This is Ultimate 0.2.4-dev-1d5fa63-m
[2024-09-13 10:27:48,195 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-09-13 10:27:48,262 INFO  L114        SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-13 10:27:48,268 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-09-13 10:27:48,269 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-13 10:27:48,298 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-13 10:27:48,299 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-13 10:27:48,299 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-13 10:27:48,300 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-13 10:27:48,300 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-09-13 10:27:48,300 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-13 10:27:48,301 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-13 10:27:48,301 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-13 10:27:48,302 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-09-13 10:27:48,302 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-09-13 10:27:48,302 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-13 10:27:48,303 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-09-13 10:27:48,303 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-09-13 10:27:48,303 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-09-13 10:27:48,304 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-09-13 10:27:48,307 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-09-13 10:27:48,308 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-09-13 10:27:48,308 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-13 10:27:48,308 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-09-13 10:27:48,308 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-09-13 10:27:48,309 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-09-13 10:27:48,309 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-09-13 10:27:48,309 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-09-13 10:27:48,309 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-13 10:27:48,310 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-09-13 10:27:48,310 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-09-13 10:27:48,310 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-09-13 10:27:48,311 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-13 10:27:48,311 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-13 10:27:48,311 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-09-13 10:27:48,312 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-13 10:27:48,312 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-09-13 10:27:48,312 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-13 10:27:48,313 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-13 10:27:48,313 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-13 10:27:48,313 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-09-13 10:27:48,314 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-13 10:27:48,314 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/automizer/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None
[2024-09-13 10:27:48,567 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-13 10:27:48,594 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-13 10:27:48,596 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-13 10:27:48,597 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-09-13 10:27:48,598 INFO  L274        PluginConnector]: CDTParser initialized
[2024-09-13 10:27:48,599 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c
[2024-09-13 10:27:50,038 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-09-13 10:27:50,237 INFO  L384              CDTParser]: Found 1 translation units.
[2024-09-13 10:27:50,238 INFO  L180              CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c
[2024-09-13 10:27:50,247 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/84332aa07/2bc378b9fd0d4a038db8415b15a79e51/FLAG5d4b1bf6e
[2024-09-13 10:27:50,267 INFO  L435              CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/84332aa07/2bc378b9fd0d4a038db8415b15a79e51
[2024-09-13 10:27:50,270 INFO  L270        PluginConnector]: Initializing Witness Parser...
[2024-09-13 10:27:50,271 INFO  L274        PluginConnector]: Witness Parser initialized
[2024-09-13 10:27:50,272 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_8-1.yml/witness-2.1.yml
[2024-09-13 10:27:50,325 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-13 10:27:50,326 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-09-13 10:27:50,329 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-13 10:27:50,329 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-13 10:27:50,334 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-13 10:27:50,334 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:27:50" (1/2) ...
[2024-09-13 10:27:50,337 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b66f2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:50, skipping insertion in model container
[2024-09-13 10:27:50,337 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:27:50" (1/2) ...
[2024-09-13 10:27:50,339 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ff2d331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:50, skipping insertion in model container
[2024-09-13 10:27:50,339 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 10:27:50" (2/2) ...
[2024-09-13 10:27:50,339 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b66f2ca and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:50, skipping insertion in model container
[2024-09-13 10:27:50,339 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 10:27:50" (2/2) ...
