./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann04.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/Ackermann04.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd 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/Ackermann04.c ../results/automizer-verification-files/SV-COMP24_unreach-call/Ackermann04.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-ca4ee3d-m [2024-09-20 20:12:38,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 20:12:38,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-20 20:12:38,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 20:12:38,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 20:12:38,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 20:12:38,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 20:12:38,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 20:12:38,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 20:12:38,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 20:12:38,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 20:12:38,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 20:12:38,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 20:12:38,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 20:12:38,541 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 20:12:38,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 20:12:38,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 20:12:38,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 20:12:38,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 20:12:38,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 20:12:38,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 20:12:38,546 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 20:12:38,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 20:12:38,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 20:12:38,547 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 20:12:38,547 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 20:12:38,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 20:12:38,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 20:12:38,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 20:12:38,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 20:12:38,549 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-20 20:12:38,550 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 20:12:38,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 20:12:38,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 20:12:38,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 20:12:38,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 20:12:38,551 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 20:12:38,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 20:12:38,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 20:12:38,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 20:12:38,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 20:12:38,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 20:12:38,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 20:12:38,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 20:12:38,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 20:12:38,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 20:12:38,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 20:12:38,843 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 20:12:38,843 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 20:12:38,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/Ackermann04.c [2024-09-20 20:12:40,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 20:12:40,282 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-09-20 20:12:40,429 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 20:12:40,429 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c [2024-09-20 20:12:40,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/040b1c7ce/ea7ba89a777f4309a4962cd49a35fc95/FLAGdc7cd91a7 [2024-09-20 20:12:40,464 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/040b1c7ce/ea7ba89a777f4309a4962cd49a35fc95 [2024-09-20 20:12:40,466 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 20:12:40,471 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 20:12:40,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/Ackermann04.yml/witness-2.1.yml [2024-09-20 20:12:40,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 20:12:40,535 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-20 20:12:40,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 20:12:40,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 20:12:40,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 20:12:40,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:12:40" (1/2) ... [2024-09-20 20:12:40,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29084fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:12:40, skipping insertion in model container [2024-09-20 20:12:40,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:12:40" (1/2) ... [2024-09-20 20:12:40,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e478a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:12:40, skipping insertion in model container [2024-09-20 20:12:40,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 08:12:40" (2/2) ... [2024-09-20 20:12:40,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29084fa and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 08:12:40, skipping insertion in model container [2024-09-20 20:12:40,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 08:12:40" (2/2) ... [2024-09-20 20:12:40,550 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 20:12:40,550 INFO L1541 ArrayList]: Function contract at [L16]: requires null, ensures (((\old(n) < \result) || (\old(m) != 0)) && ((0 < \old(m)) || (\old(m) == 0))) [2024-09-20 20:12:40,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 20:12:40,713 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/Ackermann04.c[1166,1179] [2024-09-20 20:12:40,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 20:12:40,728 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-20 20:12:40,773 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/Ackermann04.c[1166,1179] [2024-09-20 20:12:40,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 20:12:40,794 INFO L204 MainTranslator]: Completed translation [2024-09-20 20:12:40,795 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 08:12:40 WrapperNode [2024-09-20 20:12:40,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 20:12:40,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 20:12:40,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 20:12:40,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 20:12:40,809 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,810 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,816 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,829 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure ackermann is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-20 20:12:40,829 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,829 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,834 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,836 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,837 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,839 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 20:12:40,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 20:12:40,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 