./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/cpachecker-verification-files/SV-COMP24_unreach-call/Ackermann03.yml/output/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/cpachecker-verification-files/SV-COMP24_unreach-call/Ackermann03.yml/output/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-27b4987-m [2024-09-21 19:11:48,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 19:11:48,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-21 19:11:48,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 19:11:48,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 19:11:48,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 19:11:48,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 19:11:48,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 19:11:48,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 19:11:48,253 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 19:11:48,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 19:11:48,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 19:11:48,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 19:11:48,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 19:11:48,256 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 19:11:48,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 19:11:48,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 19:11:48,258 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 19:11:48,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 19:11:48,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 19:11:48,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 19:11:48,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 19:11:48,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 19:11:48,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 19:11:48,263 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 19:11:48,263 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 19:11:48,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 19:11:48,263 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 19:11:48,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 19:11:48,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 19:11:48,270 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-21 19:11:48,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 19:11:48,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 19:11:48,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:11:48,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 19:11:48,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 19:11:48,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 19:11:48,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 19:11:48,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 19:11:48,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 19:11:48,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 19:11:48,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 19:11:48,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 19:11:48,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-21 19:11:48,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 19:11:48,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 19:11:48,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 19:11:48,556 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-21 19:11:48,557 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-21 19:11:48,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/cpachecker-verification-files/SV-COMP24_unreach-call/Ackermann03.yml/output/witness-2.1.yml [2024-09-21 19:11:48,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 19:11:48,617 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 19:11:48,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-21 19:11:50,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 19:11:50,265 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 19:11:50,266 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-21 19:11:50,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/af8d762ba/cddc42c2023d4ad4aaaffd23bea9f983/FLAGd48a831d4 [2024-09-21 19:11:50,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/af8d762ba/cddc42c2023d4ad4aaaffd23bea9f983 [2024-09-21 19:11:50,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 19:11:50,286 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-21 19:11:50,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 19:11:50,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 19:11:50,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 19:11:50,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.09 07:11:48" (1/2) ... [2024-09-21 19:11:50,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d76e92 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:11:50, skipping insertion in model container [2024-09-21 19:11:50,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.09 07:11:48" (1/2) ... [2024-09-21 19:11:50,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@149c3897 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:11:50, skipping insertion in model container [2024-09-21 19:11:50,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:11:50" (2/2) ... [2024-09-21 19:11:50,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d76e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50, skipping insertion in model container [2024-09-21 19:11:50,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:11:50" (2/2) ... [2024-09-21 19:11:50,306 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-21 19:11:50,307 INFO L1541 ArrayList]: Function contract at [L16]: requires 1, ensures (!(n == (1)) || (1)) && (!(1) || (1)) [2024-09-21 19:11:50,307 INFO L1541 ArrayList]: Function contract at [L3]: requires 1, ensures 1 [2024-09-21 19:11:50,307 INFO L1541 ArrayList]: Function contract at [L27]: requires 1, ensures 1 [2024-09-21 19:11:50,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 19:11:50,507 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/Ackermann03.c[1168,1181] [2024-09-21 19:11:50,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:11:50,523 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-21 19:11:50,570 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/Ackermann03.c[1168,1181] [2024-09-21 19:11:50,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:11:50,596 INFO L204 MainTranslator]: Completed translation [2024-09-21 19:11:50,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50 WrapperNode [2024-09-21 19:11:50,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 19:11:50,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 19:11:50,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 19:11:50,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 19:11:50,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,634 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure reach_error is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-21 19:11:50,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,640 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 19:11:50,650 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 19:11:50,650 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 19:11:50,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 19:11:50,652 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (1/1) ... [2024-09-21 19:11:50,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:11:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-21 19:11:50,678 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) [2024-09-21 19:11:50,680 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 [2024-09-21 19:11:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 19:11:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 19:11:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-21 19:11:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-21 19:11:50,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 19:11:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-21 19:11:50,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-21 19:11:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-21 19:11:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 19:11:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-21 19:11:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-21 19:11:50,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 19:11:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 19:11:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-21 19:11:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 19:11:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-21 19:11:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-21 19:11:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-21 19:11:50,800 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 19:11:50,803 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 19:11:50,808 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:50,835 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:50,937 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:50,978 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 19:11:51,016 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 19:11:51,016 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 19:11:51,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:11:51 BoogieIcfgContainer [2024-09-21 19:11:51,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 19:11:51,018 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-21 19:11:51,018 INFO L270 PluginConnector]: Initializing Referee... [2024-09-21 19:11:51,019 INFO L274 PluginConnector]: Referee initialized [2024-09-21 19:11:51,019 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.09 07:11:48" (1/4) ... [2024-09-21 19:11:51,020 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1d4a1aaa and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 21.09 07:11:51, skipping insertion in model container [2024-09-21 19:11:51,020 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 21.09 07:11:50" (2/4) ... [2024-09-21 19:11:51,020 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1d4a1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 21.09 07:11:51, skipping insertion in model container [2024-09-21 19:11:51,021 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:50" (3/4) ... [2024-09-21 19:11:51,022 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1d4a1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 21.09 07:11:51, skipping insertion in model container [2024-09-21 19:11:51,022 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:11:51" (4/4) ... [2024-09-21 19:11:51,023 INFO L79 RefereeObserver]: Analyzing ICFG Ackermann03.c [2024-09-21 19:11:51,027 INFO L113 InvariantChecker]: Found 0 loops. [2024-09-21 19:11:51,029 INFO L373 InvariantChecker]: Will check inductivity from ENTRY ackermannENTRY to ERROR_LOC ackermannErr2REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 6 edges. [2024-09-21 19:11:51,029 INFO L373 InvariantChecker]: Will check inductivity from ENTRY ackermannENTRY to ERROR_LOC ackermannErr1REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 4 edges. [2024-09-21 19:11:51,029 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 4 edges. [2024-09-21 19:11:51,030 INFO L373 InvariantChecker]: Will check inductivity from ENTRY ackermannENTRY to ERROR_LOC ackermannErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 4 edges. [2024-09-21 19:11:51,030 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr2ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 11 edges. [2024-09-21 19:11:51,030 INFO L373 InvariantChecker]: Will check inductivity from ENTRY ackermannENTRY to ERROR_LOC ackermannErr3ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-21 19:11:51,030 INFO L373 InvariantChecker]: Will check inductivity from ENTRY reach_errorENTRY to ERROR_LOC reach_errorErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 2 edges. [2024-09-21 19:11:51,031 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 2 edges. [2024-09-21 19:11:51,031 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr1ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-21 19:11:51,031 INFO L131 InvariantChecker]: Will check 9 loop-free subgraphs from procedure entry to error location [2024-09-21 19:11:51,078 INFO L314 BlockEncoder]: Initial Icfg 7 locations, 6 edges [2024-09-21 19:11:51,079 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,079 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,080 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,081 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,083 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,094 INFO L101 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2024-09-21 19:11:51,096 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,096 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,096 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,097 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,097 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,115 INFO L520 InvariantChecker]: The annotation(s) from entry ackermannENTRY to error location ackermannErr2REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:51,127 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 4 edges [2024-09-21 19:11:51,127 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,127 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,127 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,128 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,128 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,131 INFO L101 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2024-09-21 19:11:51,131 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,131 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,132 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,132 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,132 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,134 INFO L520 InvariantChecker]: The annotation(s) from entry ackermannENTRY to error location ackermannErr1REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:51,153 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 4 edges [2024-09-21 19:11:51,154 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,154 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,154 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,154 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,154 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,161 INFO L101 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2024-09-21 19:11:51,162 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,162 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,163 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,164 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,164 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,166 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:51,175 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 4 edges [2024-09-21 19:11:51,175 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,175 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,175 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,175 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,176 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,178 INFO L101 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2024-09-21 19:11:51,178 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,179 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,179 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,179 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,179 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,181 INFO L520 InvariantChecker]: The annotation(s) from entry ackermannENTRY