./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/gcd01-1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/gcd01-1.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/gcd01-1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/gcd01-1.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:54:14,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:54:14,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-11 20:54:14,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:54:14,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:54:14,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:54:14,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:54:14,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:54:14,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:54:14,578 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:54:14,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:54:14,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:54:14,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:54:14,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:54:14,581 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:54:14,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:54:14,582 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:54:14,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:54:14,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:54:14,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:54:14,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:54:14,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:54:14,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:54:14,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:54:14,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:54:14,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:54:14,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:54:14,588 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:54:14,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:54:14,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:54:14,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:54:14,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:54:14,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:14,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:54:14,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:54:14,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:54:14,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:54:14,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:54:14,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:54:14,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:54:14,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:54:14,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:54:14,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-11 20:54:14,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:54:14,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:54:14,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:54:14,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:54:14,865 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:54:14,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/gcd01-1.c [2024-09-11 20:54:16,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:54:16,526 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:54:16,526 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd01-1.c [2024-09-11 20:54:16,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/ba82599b2/0fb3f6c1f8364784bd263f1147b3ce94/FLAGf9ecdadbf [2024-09-11 20:54:16,551 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/ba82599b2/0fb3f6c1f8364784bd263f1147b3ce94 [2024-09-11 20:54:16,553 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-11 20:54:16,554 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-11 20:54:16,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/gcd01-1.yml/witness-2.1.yml [2024-09-11 20:54:16,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:54:16,604 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-11 20:54:16,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:16,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:54:16,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:54:16,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:16" (1/2) ... [2024-09-11 20:54:16,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32aa4875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:16" (1/2) ... [2024-09-11 20:54:16,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58df696c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,640 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 08:54:16" (2/2) ... [2024-09-11 20:54:16,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32aa4875 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16, skipping insertion in model container [2024-09-11 20:54:16,640 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 08:54:16" (2/2) ... [2024-09-11 20:54:16,650 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-11 20:54:16,651 INFO L1541 ArrayList]: Function contract at [L17]: requires null, ensures (((\old(y2) < 1) || (\old(y1) < 1)) || (0 < \result)) [2024-09-11 20:54:16,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:54:16,860 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/gcd01-1.c[1008,1021] [2024-09-11 20:54:16,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:16,881 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-11 20:54:16,922 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/gcd01-1.c[1008,1021] [2024-09-11 20:54:16,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:16,943 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:54:16,944 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16 WrapperNode [2024-09-11 20:54:16,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:16,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:54:16,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:54:16,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:54:16,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,975 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure gcd is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-11 20:54:16,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:54:16,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:54:16,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:54:16,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:54:16,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (1/1) ... [2024-09-11 20:54:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:17,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-11 20:54:17,023 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 20:54:17,027 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 20:54:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-11 20:54:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:54:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-11 20:54:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2024-09-11 20:54:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-11 20:54:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-11 20:54:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-11 20:54:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-11 20:54:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:54:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-11 20:54:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2024-09-11 20:54:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-11 20:54:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-11 20:54:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-11 20:54:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:54:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-11 20:54:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-11 20:54:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:54:17,118 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:54:17,119 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:54:17,258 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-11 20:54:17,258 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:54:17,280 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:54:17,280 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:54:17,281 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:17 BoogieIcfgContainer [2024-09-11 20:54:17,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:54:17,282 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-11 20:54:17,282 INFO L270 PluginConnector]: Initializing Referee... [2024-09-11 20:54:17,283 INFO L274 PluginConnector]: Referee initialized [2024-09-11 20:54:17,283 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 11.09 08:54:16" (1/4) ... [2024-09-11 20:54:17,283 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5f205e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:54:17, skipping insertion in model container [2024-09-11 20:54:17,284 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 08:54:16" (2/4) ... [2024-09-11 20:54:17,284 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5f205e89 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:54:17, skipping insertion in model container [2024-09-11 20:54:17,284 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:16" (3/4) ... [2024-09-11 20:54:17,285 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5f205e89 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:54:17, skipping insertion in model container [2024-09-11 20:54:17,285 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:17" (4/4) ... [2024-09-11 20:54:17,286 INFO L79 RefereeObserver]: Analyzing ICFG gcd01-1.c [2024-09-11 20:54:17,288 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-11 20:54:17,289 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-11 20:54:17,289 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC gcdErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-11 