./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/Fibonacci02.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/Fibonacci02.c ../results/automizer-verification-files/SV-COMP24_unreach-call/Fibonacci02.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 [2024-09-12 16:51:53,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:51:53,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-12 16:51:53,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:51:53,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:51:53,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:51:53,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:51:53,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:51:53,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:51:53,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:51:53,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:51:53,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:51:53,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:51:53,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:51:53,779 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:51:53,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:51:53,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:51:53,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:51:53,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:51:53,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:51:53,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:51:53,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:51:53,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:51:53,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:51:53,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:51:53,782 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:51:53,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:51:53,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:51:53,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:51:53,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:51:53,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:51:53,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:51:53,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:51:53,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:51:53,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:51:53,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:51:53,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:51:53,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:51:53,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:51:53,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:51:53,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:51:53,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:51:53,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-12 16:51:53,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:51:53,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:51:53,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:51:53,994 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-12 16:51:53,997 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-12 16:51:53,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/Fibonacci02.yml/witness-2.1.yml [2024-09-12 16:51:54,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:51:54,059 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:51:54,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/Fibonacci02.c [2024-09-12 16:51:55,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:51:55,356 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:51:55,357 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Fibonacci02.c [2024-09-12 16:51:55,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/231b0dc01/96a42a4caa4c485eaa6fb9ba0b366b56/FLAGc2b72884a [2024-09-12 16:51:55,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/231b0dc01/96a42a4caa4c485eaa6fb9ba0b366b56 [2024-09-12 16:51:55,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:51:55,785 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-12 16:51:55,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:51:55,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:51:55,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:51:55,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.09 04:51:54" (1/2) ... [2024-09-12 16:51:55,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ed7538 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.09 04:51:55, skipping insertion in model container [2024-09-12 16:51:55,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.09 04:51:54" (1/2) ... [2024-09-12 16:51:55,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60df6410 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.09 04:51:55, skipping insertion in model container [2024-09-12 16:51:55,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:51:55" (2/2) ... [2024-09-12 16:51:55,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ed7538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:55, skipping insertion in model container [2024-09-12 16:51:55,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:51:55" (2/2) ... [2024-09-12 16:51:55,802 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-12 16:51:55,805 INFO L1541 ArrayList]: Function contract at [L16]: requires null, ensures ((\result == 0) || (0 < \old(n))) [2024-09-12 16:51:55,816 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:51:55,960 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/Fibonacci02.c[715,728] [2024-09-12 16:51:55,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:51:55,970 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-12 16:51:55,994 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/Fibonacci02.c[715,728] [2024-09-12 16:51:55,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:51:56,009 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:51:56,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56 WrapperNode [2024-09-12 16:51:56,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:51:56,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:51:56,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:51:56,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:51:56,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,030 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibonacci is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-12 16:51:56,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,038 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:51:56,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:51:56,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:51:56,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:51:56,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (1/1) ... [2024-09-12 16:51:56,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:51:56,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-12 16:51:56,079 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) [2024-09-12 16:51:56,082 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 [2024-09-12 16:51:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:51:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:51:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-12 16:51:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-09-12 16:51:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:51:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-12 16:51:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-12 16:51:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 16:51:56,178 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:51:56,180 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:51:56,286 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-09-12 16:51:56,286 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:51:56,306 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:51:56,306 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:51:56,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:51:56 BoogieIcfgContainer [2024-09-12 16:51:56,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:51:56,307 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-12 16:51:56,307 INFO L270 PluginConnector]: Initializing Referee... [2024-09-12 16:51:56,308 INFO L274 PluginConnector]: Referee initialized [2024-09-12 16:51:56,308 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.09 04:51:54" (1/4) ... [2024-09-12 16:51:56,309 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@61566d6a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 12.09 04:51:56, skipping insertion in model container [2024-09-12 16:51:56,309 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 12.09 04:51:55" (2/4) ... [2024-09-12 16:51:56,309 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@61566d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 12.09 04:51:56, skipping insertion in model container [2024-09-12 16:51:56,309 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:51:56" (3/4) ... [2024-09-12 16:51:56,309 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@61566d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 12.09 04:51:56, skipping insertion in model container [2024-09-12 16:51:56,309 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:51:56" (4/4) ... [2024-09-12 16:51:56,311 INFO L79 RefereeObserver]: Analyzing ICFG Fibonacci02.c [2024-09-12 16:51:56,314 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-12 16:51:56,316 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-09-12 16:51:56,317 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibonacciErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-12 16:51:56,318 INFO L130 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-09-12 16:51:56,341 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-12 16:51:56,342 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-12 16:51:56,342 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-12 16:51:56,343 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-12 16:51:56,344 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-12 16:51:56,345 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-12 16:51:56,360 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-12 16:51:56,361 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-12 16:51:56,361 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-12 16:51:56,361 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-12 16:51:56,362 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-12 16:51:56,362 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-12 16:51:56,388 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-12 16:51:56,388 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-12 16:51:56,389 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-12 16:51:56,389 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-12 16:51:56,389 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-12 16:51:56,389 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-12 16:51:56,420 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-12 16:51:56,421 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-12 16:51:56,421 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-12 16:51:56,421 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-12 16:51:56,421 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-12 16:51:56,426 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-12 16:51:56,428 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location fibonacciErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-12 16:51:56,433 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-12 16:51:56,437 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@61566d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 12.09 04:51:56, skipping insertion in model container [2024-09-12 16:51:56,437 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-12 16:51:56,438 INFO L158 Benchmark]: Toolchain (without parser) took 652.54ms. Allocated memory is still 169.9MB. Free memory was 100.4MB in the beginning and 114.2MB in the end (delta: -13.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:51:56,439 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 169.9MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:51:56,439 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 169.9MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:51:56,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.50ms. Allocated memory is still 169.9MB. Free memory was 100.1MB in the beginning and 138.4MB in the end (delta: -38.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-09-12 16:51:56,439 INFO L158 Benchmark]: Boogie Preprocessor took 29.02ms. Allocated memory is still 169.9MB. Free memory was 138.2MB in the beginning and 136.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:51:56,440 INFO L158 Benchmark]: RCFGBuilder took 265.32ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 123.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-12 16:51:56,440 INFO L158 Benchmark]: Referee took 129.78ms. Allocated memory is still 169.9MB. Free memory was 123.5MB in the beginning and 114.2MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-12 16:51:56,442 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 33. One counterexample starts in and ends in result=0, x=0. Annotation is valid for all loop-free paths from entry of procedure fibonacci to exit of procedure fibonacci. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.11ms. Allocated memory is still 169.9MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.65ms. Allocated memory is still 169.9MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 220.50ms. Allocated memory is still 169.9MB. Free memory was 100.1MB in the beginning and 138.4MB in the end (delta: -38.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.02ms. Allocated memory is still 169.9MB. Free memory was 138.2MB in the beginning and 136.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.32ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 123.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 129.78ms. Allocated memory is still 169.9MB. Free memory was 123.5MB in the beginning and 114.2MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-12 16:51:56,461 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