./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_4-1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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-simple/fibo_2calls_4-1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_4-1.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-tmp.dk.referee-eval-de32597-m [2024-09-17 19:42:05,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:42:05,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-17 19:42:05,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:42:05,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:42:05,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:42:05,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:42:05,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:42:05,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:42:05,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:42:05,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:42:05,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:42:05,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:42:05,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:42:05,694 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:42:05,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:42:05,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:42:05,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:42:05,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:42:05,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:42:05,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:42:05,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:42:05,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:42:05,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:42:05,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:42:05,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:42:05,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:42:05,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:42:05,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:42:05,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:42:05,700 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-17 19:42:05,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:42:05,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:42:05,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:42:05,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:42:05,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:42:05,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:42:05,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:42:05,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:42:05,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:42:05,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:42:05,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:42:05,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:42:05,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:42:05,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:42:05,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:42:05,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:42:05,935 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:42:05,936 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:42:05,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2024-09-17 19:42:07,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:42:07,288 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:42:07,290 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2024-09-17 19:42:07,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/e7b121976/a2b10eb4607a4e4c9dd4af756a3b36eb/FLAGb7ceeef3b [2024-09-17 19:42:07,690 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/e7b121976/a2b10eb4607a4e4c9dd4af756a3b36eb [2024-09-17 19:42:07,692 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:42:07,693 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:42:07,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_4-1.yml/witness-2.1.yml [2024-09-17 19:42:07,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:42:07,785 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-17 19:42:07,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:42:07,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:42:07,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:42:07,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:42:07" (1/2) ... [2024-09-17 19:42:07,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38655e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:42:07, skipping insertion in model container [2024-09-17 19:42:07,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:42:07" (1/2) ... [2024-09-17 19:42:07,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39b0d9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:42:07, skipping insertion in model container [2024-09-17 19:42:07,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:42:07" (2/2) ... [2024-09-17 19:42:07,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38655e74 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:07, skipping insertion in model container [2024-09-17 19:42:07,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:42:07" (2/2) ... [2024-09-17 19:42:07,807 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:42:07,807 INFO L1541 ArrayList]: Function contract at [L9]: requires null, ensures (((((\result == 1) || (\old(n) < 1)) || (2 < \old(n))) && (((\result == 0) || (1 < \old(n))) || (\old(n) == 1))) && ((((3 == \old(n)) || (4 < \old(n))) || (\old(n) < 2)) || ((3 == \result) && (\old(n) == 4)))) [2024-09-17 19:42:07,807 INFO L1541 ArrayList]: Function contract at [L19]: requires null, ensures (((((\result == 1) && (\old(n) == 1)) || (\result == 0)) || (1 < \old(n))) && (((((\result == 1) && (\old(n) == 1)) || (\old(n) < 1)) || (3 < \old(n))) || ((\result == 1) && (2 == \old(n))))) [2024-09-17 19:42:07,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:42:07,944 WARN L248 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-simple/fibo_2calls_4-1.c[946,959] [2024-09-17 19:42:07,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:42:07,958 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-17 19:42:08,002 WARN L248 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-simple/fibo_2calls_4-1.c[946,959] [2024-09-17 19:42:08,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:42:08,015 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:42:08,016 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08 WrapperNode [2024-09-17 19:42:08,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:42:08,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:42:08,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:42:08,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:42:08,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,048 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibo1 is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-17 19:42:08,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,059 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:42:08,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:42:08,061 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:42:08,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:42:08,062 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (1/1) ... [2024-09-17 19:42:08,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:42:08,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-17 19:42:08,086 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) [2024-09-17 19:42:08,087 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 [2024-09-17 19:42:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:42:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:42:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-17 19:42:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-17 19:42:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-17 19:42:08,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:42:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-17 19:42:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-17 19:42:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-17 19:42:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-17 19:42:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:42:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-17 19:42:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-17 19:42:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:42:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:42:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-17 19:42:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:42:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-17 19:42:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-17 19:42:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-17 19:42:08,177 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:42:08,179 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:42:08,310 