20:12:40,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 20:12:40,847 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 20.09 08:12:40" (1/1) ... [2024-09-20 20:12:40,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 20:12:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-20 20:12:40,883 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) [2024-09-20 20:12:40,885 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 [2024-09-20 20:12:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 20:12:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 20:12:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-20 20:12:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-20 20:12:40,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 20:12:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-20 20:12:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-20 20:12:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-20 20:12:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 20:12:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-20 20:12:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-20 20:12:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 20:12:40,982 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 20:12:40,983 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 20:12:41,113 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 20:12:41,141 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 20:12:41,141 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 20:12:41,141 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:12:41 BoogieIcfgContainer [2024-09-20 20:12:41,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 20:12:41,142 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-20 20:12:41,142 INFO L270 PluginConnector]: Initializing Referee... [2024-09-20 20:12:41,143 INFO L274 PluginConnector]: Referee initialized [2024-09-20 20:12:41,143 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 20.09 08:12:40" (1/4) ... [2024-09-20 20:12:41,144 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@69549dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 20.09 08:12:41, skipping insertion in model container [2024-09-20 20:12:41,144 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 08:12:40" (2/4) ... [2024-09-20 20:12:41,144 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@69549dba and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 20.09 08:12:41, skipping insertion in model container [2024-09-20 20:12:41,144 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 20.09 08:12:40" (3/4) ... [2024-09-20 20:12:41,144 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@69549dba and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 20.09 08:12:41, skipping insertion in model container [2024-09-20 20:12:41,144 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:12:41" (4/4) ... [2024-09-20 20:12:41,147 INFO L79 RefereeObserver]: Analyzing ICFG Ackermann04.c [2024-09-20 20:12:41,151 INFO L113 InvariantChecker]: Found 0 loops. [2024-09-20 20:12:41,151 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-20 20:12:41,151 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC ackermannErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-20 20:12:41,152 INFO L131 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-20 20:12:41,190 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-20 20:12:41,191 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:12:41,193 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:12:41,194 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:12:41,195 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:12:41,197 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:12:41,226 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-20 20:12:41,227 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:12:41,227 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:12:41,227 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:12:41,228 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:12:41,232 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:12:41,281 INFO L314 BlockEncoder]: Initial Icfg 11 locations, 12 edges [2024-09-20 20:12:41,282 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:12:41,282 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:12:41,282 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:12:41,282 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:12:41,282 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:12:41,315 INFO L101 BaseMinimizeStates]: Removed 22 edges and 9 locations by large block encoding [2024-09-20 20:12:41,315 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:12:41,315 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:12:41,316 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:12:41,316 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:12:41,324 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:12:41,332 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location ackermannErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-20 20:12:41,340 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-20 20:12:41,341 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@69549dba and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 20.09 08:12:41, skipping insertion in model container [2024-09-20 20:12:41,341 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-20 20:12:41,343 INFO L158 Benchmark]: Toolchain (without parser) took 806.74ms. Allocated memory is still 178.3MB. Free memory was 149.7MB in the beginning and 107.0MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-09-20 20:12:41,344 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 20:12:41,345 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 20:12:41,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.08ms. Allocated memory is still 178.3MB. Free memory was 148.9MB in the beginning and 135.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 20:12:41,346 INFO L158 Benchmark]: Boogie Preprocessor took 47.32ms. Allocated memory is still 178.3MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 20:12:41,347 INFO L158 Benchmark]: RCFGBuilder took 297.63ms. Allocated memory is still 178.3MB. Free memory was 133.6MB in the beginning and 121.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 20:12:41,347 INFO L158 Benchmark]: Referee took 198.99ms. Allocated memory is still 178.3MB. Free memory was 121.1MB in the beginning and 107.0MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 20:12:41,349 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 45. One counterexample starts in and ends in m=2, n=2, result=0. Annotation is valid for all loop-free paths from entry of procedure ackermann to exit of procedure ackermann. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 178.3MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.08ms. Allocated memory is still 178.3MB. Free memory was 148.9MB in the beginning and 135.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.32ms. Allocated memory is still 178.3MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.63ms. Allocated memory is still 178.3MB. Free memory was 133.6MB in the beginning and 121.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 198.99ms. Allocated memory is still 178.3MB. Free memory was 121.1MB in the beginning and 107.0MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-09-20 20:12:41,386 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