20:54:17,289 INFO L130 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-11 20:54:17,330 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-11 20:54:17,331 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:17,331 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:17,332 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:17,333 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:17,335 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:17,370 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-11 20:54:17,371 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:17,371 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:17,372 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:17,372 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:17,373 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:17,395 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location mainErr0ASSERT_VIOLATIONERROR_FUNCTION is inductive. [2024-09-11 20:54:17,417 INFO L314 BlockEncoder]: Initial Icfg 10 locations, 12 edges [2024-09-11 20:54:17,417 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:17,417 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:17,418 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:17,418 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:17,418 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:17,442 INFO L101 BaseMinimizeStates]: Removed 22 edges and 8 locations by large block encoding [2024-09-11 20:54:17,442 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:17,442 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:17,443 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:17,443 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:17,450 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:17,453 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location gcdErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-11 20:54:17,457 INFO L58 RefereeStarter]: Annotation is a valid proof of correctness [2024-09-11 20:54:17,457 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5f205e89 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 11.09 08:54:17, skipping insertion in model container [2024-09-11 20:54:17,457 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-11 20:54:17,459 INFO L158 Benchmark]: Toolchain (without parser) took 854.35ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 51.3MB in the beginning and 104.4MB in the end (delta: -53.1MB). Peak memory consumption was 362.7kB. Max. memory is 16.1GB. [2024-09-11 20:54:17,459 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 121.6MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:17,460 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 121.6MB. Free memory was 53.3MB in the beginning and 53.1MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:17,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.14ms. Allocated memory is still 172.0MB. Free memory was 145.6MB in the beginning and 133.6MB in the end (delta: 12.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-09-11 20:54:17,461 INFO L158 Benchmark]: Boogie Preprocessor took 43.18ms. Allocated memory is still 172.0MB. Free memory was 133.6MB in the beginning and 131.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 20:54:17,461 INFO L158 Benchmark]: RCFGBuilder took 291.58ms. Allocated memory is still 172.0MB. Free memory was 131.7MB in the beginning and 118.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-11 20:54:17,462 INFO L158 Benchmark]: Referee took 175.65ms. Allocated memory is still 172.0MB. Free memory was 118.1MB in the beginning and 104.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-11 20:54:17,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - AnnotationCheckResult: Annotation is a valid proof of correctness Annotation is a valid proof of correctness Annotation is valid for all loop-free paths from entry of procedure main to check that a call to reach_error is unreachable at line 41. Annotation is valid for all loop-free paths from entry of procedure gcd to exit of procedure gcd. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 121.6MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 121.6MB. Free memory was 53.3MB in the beginning and 53.1MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.14ms. Allocated memory is still 172.0MB. Free memory was 145.6MB in the beginning and 133.6MB in the end (delta: 12.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.18ms. Allocated memory is still 172.0MB. Free memory was 133.6MB in the beginning and 131.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.58ms. Allocated memory is still 172.0MB. Free memory was 131.7MB in the beginning and 118.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 175.65ms. Allocated memory is still 172.0MB. Free memory was 118.1MB in the beginning and 104.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-11 20:54:17,496 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/gcd01-1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/gcd01-1.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Bitvector.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 20:54:19,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:54:19,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Bitvector.epf [2024-09-11 20:54:19,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:54:19,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:54:19,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:54:19,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:54:19,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:54:19,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:54:19,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:54:19,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:54:19,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:54:19,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:54:19,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:54:19,800 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:54:19,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:54:19,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:54:19,801 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:54:19,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:54:19,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:54:19,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:54:19,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:54:19,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:54:19,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-11 20:54:19,804 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-11 20:54:19,804 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:54:19,804 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-11 20:54:19,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:54:19,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:54:19,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:54:19,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:54:19,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:54:19,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:54:19,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:54:19,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:19,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:54:19,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:54:19,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:54:19,810 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-11 20:54:19,810 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-11 20:54:19,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:54:19,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:54:19,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:54:19,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:54:19,812 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-11 20:54:19,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-11 20:54:20,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:54:20,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:54:20,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:54:20,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:54:20,186 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:54:20,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/gcd01-1.c [2024-09-11 20:54:21,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:54:21,891 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:54:21,891 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd01-1.c [2024-09-11 20:54:21,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/656c8e68b/6caff36014e84602a351934d3e567678/FLAG3ba7d2f8a [2024-09-11 20:54:21,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/656c8e68b/6caff36014e84602a351934d3e567678 [2024-09-11 20:54:21,928 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-11 20:54:21,929 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-11 20:54:21,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/gcd01-1.yml/witness-2.1.yml [2024-09-11 20:54:21,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:54:21,998 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-11 20:54:22,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:22,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:54:22,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:54:22,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:21" (1/2) ... [2024-09-11 20:54:22,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:22, skipping insertion in model container [2024-09-11 20:54:22,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:21" (1/2) ... [2024-09-11 20:54:22,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@316a88bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:22, skipping insertion in model container [2024-09-11 20:54:22,013 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 08:54:21" (2/2) ... [2024-09-11 20:54:22,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46416 