:04,779 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 01:00:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 01:00:04,780 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 01:00:04,780 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 01:00:04,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 70 transitions. [2024-10-12 01:00:04,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:04,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:04,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:04,783 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:04,783 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-12 01:00:04,783 INFO L745 eck$LassoCheckResult]: Stem: 1144#$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); 1145#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 := 5; 1138#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1139#$Ultimate##0 ~n := #in~n; 1154#L8 assume !(~n < 1); 1153#L10 assume !(1 == ~n); 1126#L13 call #t~ret4 := fibo(~n - 1);< 1125#$Ultimate##0 ~n := #in~n; 1127#L8 assume !(~n < 1); 1147#L10 assume !(1 == ~n); 1131#L13 call #t~ret4 := fibo(~n - 1);< 1132#$Ultimate##0 ~n := #in~n; 1152#L8 assume !(~n < 1); 1169#L10 assume !(1 == ~n); 1142#L13 call #t~ret4 := fibo(~n - 1);< 1132#$Ultimate##0 ~n := #in~n; 1152#L8 assume !(~n < 1); 1169#L10 assume !(1 == ~n); 1142#L13 call #t~ret4 := fibo(~n - 1);< 1132#$Ultimate##0 ~n := #in~n; 1151#L8 assume !(~n < 1); 1148#L10 assume 1 == ~n;#res := 1; 1149#fiboFINAL assume true; 1141#fiboEXIT >#35#return; 1143#L13-1 call #t~ret5 := fibo(~n - 2);< 1168#$Ultimate##0 ~n := #in~n; 1175#L8 assume ~n < 1;#res := 0; 1173#fiboFINAL assume true; 1167#fiboEXIT >#37#return; 1165#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1164#fiboFINAL assume true; 1161#fiboEXIT >#35#return; 1134#L13-1 [2024-10-12 01:00:04,783 INFO L747 eck$LassoCheckResult]: Loop: 1134#L13-1 call #t~ret5 := fibo(~n - 2);< 1130#$Ultimate##0 ~n := #in~n; 1172#L8 assume !(~n < 1); 1170#L10 assume !(1 == ~n); 1136#L13 call #t~ret4 := fibo(~n - 1);< 1130#$Ultimate##0 ~n := #in~n; 1172#L8 assume !(~n < 1); 1170#L10 assume !(1 == ~n); 1136#L13 call #t~ret4 := fibo(~n - 1);< 1130#$Ultimate##0 ~n := #in~n; 1172#L8 assume !(~n < 1); 1170#L10 assume 1 == ~n;#res := 1; 1171#fiboFINAL assume true; 1166#fiboEXIT >#35#return; 1123#L13-1 call #t~ret5 := fibo(~n - 2);< 1122#$Ultimate##0 ~n := #in~n; 1124#L8 assume ~n < 1;#res := 0; 1146#fiboFINAL assume true; 1174#fiboEXIT >#37#return; 1133#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1137#fiboFINAL assume true; 1140#fiboEXIT >#35#return; 1134#L13-1 [2024-10-12 01:00:04,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 2 times [2024-10-12 01:00:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:04,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133363267] [2024-10-12 01:00:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:04,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:04,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:04,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:04,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2000232554, now seen corresponding path program 1 times [2024-10-12 01:00:04,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:04,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148922574] [2024-10-12 01:00:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:04,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:04,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:04,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:04,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -443608101, now seen corresponding path program 3 times [2024-10-12 01:00:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:04,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850826767] [2024-10-12 01:00:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 01:00:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 01:00:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 34 proven. 64 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-12 01:00:04,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:04,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850826767] [2024-10-12 01:00:04,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850826767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:04,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530536527] [2024-10-12 01:00:04,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 01:00:04,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:04,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:04,950 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:04,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 01:00:04,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-12 01:00:04,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 01:00:04,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:04,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 63 proven. 69 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-12 01:00:05,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 63 proven. 70 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-12 01:00:05,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530536527] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:05,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:05,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 22 [2024-10-12 01:00:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126693447] [2024-10-12 01:00:05,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:05,531 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:05,531 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:05,531 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:05,532 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:05,532 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:05,532 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:05,532 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:05,532 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:05,532 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration5_Loop [2024-10-12 01:00:05,532 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:05,532 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:05,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:05,542 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:05,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:05,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:05,589 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:05,590 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:05,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:05,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:05,593 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:05,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-12 01:00:05,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:05,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:05,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:05,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:05,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:05,626 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:05,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-12 01:00:05,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:05,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:06,078 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:06,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:06,083 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:06,083 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:06,084 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:06,084 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:06,084 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:06,084 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,084 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:06,084 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:06,084 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_5-2.c_Iteration5_Loop [2024-10-12 01:00:06,084 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:06,084 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:06,085 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,096 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:06,137 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:06,137 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:06,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,140 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-12 01:00:06,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:06,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:06,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:06,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:06,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:06,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:06,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:06,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:06,155 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:06,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:06,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,166 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 01:00:06,168 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:06,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:06,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:06,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:06,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:06,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:06,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:06,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:06,179 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:06,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-12 01:00:06,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,191 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-12 01:00:06,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:06,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:06,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:06,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:06,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:06,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:06,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:06,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:06,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:06,213 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 01:00:06,213 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 