./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/Fibonacci02.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/referee/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/referee/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/referee/data -tc /storage/repos/certificate-witnesses-artifact/referee/config/RefereeReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive/Fibonacci02.c ../results/automizer-verification-files/SV-COMP24_unreach-call/Fibonacci02.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:54:13,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:54:13,328 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-11 20:54:13,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:54:13,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:54:13,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:54:13,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:54:13,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:54:13,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:54:13,367 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:54:13,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:54:13,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:54:13,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:54:13,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:54:13,368 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:54:13,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:54:13,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:54:13,369 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:54:13,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:54:13,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:54:13,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:54:13,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:54:13,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:54:13,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:54:13,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:54:13,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:54:13,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:54:13,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:54:13,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:54:13,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:54:13,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:54:13,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:54:13,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:13,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:54:13,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:54:13,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:54:13,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:54:13,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:54:13,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:54:13,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:54:13,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:54:13,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:54:13,378 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/certificate-witnesses-artifact/referee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-11 20:54:13,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:54:13,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:54:13,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:54:13,649 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-11 20:54:13,650 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-11 20:54:13,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/Fibonacci02.yml/witness-2.1.yml [2024-09-11 20:54:13,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:54:13,750 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:54:13,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/Fibonacci02.c [2024-09-11 20:54:15,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:54:15,334 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:54:15,335 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci02.c [2024-09-11 20:54:15,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/66a125974/6191ea04bad24c14bf046844024ba35e/FLAG45bdeefec [2024-09-11 20:54:15,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/66a125974/6191ea04bad24c14bf046844024ba35e [2024-09-11 20:54:15,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:54:15,357 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-11 20:54:15,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:15,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:54:15,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:54:15,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:54:13" (1/2) ... [2024-09-11 20:54:15,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab38554 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:15, skipping insertion in model container [2024-09-11 20:54:15,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:54:13" (1/2) ... [2024-09-11 20:54:15,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33c2ffe4 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:15, skipping insertion in model container [2024-09-11 20:54:15,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:15" (2/2) ... [2024-09-11 20:54:15,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab38554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15, skipping insertion in model container [2024-09-11 20:54:15,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:15" (2/2) ... [2024-09-11 20:54:15,378 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-11 20:54:15,381 INFO L1541 ArrayList]: Location invariant before [L27-L35] (9 <= x) [2024-09-11 20:54:15,381 INFO L1541 ArrayList]: Function contract at [L16]: requires null, ensures ((((((((\result == 1) || (1 != \old(n))) && ((\result == 13) || (7 != \old(n)))) && ((\result == 2) || (3 != \old(n)))) && ((\result == 8) || (6 != \old(n)))) && ((\result == 0) || (0 < \old(n)))) && ((\result == 3) || (4 != \old(n)))) && ((\result == 5) || (5 != \old(n)))) [2024-09-11 20:54:15,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:54:15,601 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2024-09-11 20:54:15,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:15,620 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-11 20:54:15,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2024-09-11 20:54:15,663 WARN L423 MainDispatcher]: Unable to annotate int main() { int x = 9; int result = fibonacci(x); if (result == 34) { return 0; } else { ERROR: {reach_error();abort();} } } with a witness entry [2024-09-11 20:54:15,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:15,679 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:54:15,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15 WrapperNode [2024-09-11 20:54:15,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:15,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:54:15,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:54:15,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:54:15,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,718 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibonacci is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-11 20:54:15,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:54:15,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:54:15,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:54:15,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:54:15,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (1/1) ... [2024-09-11 20:54:15,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:15,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-11 20:54:15,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-11 20:54:15,779 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-11 20:54:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-11 20:54:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:54:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-11 20:54:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-09-11 20:54:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-11 20:54:15,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-11 20:54:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:54:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-11 20:54:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-11 20:54:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:54:15,898 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:54:15,900 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:54:16,057 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-11 20:54:16,057 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:54:16,083 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:54:16,084 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:54:16,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:16 BoogieIcfgContainer [2024-09-11 20:54:16,085 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:54:16,086 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-11 20:54:16,086 INFO L270 PluginConnector]: Initializing Referee... [2024-09-11 20:54:16,087 INFO L274 PluginConnector]: Referee initialized [2024-09-11 20:54:16,087 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 11.09 08:54:13" (1/4) ... [2024-09-11 20:54:16,088 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@55a19202 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,088 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 11.09 08:54:15" (2/4) ... [2024-09-11 20:54:16,088 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@55a19202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,089 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:15" (3/4) ... [2024-09-11 20:54:16,089 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@55a19202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,089 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:16" (4/4) ... [2024-09-11 20:54:16,090 INFO L79 RefereeObserver]: Analyzing ICFG Fibonacci02.c [2024-09-11 20:54:16,094 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-11 20:54:16,094 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-09-11 20:54:16,094 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibonacciErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-11 20:54:16,095 INFO L130 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-11 20:54:16,149 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-11 20:54:16,151 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:16,151 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:16,152 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:16,153 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:16,155 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:16,178 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-11 20:54:16,179 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:16,179 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:16,179 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:16,180 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:16,180 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:16,219 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-11 20:54:16,219 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:16,219 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:16,220 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:16,220 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:16,220 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:16,256 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-11 20:54:16,257 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:16,257 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:16,257 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:16,257 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:16,270 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:16,291 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-11 20:54:16,293 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@55a19202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,293 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-11 20:54:16,296 INFO L158 Benchmark]: Toolchain (without parser) took 937.43ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 54.5MB in the beginning and 109.2MB in the end (delta: -54.6MB). Peak memory consumption was 561.4kB. Max. memory is 16.1GB. [2024-09-11 20:54:16,297 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:16,297 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 125.8MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:16,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.93ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 54.4MB in the beginning and 141.7MB in the end (delta: -87.3MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-09-11 20:54:16,299 INFO L158 Benchmark]: Boogie Preprocessor took 53.76ms. Allocated memory is still 178.3MB. Free memory was 141.7MB in the beginning and 139.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 20:54:16,300 INFO L158 Benchmark]: RCFGBuilder took 349.28ms. Allocated memory is still 178.3MB. Free memory was 139.6MB in the beginning and 124.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-11 20:54:16,301 INFO L158 Benchmark]: Referee took 207.81ms. Allocated memory is still 178.3MB. Free memory was 124.9MB in the beginning and 109.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-11 20:54:16,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - AnnotationCheckResult: Annotation is not a valid proof of correctness. Annotation is not a valid proof of correctness. Annotation is not valid for all loop-free paths from entry of procedure main to check that a call to reach_error is unreachable at line 33. One counterexample starts in and ends in result=0, x=0. Annotation is not valid for all loop-free paths from entry of procedure fibonacci to exit of procedure fibonacci. One counterexample starts in \old(n)=4 and ends in \old(n)=4, \result=0, n=0. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.76ms. Allocated memory is still 125.8MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.93ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 54.4MB in the beginning and 141.7MB in the end (delta: -87.3MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.76ms. Allocated memory is still 178.3MB. Free memory was 141.7MB in the beginning and 139.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.28ms. Allocated memory is still 178.3MB. Free memory was 139.6MB in the beginning and 124.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Referee took 207.81ms. Allocated memory is still 178.3MB. Free memory was 124.9MB in the beginning and 109.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-11 20:54:16,335 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE