This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:11:08,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:11:08,125 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-13 10:11:08,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:11:08,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:11:08,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:11:08,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:11:08,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:11:08,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:11:08,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:11:08,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:11:08,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:11:08,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:11:08,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:11:08,169 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:11:08,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:11:08,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:11:08,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:11:08,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:11:08,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:11:08,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:11:08,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:11:08,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:11:08,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:11:08,172 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:11:08,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:11:08,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:11:08,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:11:08,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:11:08,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:11:08,175 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-13 10:11:08,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:11:08,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:11:08,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:11:08,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:11:08,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:11:08,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:11:08,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:11:08,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:11:08,178 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:11:08,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:11:08,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:11:08,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:11:08,181 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:11:08,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:11:08,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:11:08,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:11:08,470 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:11:08,471 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:11:08,472 INFO L431 ainManager$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 [2024-09-13 10:11:08,562 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:11:08,564 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:11:08,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/Ackermann04.c [2024-09-13 10:11:10,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:11:10,203 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:11:10,204 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c [2024-09-13 10:11:10,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/fd0f1af7e/1f2f4cdd8bb7480bb2da66646f9799ea/FLAGd0ed54b24 [2024-09-13 10:11:10,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/fd0f1af7e/1f2f4cdd8bb7480bb2da66646f9799ea [2024-09-13 10:11:10,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:11:10,595 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-13 10:11:10,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:11:10,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:11:10,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:11:10,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:11:08" (1/2) ... [2024-09-13 10:11:10,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fbb8c6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:11:10, skipping insertion in model container [2024-09-13 10:11:10,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:11:08" (1/2) ... [2024-09-13 10:11:10,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a0b650 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:11:10, skipping insertion in model container [2024-09-13 10:11:10,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:11:10" (2/2) ... [2024-09-13 10:11:10,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fbb8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10, skipping insertion in model container [2024-09-13 10:11:10,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:11:10" (2/2) ... [2024-09-13 10:11:10,615 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:11:10,616 INFO L1541 ArrayList]: Function contract at [L16]: requires null, ensures (((\old(n) < \result) || (\old(m) != 0)) && ((0 < \old(m)) || (\old(m) == 0))) [2024-09-13 10:11:10,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:11:10,791 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/Ackermann04.c[1166,1179] [2024-09-13 10:11:10,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:11:10,807 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-13 10:11:10,844 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/Ackermann04.c[1166,1179] [2024-09-13 10:11:10,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:11:10,860 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:11:10,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10 WrapperNode [2024-09-13 10:11:10,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:11:10,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:11:10,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:11:10,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:11:10,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,892 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 [2024-09-13 10:11:10,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:11:10,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:11:10,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:11:10,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:11:10,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (1/1) ... [2024-09-13 10:11:10,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:11:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-13 10:11:10,936 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) [2024-09-13 10:11:10,938 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 [2024-09-13 10:11:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 10:11:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:11:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-13 10:11:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-13 10:11:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 10:11:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-13 10:11:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-13 10:11:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-13 10:11:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:11:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-13 10:11:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-13 10:11:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 10:11:11,039 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:11:11,042 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:11:11,202 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:11:11,226 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:11:11,226 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:11:11,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:11:11 BoogieIcfgContainer [2024-09-13 10:11:11,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:11:11,228 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-13 10:11:11,229 INFO L270 PluginConnector]: Initializing Referee... [2024-09-13 10:11:11,230 INFO L274 PluginConnector]: Referee initialized [2024-09-13 10:11:11,230 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:11:08" (1/4) ... [2024-09-13 10:11:11,230 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4a375044 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 13.09 10:11:11, skipping insertion in model container [2024-09-13 10:11:11,231 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 13.09 10:11:10" (2/4) ... [2024-09-13 10:11:11,231 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4a375044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 13.09 10:11:11, skipping insertion in model container [2024-09-13 10:11:11,231 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:10" (3/4) ... [2024-09-13 10:11:11,231 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4a375044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 13.09 10:11:11, skipping insertion in model container [2024-09-13 10:11:11,231 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:11:11" (4/4) ... [2024-09-13 10:11:11,232 INFO L79 RefereeObserver]: Analyzing ICFG Ackermann04.c [2024-09-13 10:11:11,236 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-13 10:11:11,236 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-13 10:11:11,236 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC ackermannErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-13 10:11:11,237 INFO L130 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-13 10:11:11,332 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-13 10:11:11,338 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-13 10:11:11,338 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-13 10:11:11,339 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-13 10:11:11,342 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-13 10:11:11,344 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:11,372 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-13 10:11:11,373 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:11,373 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-13 10:11:11,374 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-13 10:11:11,374 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-13 10:11:11,375 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-13 10:11:11,408 INFO L314 BlockEncoder]: Initial Icfg 11 locations, 12 edges [2024-09-13 10:11:11,408 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-13 10:11:11,408 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-13 10:11:11,408 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-13 10:11:11,408 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-13 10:11:11,408 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:11,434 INFO L101 BaseMinimizeStates]: Removed 22 edges and 9 locations by large block encoding [2024-09-13 10:11:11,434 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:11,435 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-13 10:11:11,435 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-13 10:11:11,435 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-13 10:11:11,443 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-13 10:11:11,453 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location ackermannErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-13 10:11:11,460 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-13 10:11:11,461 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@4a375044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 13.09 10:11:11, skipping insertion in model container [2024-09-13 10:11:11,461 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-13 10:11:11,463 INFO L158 Benchmark]: Toolchain (without parser) took 866.54ms. Allocated memory is still 207.6MB. Free memory was 138.9MB in the beginning and 168.1MB in the end (delta: -29.2MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2024-09-13 10:11:11,463 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 87.3MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:11:11,464 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 207.6MB. Free memory is still 184.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:11:11,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.33ms. Allocated memory is still 207.6MB. Free memory was 138.9MB in the beginning and 126.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:11:11,466 INFO L158 Benchmark]: Boogie Preprocessor took 40.94ms. Allocated memory is still 207.6MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:11:11,466 INFO L158 Benchmark]: RCFGBuilder took 322.97ms. Allocated memory is still 207.6MB. Free memory was 123.9MB in the beginning and 110.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:11:11,467 INFO L158 Benchmark]: Referee took 233.44ms. Allocated memory is still 207.6MB. Free memory was 110.1MB in the beginning and 168.1MB in the end (delta: -57.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-09-13 10:11:11,470 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: * Witness Parser took 0.20ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 87.3MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.31ms. Allocated memory is still 207.6MB. Free memory is still 184.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.33ms. Allocated memory is still 207.6MB. Free memory was 138.9MB in the beginning and 126.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.94ms. Allocated memory is still 207.6MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.97ms. Allocated memory is still 207.6MB. Free memory was 123.9MB in the beginning and 110.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Referee took 233.44ms. Allocated memory is still 207.6MB. Free memory was 110.1MB in the beginning and 168.1MB in the end (delta: -57.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-13 10:11:11,497 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...