./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_20-2.c --full-output --witness-type correctness_witness --validate ../results/cpachecker-verification-files/SV-COMP24_unreach-call/fibo_20-2.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-simple/fibo_20-2.c ../results/cpachecker-verification-files/SV-COMP24_unreach-call/fibo_20-2.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 19:11:55,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 19:11:55,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-21 19:11:55,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 19:11:55,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 19:11:55,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 19:11:55,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 19:11:55,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 19:11:55,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 19:11:55,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 19:11:55,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 19:11:55,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 19:11:55,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 19:11:55,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 19:11:55,230 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 19:11:55,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 19:11:55,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 19:11:55,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 19:11:55,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 19:11:55,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 19:11:55,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 19:11:55,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 19:11:55,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 19:11:55,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 19:11:55,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 19:11:55,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 19:11:55,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 19:11:55,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 19:11:55,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 19:11:55,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 19:11:55,241 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-21 19:11:55,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 19:11:55,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 19:11:55,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:11:55,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 19:11:55,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 19:11:55,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 19:11:55,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 19:11:55,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 19:11:55,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 19:11:55,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 19:11:55,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 19:11:55,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 19:11:55,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-21 19:11:55,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 19:11:55,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 19:11:55,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 19:11:55,472 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-21 19:11:55,476 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-21 19:11:55,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/cpachecker-verification-files/SV-COMP24_unreach-call/fibo_20-2.yml/output/witness-2.1.yml [2024-09-21 19:11:55,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 19:11:55,539 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 19:11:55,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive-simple/fibo_20-2.c [2024-09-21 19:11:57,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 19:11:57,159 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 19:11:57,160 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_20-2.c [2024-09-21 19:11:57,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/a719878cc/d5bc9f2024ae49fdba4c5aba82a6240f/FLAG97a1cc98d [2024-09-21 19:11:57,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/a719878cc/d5bc9f2024ae49fdba4c5aba82a6240f [2024-09-21 19:11:57,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 19:11:57,572 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-21 19:11:57,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 19:11:57,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 19:11:57,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 19:11:57,579 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 07:11:55" (1/2) ... [2024-09-21 19:11:57,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449928a7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:11:57, skipping insertion in model container [2024-09-21 19:11:57,580 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 07:11:55" (1/2) ... [2024-09-21 19:11:57,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b2f7966 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:11:57, skipping insertion in model container [2024-09-21 19:11:57,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:11:57" (2/2) ... [2024-09-21 19:11:57,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449928a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57, skipping insertion in model container [2024-09-21 19:11:57,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:11:57" (2/2) ... [2024-09-21 19:11:57,585 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-21 19:11:57,585 INFO L1541 ArrayList]: Function contract at [L7]: requires n == (0) || n == (1) || n == (7) || n == (9) || n == (4) || n == (2) || n == (3) || n == (6) || n == (5) || n == (10) || n == (8) || n == (14) || n == (11) || n == (13) || n == (17) || n == (12) || n == (15) || n == (16) || n == (20) || n == (18) || n == (19), ensures (!(n == (1)) || (1)) && (!(n == (3)) || (1)) && (!(n == (4)) || (1)) && (!(n == (2)) || (1)) && (!(n == (5)) || (1)) && (!(n == (14)) || (1)) && (!(n == (9)) || (1)) && (!(n == (6)) || (1)) && (!(n == (0)) || (1)) && (!(n == (7)) || (1)) && (!(n == (8)) || (1)) && (!(n == (10)) || (1)) && (!(n == (13)) || (1)) && (!(n == (11)) || (1)) && (!(n == (12)) || (1)) && (!(n == (15)) || (1)) && (!(n == (16)) || (1)) && (!(n == (17)) || (1)) && (!(n == (20)) || (1)) && (!(n == (19)) || (1)) && (!