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:42:08,332 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:42:08,333 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:42:08,333 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:42:08 BoogieIcfgContainer [2024-09-17 19:42:08,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:42:08,334 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-17 19:42:08,334 INFO L270 PluginConnector]: Initializing Referee... [2024-09-17 19:42:08,334 INFO L274 PluginConnector]: Referee initialized [2024-09-17 19:42:08,334 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 17.09 07:42:07" (1/4) ... [2024-09-17 19:42:08,335 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5524c707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 17.09 07:42:08, skipping insertion in model container [2024-09-17 19:42:08,335 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:42:07" (2/4) ... [2024-09-17 19:42:08,335 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5524c707 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 17.09 07:42:08, skipping insertion in model container [2024-09-17 19:42:08,335 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:42:08" (3/4) ... [2024-09-17 19:42:08,335 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5524c707 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 17.09 07:42:08, skipping insertion in model container [2024-09-17 19:42:08,336 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:42:08" (4/4) ... [2024-09-17 19:42:08,337 INFO L79 RefereeObserver]: Analyzing ICFG fibo_2calls_4-1.c [2024-09-17 19:42:08,339 INFO L113 InvariantChecker]: Found 0 loops. [2024-09-17 19:42:08,340 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-09-17 19:42:08,340 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibo2Err0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-17 19:42:08,340 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibo1Err0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-17 19:42:08,341 INFO L131 InvariantChecker]: Will check 3 loop-free subgraphs from procedure entry to error location [2024-09-17 19:42:08,379 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-17 19:42:08,379 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-17 19:42:08,380 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-17 19:42:08,380 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-17 19:42:08,382 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-17 19:42:08,383 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-17 19:42:08,403 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-17 19:42:08,404 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-17 19:42:08,404 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-17 19:42:08,405 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-17 19:42:08,405 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-17 19:42:08,405 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-17 19:42:08,419 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location mainErr0ASSERT_VIOLATIONERROR_FUNCTION is inductive. [2024-09-17 19:42:08,432 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-17 19:42:08,432 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-17 19:42:08,432 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-17 19:42:08,432 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-17 19:42:08,433 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-17 19:42:08,433 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-17 19:42:08,457 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-17 19:42:08,458 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-17 19:42:08,458 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-17 19:42:08,458 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-17 19:42:08,458 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-17 19:42:08,466 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-17 19:42:08,475 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location fibo2Err0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-17 19:42:08,490 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-17 19:42:08,491 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-17 19:42:08,491 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-17 19:42:08,491 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-17 19:42:08,491 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-17 19:42:08,491 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-17 19:42:08,513 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-17 19:42:08,514 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-17 19:42:08,515 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-17 19:42:08,515 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-17 19:42:08,515 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-17 19:42:08,521 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-17 19:42:08,539 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-09-17 19:42:08,539 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret5 [2024-09-17 19:42:08,542 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-09-17 19:42:08,542 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret5 [2024-09-17 19:42:08,544 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-17 19:42:08,544 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5524c707 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 17.09 07:42:08, skipping insertion in model container [2024-09-17 19:42:08,544 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-17 19:42:08,547 INFO L158 Benchmark]: Toolchain (without parser) took 760.62ms. Allocated memory is still 153.1MB. Free memory was 123.2MB in the beginning and 71.1MB in the end (delta: 52.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-09-17 19:42:08,548 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:42:08,548 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 153.1MB. Free memory was 82.2MB in the beginning and 82.2MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:42:08,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.68ms. Allocated memory is still 153.1MB. Free memory was 123.2MB in the beginning and 110.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:42:08,549 INFO L158 Benchmark]: Boogie Preprocessor took 43.26ms. Allocated memory is still 153.1MB. Free memory was 110.0MB in the beginning and 107.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:42:08,550 INFO L158 Benchmark]: RCFGBuilder took 271.96ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 94.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:42:08,550 INFO L158 Benchmark]: Referee took 211.32ms. Allocated memory is still 153.1MB. Free memory was 94.2MB in the beginning and 71.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-17 19:42:08,552 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. [2024-09-17 19:42:08,557 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-09-17 19:42:08,557 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret5 [2024-09-17 19:42:08,557 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-09-17 19:42:08,557 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret5 [2024-09-17 19:42:08,558 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-09-17 19:42:08,558 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret5 [2024-09-17 19:42:08,558 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret4 [2024-09-17 19:42:08,559 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret5 Annotation is not a valid proof of correctness. Annotation is not valid for all loop-free paths from entry of procedure fibo1 to exit of procedure fibo1. One counterexample starts in \old(n)=2 and ends in \old(n)=2, \result=1, n=2. Annotation is valid for all loop-free paths from entry of procedure fibo2 to exit of procedure fibo2. Annotation is valid for all loop-free paths from entry of procedure main to check that a call to reach_error is unreachable at line 41. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 153.1MB. Free memory was 82.2MB in the beginning and 82.2MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.68ms. Allocated memory is still 153.1MB. Free memory was 123.2MB in the beginning and 110.0MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.26ms. Allocated memory is still 153.1MB. Free memory was 110.0MB in the beginning and 107.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.96ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 94.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 211.32ms. Allocated memory is still 153.1MB. Free memory was 94.2MB in the beginning and 71.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret5 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret5 RESULT: Ultimate proved your program to be incorrect! [2024-09-17 19:42:08,584 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