[2024-09-13 10:27:50,347 INFO  L93    nessWitnessExtractor]: Found the following entries in the witness:
[2024-09-13 10:27:50,350 INFO  L1541             ArrayList]: Function contract at [L19]: requires null, ensures (((((\old(n) < 6) || (\result == 13)) || (7 < \old(n))) && (((\result == 0) || (\old(n) == 1)) || (1 < \old(n)))) && (((\result == 1) || (\old(n) < 1)) || (3 < \old(n))))
[2024-09-13 10:27:50,350 INFO  L1541             ArrayList]: Function contract at [L9]: requires null, ensures (((((((((2 == \result) || (\old(n) < 2)) || (\old(n) == 4)) || (5 < \old(n))) && (((\old(n) < 4) || (3 == \result)) || (5 < \old(n)))) && ((((\old(n) < 4) || (\old(n) == 4)) || (8 == \result)) || (6 < \old(n)))) && ((\old(n) != 1) || (\result == 1))) && (((\result == 0) || ((\old(n) == 1) && (\result == 1))) || (2 < \old(n)))) && ((21 == \result) || (\old(n) != 8)))
[2024-09-13 10:27:50,368 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-09-13 10:27:50,534 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_8-1.c[947,960]
[2024-09-13 10:27:50,547 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-09-13 10:27:50,558 INFO  L200         MainTranslator]: Completed pre-run
Start Parsing Global
Start Parsing Global
[2024-09-13 10:27:50,610 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_8-1.c[947,960]
[2024-09-13 10:27:50,611 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-09-13 10:27:50,626 INFO  L204         MainTranslator]: Completed translation
[2024-09-13 10:27:50,627 INFO  L201        PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:50 WrapperNode
[2024-09-13 10:27:50,628 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-13 10:27:50,629 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-13 10:27:50,629 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-13 10:27:50,629 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-13 10:27:50,635 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:50" (1/1) ...
[2024-09-13 10:27:50,641 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:50" (1/1) ...
[2024-09-13 10:27:50,657 INFO  L138                Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20
[2024-09-13 10:27:50,658 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-13 10:27:50,658 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-13 10:27:50,659 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-13 10:27:50,659 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-09-13 10:27:50,668 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,668 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,670 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,684 WARN  L109           MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibo2 is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification
[2024-09-13 10:27:50,684 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,685 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,688 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,690 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,691 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,692 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,693 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-13 10:27:50,694 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-13 10:27:50,694 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-09-13 10:27:50,695 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-09-13 10:27:50,695 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 10:27:50" (1/1) ...
[2024-09-13 10:27:50,700 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-13 10:27:50,706 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:50,721 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-09-13 10:27:50,726 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-09-13 10:27:50,770 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-13 10:27:50,770 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2024-09-13 10:27:50,770 INFO  L130     BoogieDeclarations]: Found specification of procedure fibo2
[2024-09-13 10:27:50,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure fibo2
[2024-09-13 10:27:50,771 INFO  L130     BoogieDeclarations]: Found specification of procedure fibo1
[2024-09-13 10:27:50,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure fibo1
[2024-09-13 10:27:50,771 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-13 10:27:50,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-13 10:27:50,834 INFO  L242             CfgBuilder]: Building ICFG
[2024-09-13 10:27:50,836 INFO  L268             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-13 10:27:51,062 INFO  L?                        ?]: Removed 13 outVars from TransFormulas that were not future-live.
[2024-09-13 10:27:51,064 INFO  L291             CfgBuilder]: Performing block encoding
[2024-09-13 10:27:51,092 INFO  L313             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-13 10:27:51,093 INFO  L318             CfgBuilder]: Removed 0 assume(true) statements.
[2024-09-13 10:27:51,093 INFO  L201        PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:27:51 BoogieIcfgContainer
[2024-09-13 10:27:51,094 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-13 10:27:51,097 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-13 10:27:51,097 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-09-13 10:27:51,101 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-09-13 10:27:51,102 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:27:50" (1/4) ...
[2024-09-13 10:27:51,104 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3218e299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:27:51, skipping insertion in model container
[2024-09-13 10:27:51,104 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:27:50" (2/4) ...
[2024-09-13 10:27:51,105 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3218e299 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:27:51, skipping insertion in model container
[2024-09-13 10:27:51,105 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:50" (3/4) ...
[2024-09-13 10:27:51,105 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3218e299 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:27:51, skipping insertion in model container
[2024-09-13 10:27:51,106 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:27:51" (4/4) ...
