This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:11:15,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:11:15,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-13 10:11:15,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:11:15,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:11:15,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:11:15,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:11:15,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:11:15,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:11:15,488 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:11:15,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:11:15,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:11:15,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:11:15,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:11:15,490 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:11:15,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:11:15,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:11:15,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:11:15,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:11:15,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:11:15,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:11:15,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:11:15,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:11:15,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:11:15,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:11:15,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:11:15,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:11:15,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:11:15,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:11:15,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:11:15,499 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-13 10:11:15,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:11:15,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:11:15,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:11:15,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:11:15,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:11:15,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:11:15,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:11:15,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:11:15,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:11:15,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:11:15,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:11:15,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:11:15,502 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/referee/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:11:15,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:11:15,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:11:15,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:11:15,812 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:11:15,813 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:11:15,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-13 10:11:17,230 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:11:17,430 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:11:17,431 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-13 10:11:17,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/3db07909b/455e0fbb973548098ca34c8e74a7bad2/FLAG8c2bf4edc [2024-09-13 10:11:17,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/3db07909b/455e0fbb973548098ca34c8e74a7bad2 [2024-09-13 10:11:17,829 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:11:17,830 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:11:17,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_5-1.yml/witness-2.1.yml [2024-09-13 10:11:17,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:11:17,886 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-13 10:11:17,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:11:17,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:11:17,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:11:17,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:11:17" (1/2) ... [2024-09-13 10:11:17,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4d92cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:17, skipping insertion in model container [2024-09-13 10:11:17,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:11:17" (1/2) ... [2024-09-13 10:11:17,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c26faf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:11:17, skipping insertion in model container [2024-09-13 10:11:17,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:11:17" (2/2) ... [2024-09-13 10:11:17,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4d92cb and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:11:17, skipping insertion in model container [2024-09-13 10:11:17,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:11:17" (2/2) ... [2024-09-13 10:11:17,904 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:11:17,904 INFO L1541 ArrayList]: Function contract at [L19]: requires null, ensures (((((\result == 1) && (\old(n) == 1)) || (\result == 0)) || (2 < \old(n))) && ((((((2 == \result) && (3 == \old(n))) || ((\result == 1) && (\old(n) == 1))) || ((3 == \result) && (\old(n) == 4))) || (4 < \old(n))) || (\old(n) < 1))) [2024-09-13 10:11:17,907 INFO L1541 ArrayList]: Function contract at [L9]: requires null, ensures ((((\result == 0) || (1 < \old(n))) || (\old(n) == 1)) && ((\old(n) != 1) || (\result == 1))) [2024-09-13 10:11:17,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:11:18,081 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-simple/fibo_2calls_5-1.c[946,959] [2024-09-13 10:11:18,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:11:18,100 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 10:11:18,151 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-simple/fibo_2calls_5-1.c[946,959] [2024-09-13 10:11:18,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:11:18,169 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:11:18,170 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:11:18 WrapperNode [2024-09-13 10:11:18,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:11:18,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:11:18,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:11:18,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:11:18,185 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,185 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,195 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,207 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibo1 is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:11:18,207 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,207 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,214 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,216 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,216 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,217 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:11:18,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:11:18,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:11:18,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:11:18,223 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 13.09 10:11:18" (1/1) ... [2024-09-13 10:11:18,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:11:18,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-13 10:11:18,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:11:18,254 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:11:18,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 10:11:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:11:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-13 10:11:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-13 10:11:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-13 10:11:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 10:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-13 10:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-13 10:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-13 10:11:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-13 10:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-13 10:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-13 10:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 10:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 10:11:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:11:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:11:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-13 10:11:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-13 10:11:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 10:11:18,366 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:11:18,368 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:11:18,516 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:11:18,536 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:11:18,536 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:11:18,537 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:11:18 BoogieIcfgContainer [2024-09-13 10:11:18,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:11:18,541 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-13 10:11:18,541 INFO L270 PluginConnector]: Initializing Referee... [2024-09-13 10:11:18,542 INFO L274 PluginConnector]: Referee initialized [2024-09-13 10:11:18,542 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 13.09 10:11:17" (1/4) ... [2024-09-13 10:11:18,542 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@9d534f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 13.09 10:11:18, skipping insertion in model container [2024-09-13 10:11:18,543 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:11:17" (2/4) ... [2024-09-13 10:11:18,543 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@9d534f6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 13.09 10:11:18, skipping insertion in model container [2024-09-13 10:11:18,543 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 13.09 10:11:18" (3/4) ... [2024-09-13 10:11:18,543 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@9d534f6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 13.09 10:11:18, skipping insertion in model container [2024-09-13 10:11:18,544 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:11:18" (4/4) ... [2024-09-13 10:11:18,544 INFO L79 RefereeObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-09-13 10:11:18,547 INFO L112 InvariantChecker]: Found 0 loops. [2024-09-13 10:11:18,548 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-09-13 10:11:18,548 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibo2Err0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-13 10:11:18,548 INFO L367 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibo1Err0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-13 10:11:18,548 INFO L130 InvariantChecker]: Will check 3 loop-free subgraphs from procedure entry to error location [2024-09-13 10:11:18,587 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-13 10:11:18,588 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-13 10:11:18,588 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-13 10:11:18,589 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-13 10:11:18,590 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-13 10:11:18,592 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:18,606 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-13 10:11:18,608 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:18,608 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-13 10:11:18,609 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-13 10:11:18,611 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-13 10:11:18,612 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-13 10:11:18,657 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-13 10:11:18,658 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-13 10:11:18,658 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-13 10:11:18,658 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-13 10:11:18,658 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-13 10:11:18,658 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:18,694 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-13 10:11:18,696 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:18,697 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-13 10:11:18,697 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-13 10:11:18,697 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-13 10:11:18,707 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-13 10:11:18,724 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-13 10:11:18,727 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-13 10:11:18,727 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-13 10:11:18,727 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-13 10:11:18,727 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-13 10:11:18,727 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:18,750 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-09-13 10:11:18,753 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-13 10:11:18,753 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-13 10:11:18,753 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-13 10:11:18,753 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-13 10:11:18,759 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-13 10:11:18,764 INFO L514 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location fibo1Err0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-13 10:11:18,774 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-13 10:11:18,775 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@9d534f6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 13.09 10:11:18, skipping insertion in model container [2024-09-13 10:11:18,775 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-13 10:11:18,778 INFO L158 Benchmark]: Toolchain (without parser) took 890.36ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 71.5MB in the end (delta: 49.3MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-09-13 10:11:18,779 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 91.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:11:18,780 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 153.1MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:11:18,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.46ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 108.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:11:18,781 INFO L158 Benchmark]: Boogie Preprocessor took 49.07ms. Allocated memory is still 153.1MB. Free memory was 108.2MB in the beginning and 106.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:11:18,782 INFO L158 Benchmark]: RCFGBuilder took 319.47ms. Allocated memory is still 153.1MB. Free memory was 106.1MB in the beginning and 92.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:11:18,782 INFO L158 Benchmark]: Referee took 234.40ms. Allocated memory is still 153.1MB. Free memory was 92.5MB in the beginning and 71.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-09-13 10:11:18,786 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 41. One counterexample starts in and ends in result=0, x=5. Annotation is not valid for all loop-free paths from entry of procedure fibo2 to exit of procedure fibo2. One counterexample starts in \old(n)=4 and ends in \old(n)=4, \result=-2, n=4. Annotation is valid for all loop-free paths from entry of procedure fibo1 to exit of procedure fibo1. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 91.1MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 153.1MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.46ms. Allocated memory is still 153.1MB. Free memory was 120.8MB in the beginning and 108.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.07ms. Allocated memory is still 153.1MB. Free memory was 108.2MB in the beginning and 106.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.47ms. Allocated memory is still 153.1MB. Free memory was 106.1MB in the beginning and 92.5MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 234.40ms. Allocated memory is still 153.1MB. Free memory was 92.5MB in the beginning and 71.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-13 10:11:18,820 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...