./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/Ackermann03.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/Ackermann03.c ../results/automizer-verification-files/SV-COMP24_unreach-call/Ackermann03.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 20:54:08,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:54:08,761 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-11 20:54:08,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:54:08,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:54:08,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:54:08,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:54:08,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:54:08,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:54:08,785 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:54:08,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:54:08,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:54:08,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:54:08,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:54:08,786 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:54:08,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:54:08,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:54:08,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:54:08,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:54:08,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:54:08,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:54:08,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:54:08,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:54:08,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:54:08,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:54:08,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:54:08,790 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:54:08,790 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:54:08,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:54:08,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:54:08,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:54:08,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:54:08,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:08,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:54:08,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:54:08,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:54:08,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:54:08,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:54:08,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:54:08,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:54:08,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:54:08,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:54:08,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-11 20:54:09,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:54:09,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:54:09,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:54:09,036 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-11 20:54:09,047 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-11 20:54:09,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/Ackermann03.yml/witness-2.1.yml [2024-09-11 20:54:09,133 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:54:09,134 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:54:09,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-11 20:54:10,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:54:10,627 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:54:10,627 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-11 20:54:10,634 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/7065c0e70/b00f9d430d1746da9dadec4c5e730827/FLAGba74693dd [2024-09-11 20:54:10,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/7065c0e70/b00f9d430d1746da9dadec4c5e730827 [2024-09-11 20:54:10,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:54:10,652 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-11 20:54:10,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:10,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:54:10,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:54:10,659 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 08:54:09" (1/2) ... [2024-09-11 20:54:10,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2c2feb and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:10, skipping insertion in model container [2024-09-11 20:54:10,662 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 08:54:09" (1/2) ... [2024-09-11 20:54:10,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1552ca7e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:10, skipping insertion in model container [2024-09-11 20:54:10,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:10" (2/2) ... [2024-09-11 20:54:10,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2c2feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10, skipping insertion in model container [2024-09-11 20:54:10,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:10" (2/2) ... [2024-09-11 20:54:10,668 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-11 20:54:10,669 INFO L1541 ArrayList]: Function contract at [L16]: requires null, ensures (((((((((\old(m) == 0) || ((7 <= \result) && ((3 < \old(n)) || (\old(n) == 3)))) || ((\old(n) == 2) && (\result == 7))) || (\result == 3)) || ((\result == 5) && (\old(n) == 1))) || (2 < \old(m))) || (\old(m) == 1)) && ((((\old(m) == 0) || (0 < \old(n))) || ((\old(n) == 0) && (2 <= \old(m)))) || (\result == 2))) && ((0 < \old(m)) || ((\old(m) == 0) && (\result == ((long long) \old(n) + 1))))) [2024-09-11 20:54:10,698 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:54:10,867 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/Ackermann03.c[1168,1181] [2024-09-11 20:54:10,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:10,887 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-11 20:54:10,925 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/Ackermann03.c[1168,1181] [2024-09-11 20:54:10,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:10,940 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:54:10,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10 WrapperNode [2024-09-11 20:54:10,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:10,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:54:10,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:54:10,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:54:10,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,972 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 [2024-09-11 20:54:10,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:54:10,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:54:10,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:54:10,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:54:10,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (1/1) ... [2024-09-11 20:54:10,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:11,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-11 20:54:11,017 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 20:54:11,026 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 20:54:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-11 20:54:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:54:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-11 20:54:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-11 20:54:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-11 20:54:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-11 20:54:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-11 20:54:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-11 20:54:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:54:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-11 20:54:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:54:11,121 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:54:11,123 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:54:11,264 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-09-11 20:54:11,264 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:54:11,293 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:54:11,293 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:54:11,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:11 BoogieIcfgContainer [2024-09-11 20:54:11,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:54:11,294 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-11 20:54:11,294 INFO L270 PluginConnector]: Initializing Referee... [2024-09-11 20:54:11,295 INFO L274 PluginConnector]: Referee initialized [2024-09-11 20:54:11,295 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 08:54:09" (1/4) ... [2024-09-11 20:54:11,296 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1b445c99 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:54:11, skipping insertion in model container [2024-09-11 20:54:11,296 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 11.09 08:54:10" (2/4) ... [2024-09-11 20:54:11,296 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1b445c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:54:11, skipping insertion in model container [2024-09-11 20:54:11,296 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:10" (3/4) ... [2024-09-11 20:54:11,296 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1b445c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:54:11, skipping insertion in model container [2024-09-11 20:54:11,297 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:11" (4/4) ... [2024-09-11 20:54:11,297 INFO L79 RefereeObserver]: Analyzing ICFG Ackermann03.c [2024-09-11 20:54:11,300 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-11 20:54:11,301 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-11 20:54:11,301 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC ackermannErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-11 20:54:11,301 INFO L130 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-11 20:54:11,347 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-11 20:54:11,348 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:11,348 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:11,349 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:11,350 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:11,352 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:11,369 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-11 20:54:11,370 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:11,370 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:11,370 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:11,371 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:11,371 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:11,398 INFO L314 BlockEncoder]: Initial Icfg 11 locations, 12 edges [2024-09-11 20:54:11,399 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:11,399 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:11,399 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:11,399 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:11,399 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:11,435 INFO L101 BaseMinimizeStates]: Removed 22 edges and 9 locations by large block encoding [2024-09-11 20:54:11,436 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:11,436 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:11,436 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:11,436 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:11,453 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:11,473 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-11 20:54:11,474 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1b445c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 11.09 08:54:11, skipping insertion in model container [2024-09-11 20:54:11,474 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-11 20:54:11,476 INFO L158 Benchmark]: Toolchain (without parser) took 823.09ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 47.5MB in the beginning and 85.0MB in the end (delta: -37.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2024-09-11 20:54:11,477 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 119.5MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:11,477 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 119.5MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:11,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.01ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 47.4MB in the beginning and 124.7MB in the end (delta: -77.3MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-09-11 20:54:11,479 INFO L158 Benchmark]: Boogie Preprocessor took 43.47ms. Allocated memory is still 159.4MB. Free memory was 124.7MB in the beginning and 122.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 20:54:11,479 INFO L158 Benchmark]: RCFGBuilder took 307.36ms. Allocated memory is still 159.4MB. Free memory was 122.7MB in the beginning and 106.8MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-11 20:54:11,480 INFO L158 Benchmark]: Referee took 180.01ms. Allocated memory is still 159.4MB. Free memory was 106.8MB in the beginning and 85.0MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-09-11 20:54:11,483 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=0, n=0, result=0. Annotation is not valid for all loop-free paths from entry of procedure ackermann to exit of procedure ackermann. One counterexample starts in \old(m)=2, \old(n)=2 and ends in \old(m)=2, \old(n)=2, \result=0, m=0, n=0. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 119.5MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.08ms. Allocated memory is still 119.5MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.01ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 47.4MB in the beginning and 124.7MB in the end (delta: -77.3MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.47ms. Allocated memory is still 159.4MB. Free memory was 124.7MB in the beginning and 122.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.36ms. Allocated memory is still 159.4MB. Free memory was 122.7MB in the beginning and 106.8MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Referee took 180.01ms. Allocated memory is still 159.4MB. Free memory was 106.8MB in the beginning and 85.0MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-11 20:54:11,511 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