(n == (18)) || (1)) [2024-09-21 19:11:57,586 INFO L1541 ArrayList]: Function contract at [L4]: requires 1, ensures 1 [2024-09-21 19:11:57,586 INFO L1541 ArrayList]: Function contract at [L25]: requires 1, ensures 1 [2024-09-21 19:11:57,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 19:11:57,773 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-simple/fibo_20-2.c[745,758] [2024-09-21 19:11:57,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:11:57,805 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 19:11:57,881 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-simple/fibo_20-2.c[745,758] [2024-09-21 19:11:57,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:11:57,907 INFO L204 MainTranslator]: Completed translation [2024-09-21 19:11:57,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57 WrapperNode [2024-09-21 19:11:57,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 19:11:57,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 19:11:57,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 19:11:57,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 19:11:57,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,955 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 19:11:57,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 19:11:57,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 19:11:57,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 19:11:57,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 19:11:57,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (1/1) ... [2024-09-21 19:11:57,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:11:58,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-21 19:11:58,024 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 19:11:58,025 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 19:11:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 19:11:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 19:11:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-21 19:11:58,062 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-09-21 19:11:58,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 19:11:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-21 19:11:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-21 19:11:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-21 19:11:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 19:11:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-21 19:11:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-21 19:11:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-21 19:11:58,119 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 19:11:58,121 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 19:11:58,124 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:58,142 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:58,208 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:58,268 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 19:11:58,291 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 19:11:58,291 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 19:11:58,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:11:58 BoogieIcfgContainer [2024-09-21 19:11:58,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 19:11:58,292 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-21 19:11:58,293 INFO L270 PluginConnector]: Initializing Referee... [2024-09-21 19:11:58,293 INFO L274 PluginConnector]: Referee initialized [2024-09-21 19:11:58,293 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 07:11:55" (1/4) ... [2024-09-21 19:11:58,294 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@624c48af and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 21.09 07:11:58, skipping insertion in model container [2024-09-21 19:11:58,294 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 21.09 07:11:57" (2/4) ... [2024-09-21 19:11:58,294 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@624c48af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 21.09 07:11:58, skipping insertion in model container [2024-09-21 19:11:58,294 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:57" (3/4) ... [2024-09-21 19:11:58,295 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@624c48af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 21.09 07:11:58, skipping insertion in model container [2024-09-21 19:11:58,295 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:11:58" (4/4) ... [2024-09-21 19:11:58,296 INFO L79 RefereeObserver]: Analyzing ICFG fibo_20-2.c [2024-09-21 19:11:58,298 INFO L113 InvariantChecker]: Found 0 loops. [2024-09-21 19:11:58,299 INFO L373 InvariantChecker]: Will check inductivity from ENTRY fiboENTRY to ERROR_LOC fiboErr2ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-21 19:11:58,299 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 2 edges. [2024-09-21 19:11:58,299 INFO L373 InvariantChecker]: Will check inductivity from ENTRY fiboENTRY to ERROR_LOC fiboErr1REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 6 edges. [2024-09-21 19:11:58,299 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr2ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 8 edges. [2024-09-21 19:11:58,299 INFO L373 InvariantChecker]: Will check inductivity from ENTRY fiboENTRY to ERROR_LOC fiboErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 4 edges. [2024-09-21 19:11:58,300 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 19:11:58,300 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 19:11:58,300 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr1ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-09-21 19:11:58,300 INFO L131 InvariantChecker]: Will check 8 loop-free subgraphs from procedure entry to error location [2024-09-21 19:11:58,348 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-21 19:11:58,351 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,351 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,352 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,353 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,355 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,375 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-21 19:11:58,376 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,377 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,377 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,377 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,380 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,394 INFO L520 InvariantChecker]: The annotation(s) from entry fiboENTRY to error location fiboErr2ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:58,402 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:11:58,403 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,403 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,403 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,403 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,403 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,404 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:11:58,405 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,405 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,405 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,405 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,405 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,419 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:58,428 INFO L314 BlockEncoder]: Initial Icfg 7 locations, 6 edges [2024-09-21 19:11:58,432 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,432 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,432 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,432 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,433 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,444 INFO L101 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2024-09-21 19:11:58,445 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,445 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,445 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,445 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,445 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,451 INFO L520 InvariantChecker]: The annotation(s) from entry fiboENTRY to error location fiboErr1REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:58,464 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 8 edges [2024-09-21 19:11:58,465 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,465 