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22, skipping insertion in model container [2024-09-11 20:54:22,014 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 08:54:21" (2/2) ... [2024-09-11 20:54:22,021 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-11 20:54:22,022 INFO L1541 ArrayList]: Function contract at [L17]: requires null, ensures (((\old(y2) < 1) || (\old(y1) < 1)) || (0 < \result)) [2024-09-11 20:54:22,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:54:22,215 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/gcd01-1.c[1008,1021] [2024-09-11 20:54:22,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:22,235 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-11 20:54:22,277 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/gcd01-1.c[1008,1021] [2024-09-11 20:54:22,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:54:22,296 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:54:22,297 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22 WrapperNode [2024-09-11 20:54:22,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:54:22,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:54:22,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:54:22,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:54:22,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,317 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,330 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure gcd is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-11 20:54:22,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:54:22,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:54:22,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:54:22,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:54:22,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (1/1) ... [2024-09-11 20:54:22,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:54:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-11 20:54:22,389 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 20:54:22,396 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 20:54:22,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-11 20:54:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:54:22,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-11 20:54:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2024-09-11 20:54:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-11 20:54:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-11 20:54:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-11 20:54:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-11 20:54:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:54:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2024-09-11 20:54:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-09-11 20:54:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-11 20:54:22,516 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:54:22,518 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:54:22,703 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-11 20:54:22,704 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:54:22,738 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:54:22,739 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:54:22,740 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:22 BoogieIcfgContainer [2024-09-11 20:54:22,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:54:22,741 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-11 20:54:22,741 INFO L270 PluginConnector]: Initializing Referee... [2024-09-11 20:54:22,742 INFO L274 PluginConnector]: Referee initialized [2024-09-11 20:54:22,742 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 11.09 08:54:21" (1/4) ... [2024-09-11 20:54:22,743 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@511be1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 11.09 08:54:22, skipping insertion in model container [2024-09-11 20:54:22,743 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 08:54:21" (2/4) ... [2024-09-11 20:54:22,743 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@511be1a2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:54:22, skipping insertion in model container [2024-09-11 20:54:22,743 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 11.09 08:54:22" (3/4) ... [2024-09-11 20:54:22,743 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@511be1a2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 11.09 08:54:22, skipping insertion in model container [2024-09-11 20:54:22,743 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:22" (4/4) ... [2024-09-11 20:54:22,745 INFO L79 RefereeObserver]: Analyzing ICFG gcd01-1.c [2024-09-11 20:54:22,750 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-11 20:54:22,751 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-11 20:54:22,751 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC gcdErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-11 20:54:22,752 INFO L130 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-11 20:54:22,819 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-11 20:54:22,821 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:22,821 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:22,822 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:22,823 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:22,826 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:22,845 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-11 20:54:22,850 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:22,850 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:22,850 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:22,851 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:22,851 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:22,875 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location mainErr0ASSERT_VIOLATIONERROR_FUNCTION is inductive. [2024-09-11 20:54:22,897 INFO L314 BlockEncoder]: Initial Icfg 10 locations, 12 edges [2024-09-11 20:54:22,900 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-11 20:54:22,900 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-11 20:54:22,900 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-11 20:54:22,900 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-11 20:54:22,900 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:22,940 INFO L101 BaseMinimizeStates]: Removed 22 edges and 8 locations by large block encoding [2024-09-11 20:54:22,940 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-11 20:54:22,940 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-11 20:54:22,941 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-11 20:54:22,941 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-11 20:54:22,950 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-11 20:54:23,000 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location gcdErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-11 20:54:23,003 INFO L58 RefereeStarter]: Annotation is a valid proof of correctness [2024-09-11 20:54:23,004 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@511be1a2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 11.09 08:54:23, skipping insertion in model container [2024-09-11 20:54:23,005 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-11 20:54:23,006 INFO L158 Benchmark]: Toolchain (without parser) took 1007.46ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 48.3MB in the end (delta: 11.5MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-09-11 20:54:23,007 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory was 33.5MB in the beginning and 33.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:23,008 INFO L158 Benchmark]: Witness Parser took 0.37ms. Allocated memory is still 79.7MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:54:23,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.54ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 46.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-11 20:54:23,009 INFO L158 Benchmark]: Boogie Preprocessor took 51.66ms. Allocated memory is still 79.7MB. Free memory was 46.5MB in the beginning and 44.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 20:54:23,010 INFO L158 Benchmark]: RCFGBuilder took 389.60ms. Allocated memory is still 79.7MB. Free memory was 44.4MB in the beginning and 30.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-11 20:54:23,011 INFO L158 Benchmark]: Referee took 263.78ms. Allocated memory is still 79.7MB. Free memory was 30.5MB in the beginning and 48.3MB in the end (delta: -17.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-09-11 20:54:23,014 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - AnnotationCheckResult: Annotation is a valid proof of correctness Annotation is a valid proof of correctness Annotation is valid for all loop-free paths from entry of procedure main to check that a call to reach_error is unreachable at line 41. Annotation is valid for all loop-free paths from entry of procedure gcd to exit of procedure gcd. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory was 33.5MB in the beginning and 33.4MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.37ms. Allocated memory is still 79.7MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.54ms. Allocated memory is still 79.7MB. Free memory was 59.8MB in the beginning and 46.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.66ms. Allocated memory is still 79.7MB. Free memory was 46.5MB in the beginning and 44.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 389.60ms. Allocated memory is still 79.7MB. Free memory was 44.4MB in the beginning and 30.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Referee took 263.78ms. Allocated memory is still 79.7MB. Free memory was 30.5MB in the beginning and 48.3MB in the end (delta: -17.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-11 20:54:23,046 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 Result: UNKNOWN