01:00:06,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:06,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:06,215 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:06,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-12 01:00:06,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:06,216 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:06,216 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:06,216 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-10-12 01:00:06,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-10-12 01:00:06,227 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:06,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:06,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:06,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:06,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 01:00:06,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 01:00:06,585 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:06,586 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:06,672 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 61 states and 77 transitions. Complement of second has 11 states. [2024-10-12 01:00:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-12 01:00:06,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 22 letters. [2024-10-12 01:00:06,674 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:06,674 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:06,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:06,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:06,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:06,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-10-12 01:00:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:06,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 01:00:06,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 01:00:07,067 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:07,067 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:07,144 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 61 states and 77 transitions. Complement of second has 11 states. [2024-10-12 01:00:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-12 01:00:07,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 22 letters. [2024-10-12 01:00:07,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:07,145 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:07,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:07,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:07,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:07,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 01:00:07,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 01:00:07,460 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:07,461 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:07,691 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 408 states and 526 transitions. Complement of second has 132 states. [2024-10-12 01:00:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 45 transitions. [2024-10-12 01:00:07,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 32 letters. Loop has 22 letters. [2024-10-12 01:00:07,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:07,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 54 letters. Loop has 22 letters. [2024-10-12 01:00:07,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:07,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 32 letters. Loop has 44 letters. [2024-10-12 01:00:07,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:07,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 526 transitions. [2024-10-12 01:00:07,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 01:00:07,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 259 states and 359 transitions. [2024-10-12 01:00:07,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2024-10-12 01:00:07,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2024-10-12 01:00:07,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 259 states and 359 transitions. [2024-10-12 01:00:07,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:07,723 INFO L218 hiAutomatonCegarLoop]: Abstraction has 259 states and 359 transitions. [2024-10-12 01:00:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states and 359 transitions. [2024-10-12 01:00:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 187. [2024-10-12 01:00:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 122 states have internal predecessors, (131), 43 states have call successors, (48), 25 states have call predecessors, (48), 29 states have return successors, (67), 39 states have call predecessors, (67), 39 states have call successors, (67) [2024-10-12 01:00:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 246 transitions. [2024-10-12 01:00:07,746 INFO L240 hiAutomatonCegarLoop]: Abstraction has 187 states and 246 transitions. [2024-10-12 01:00:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 01:00:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-10-12 01:00:07,747 INFO L87 Difference]: Start difference. First operand 187 states and 246 transitions. Second operand has 22 states, 19 states have (on average 2.263157894736842) internal successors, (43), 16 states have internal predecessors, (43), 13 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 5 states have call predecessors, (10), 9 states have call successors, (10) [2024-10-12 01:00:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:08,054 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2024-10-12 01:00:08,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 141 transitions. [2024-10-12 01:00:08,055 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:08,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 0 states and 0 transitions. [2024-10-12 01:00:08,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 01:00:08,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 01:00:08,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 01:00:08,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 01:00:08,055 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,055 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 01:00:08,056 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:08,057 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-12 01:00:08,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 01:00:08,057 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:08,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 01:00:08,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 01:00:08 BoogieIcfgContainer [2024-10-12 01:00:08,063 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 01:00:08,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 01:00:08,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 01:00:08,064 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 01:00:08,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:00:01" (3/4) ... [2024-10-12 01:00:08,065 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 01:00:08,066 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 01:00:08,067 INFO L158 Benchmark]: Toolchain (without parser) took 6901.81ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 94.4MB in the beginning and 52.7MB in the end (delta: 41.7MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,067 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 80.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 01:00:08,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.03ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 82.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.33ms. Allocated memory is still 163.6MB. Free memory was 82.7MB in the beginning and 81.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,068 INFO L158 Benchmark]: Boogie Preprocessor took 22.88ms. Allocated memory is still 163.6MB. Free memory was 81.1MB in the beginning and 79.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,068 INFO L158 Benchmark]: RCFGBuilder took 233.02ms. Allocated memory is still 163.6MB. Free memory was 79.7MB in the beginning and 69.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,068 INFO L158 Benchmark]: BuchiAutomizer took 6441.91ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 69.2MB in the beginning and 53.8MB in the end (delta: 15.5MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,068 INFO L158 Benchmark]: Witness Printer took 2.84ms. Allocated memory is still 197.1MB. Free memory was 53.8MB in the beginning and 52.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:08,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 80.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.03ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 82.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.33ms. Allocated memory is still 163.6MB. Free memory was 82.7MB in the beginning and 81.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.88ms. Allocated memory is still 163.6MB. Free memory was 81.1MB in the beginning and 79.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 233.02ms. Allocated memory is still 163.6MB. Free memory was 79.7MB in the beginning and 69.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 6441.91ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 69.2MB in the beginning and 53.8MB in the end (delta: 15.5MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. * Witness Printer took 2.84ms. Allocated memory is still 197.1MB. Free memory was 53.8MB in the beginning and 52.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 7 terminating modules (4 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. 4 modules have a trivial ranking function, the largest among these consists of 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.3s and 6 iterations. TraceHistogramMax:6. Analysis of lassos took 3.5s. Construction of modules took 0.4s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 94 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 381 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 151 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 766 IncrementalHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 151 mSolverCounterUnsat, 128 mSDtfsCounter, 766 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI1 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq180 hnf92 smp80 dnf100 smp100 tf111 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 01:00:08,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-12 01:00:08,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:08,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:08,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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