to error location ackermannErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:51,190 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 11 edges [2024-09-21 19:11:51,190 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,190 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,191 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,191 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,191 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,199 INFO L101 BaseMinimizeStates]: Removed 22 edges and 7 locations by large block encoding [2024-09-21 19:11:51,200 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,200 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,200 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,200 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,204 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,206 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr2ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:51,213 INFO L314 BlockEncoder]: Initial Icfg 11 locations, 12 edges [2024-09-21 19:11:51,214 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,214 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,214 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,214 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,214 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,221 INFO L101 BaseMinimizeStates]: Removed 22 edges and 9 locations by large block encoding [2024-09-21 19:11:51,222 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,222 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,222 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,222 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,224 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,225 INFO L520 InvariantChecker]: The annotation(s) from entry ackermannENTRY to error location ackermannErr3ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:51,231 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:11:51,231 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,231 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,232 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,232 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,232 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,233 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:11:51,233 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,233 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,233 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,233 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,233 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,235 INFO L520 InvariantChecker]: The annotation(s) from entry reach_errorENTRY to error location reach_errorErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:51,244 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:11:51,244 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,244 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,244 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,244 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,244 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,245 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:11:51,245 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,245 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,246 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,247 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,247 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,249 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:51,258 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-21 19:11:51,259 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:51,259 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:51,260 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:51,260 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:51,260 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,272 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-21 19:11:51,273 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:51,274 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:51,274 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:51,274 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:51,274 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:51,292 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-21 19:11:51,293 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@1d4a1aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 21.09 07:11:51, skipping insertion in model container [2024-09-21 19:11:51,293 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-21 19:11:51,295 INFO L158 Benchmark]: Toolchain (without parser) took 1008.18ms. Allocated memory is still 138.4MB. Free memory was 70.4MB in the beginning and 61.6MB in the end (delta: 8.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-09-21 19:11:51,296 INFO L158 Benchmark]: Witness Parser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:11:51,296 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:11:51,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.87ms. Allocated memory is still 138.4MB. Free memory was 70.3MB in the beginning and 101.6MB in the end (delta: -31.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-09-21 19:11:51,298 INFO L158 Benchmark]: Boogie Preprocessor took 51.29ms. Allocated memory is still 138.4MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 19:11:51,299 INFO L158 Benchmark]: RCFGBuilder took 367.12ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 87.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 19:11:51,300 INFO L158 Benchmark]: Referee took 275.60ms. Allocated memory is still 138.4MB. Free memory was 87.4MB in the beginning and 61.6MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-09-21 19:11:51,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - AnnotationCheckResult: Annotation is not a valid proof of correctness. Annotation is not a valid proof of correctness. Annotation is not valid for all loop-free paths from entry of procedure main to check that a call to reach_error is unreachable at line 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 ULTIMATE.start to check that procedure precondition always holds at line -1. Annotation is valid for all loop-free paths from entry of procedure ackermann to check that procedure precondition always holds at line 23. Annotation is valid for all loop-free paths from entry of procedure reach_error to exit of procedure reach_error. Annotation is valid for all loop-free paths from entry of procedure ackermann to exit of procedure ackermann. Annotation is valid for all loop-free paths from entry of procedure main to exit of procedure main. Annotation is valid for all loop-free paths from entry of procedure ackermann to check that procedure precondition always holds at line 23. Annotation is valid for all loop-free paths from entry of procedure main to check that procedure precondition always holds at line 41. Annotation is valid for all loop-free paths from entry of procedure ackermann to check that procedure precondition always holds at line 21. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.29ms. Allocated memory is still 138.4MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.87ms. Allocated memory is still 138.4MB. Free memory was 70.3MB in the beginning and 101.6MB in the end (delta: -31.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.29ms. Allocated memory is still 138.4MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 367.12ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 87.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 275.60ms. Allocated memory is still 138.4MB. Free memory was 87.4MB in the beginning and 61.6MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-09-21 19:11:51,337 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