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,466 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,466 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,466 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,486 INFO L101 BaseMinimizeStates]: Removed 15 edges and 6 locations by large block encoding [2024-09-21 19:11:58,487 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,487 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,487 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,487 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,487 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,498 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr2ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:58,508 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 4 edges [2024-09-21 19:11:58,509 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,509 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,509 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,509 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,509 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,516 INFO L101 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2024-09-21 19:11:58,517 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,518 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,519 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,519 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,519 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,527 INFO L520 InvariantChecker]: The annotation(s) from entry fiboENTRY to error location fiboErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:58,536 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:11:58,538 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,538 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,538 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,538 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,538 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,539 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:11:58,539 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,539 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,539 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,539 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,539 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,541 INFO L520 InvariantChecker]: The annotation(s) from entry reach_errorENTRY to error location reach_errorErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:58,551 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:11:58,554 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,554 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,554 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,554 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,554 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,555 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:11:58,555 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,555 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,555 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,555 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,555 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,556 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:58,564 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-21 19:11:58,565 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:58,565 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:58,566 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:58,566 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:58,566 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,572 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-21 19:11:58,572 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:58,573 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:58,573 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:58,574 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:58,575 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:58,595 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-21 19:11:58,596 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@624c48af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 21.09 07:11:58, skipping insertion in model container [2024-09-21 19:11:58,596 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-21 19:11:58,597 INFO L158 Benchmark]: Toolchain (without parser) took 1024.76ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 63.3MB in the beginning and 95.2MB in the end (delta: -31.9MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2024-09-21 19:11:58,598 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 138.4MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:11:58,598 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 138.4MB. Free memory is still 109.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:11:58,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.52ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 62.9MB in the beginning and 155.0MB in the end (delta: -92.1MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-09-21 19:11:58,599 INFO L158 Benchmark]: Boogie Preprocessor took 67.47ms. Allocated memory is still 190.8MB. Free memory was 155.0MB in the beginning and 153.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 19:11:58,599 INFO L158 Benchmark]: RCFGBuilder took 315.20ms. Allocated memory is still 190.8MB. Free memory was 153.7MB in the beginning and 138.3MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-21 19:11:58,599 INFO L158 Benchmark]: Referee took 303.49ms. Allocated memory is still 190.8MB. Free memory was 138.3MB in the beginning and 95.2MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-09-21 19:11:58,602 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 29. One counterexample starts in and ends in result=0, x=20. Annotation is valid for all loop-free paths from entry of procedure fibo to check that procedure precondition always holds at line 13. 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 fibo to exit of procedure fibo. Annotation is valid for all loop-free paths from entry of procedure main to check that procedure precondition always holds at line 27. 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 fibo to check that procedure precondition always holds at line 13. Annotation is valid for all loop-free paths from entry of procedure main to exit of procedure main. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.11ms. Allocated memory is still 138.4MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 138.4MB. Free memory is still 109.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.52ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 62.9MB in the beginning and 155.0MB in the end (delta: -92.1MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.47ms. Allocated memory is still 190.8MB. Free memory was 155.0MB in the beginning and 153.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.20ms. Allocated memory is still 190.8MB. Free memory was 153.7MB in the beginning and 138.3MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Referee took 303.49ms. Allocated memory is still 190.8MB. Free memory was 138.3MB in the beginning and 95.2MB in the end (delta: 43.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-09-21 19:11:58,627 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- 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