[2024-09-13 10:27:51,107 INFO  L112   eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c
[2024-09-13 10:27:51,127 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-13 10:27:51,127 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2024-09-13 10:27:51,187 INFO  L335      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-13 10:27:51,196 INFO  L336      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1685d022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-13 10:27:51,196 INFO  L337      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-09-13 10:27:51,201 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 28 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-09-13 10:27:51,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-09-13 10:27:51,213 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:51,214 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-09-13 10:27:51,218 INFO  L399      AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:51,223 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:51,225 INFO  L85        PathProgramCache]: Analyzing trace with hash 83656213, now seen corresponding path program 1 times
[2024-09-13 10:27:51,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:51,236 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773754275]
[2024-09-13 10:27:51,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:51,236 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:51,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:51,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:51,481 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:51,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773754275]
[2024-09-13 10:27:51,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773754275] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:51,482 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:27:51,482 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-09-13 10:27:51,483 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418925376]
[2024-09-13 10:27:51,484 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:51,488 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-13 10:27:51,488 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:51,517 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-13 10:27:51,518 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-13 10:27:51,520 INFO  L87              Difference]: Start difference. First operand  has 28 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:51,637 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:51,637 INFO  L93              Difference]: Finished difference Result 38 states and 45 transitions.
[2024-09-13 10:27:51,639 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-09-13 10:27:51,640 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-09-13 10:27:51,640 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:51,646 INFO  L225             Difference]: With dead ends: 38
[2024-09-13 10:27:51,647 INFO  L226             Difference]: Without dead ends: 36
[2024-09-13 10:27:51,649 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-09-13 10:27:51,655 INFO  L434           NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:51,656 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 103 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-13 10:27:51,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-09-13 10:27:51,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35.
[2024-09-13 10:27:51,684 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-09-13 10:27:51,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions.
[2024-09-13 10:27:51,686 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 5
[2024-09-13 10:27:51,686 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:51,686 INFO  L474      AbstractCegarLoop]: Abstraction has 35 states and 43 transitions.
[2024-09-13 10:27:51,687 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:51,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions.
[2024-09-13 10:27:51,687 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-09-13 10:27:51,687 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:51,687 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:51,688 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-13 10:27:51,688 INFO  L399      AbstractCegarLoop]: === Iteration 2 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:51,688 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:51,688 INFO  L85        PathProgramCache]: Analyzing trace with hash 422480245, now seen corresponding path program 1 times
[2024-09-13 10:27:51,689 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:51,689 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946536150]
[2024-09-13 10:27:51,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:51,689 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:51,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:51,791 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:51,791 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:51,791 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946536150]
[2024-09-13 10:27:51,792 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946536150] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:51,792 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:27:51,792 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-09-13 10:27:51,793 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484657224]
[2024-09-13 10:27:51,793 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:51,794 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-09-13 10:27:51,794 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:51,795 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-09-13 10:27:51,795 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-09-13 10:27:51,795 INFO  L87              Difference]: Start difference. First operand 35 states and 43 transitions. Second operand  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:51,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:51,891 INFO  L93              Difference]: Finished difference Result 54 states and 69 transitions.
[2024-09-13 10:27:51,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-09-13 10:27:51,893 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2024-09-13 10:27:51,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:51,895 INFO  L225             Difference]: With dead ends: 54
[2024-09-13 10:27:51,895 INFO  L226             Difference]: Without dead ends: 54
[2024-09-13 10:27:51,896 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-09-13 10:27:51,898 INFO  L434           NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:51,899 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 91 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-13 10:27:51,901 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2024-09-13 10:27:51,912 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44.
[2024-09-13 10:27:51,913 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-09-13 10:27:51,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions.
[2024-09-13 10:27:51,917 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 9
[2024-09-13 10:27:51,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:51,918 INFO  L474      AbstractCegarLoop]: Abstraction has 44 states and 55 transitions.
[2024-09-13 10:27:51,918 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:51,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions.
[2024-09-13 10:27:51,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-09-13 10:27:51,919 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:51,919 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:51,919 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-09-13 10:27:51,919 INFO  L399      AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:51,920 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:51,920 INFO  L85        PathProgramCache]: Analyzing trace with hash 211986483, now seen corresponding path program 1 times
[2024-09-13 10:27:51,920 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:51,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327365817]
[2024-09-13 10:27:51,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:51,923 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:51,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:52,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:52,037 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:52,038 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327365817]
[2024-09-13 10:27:52,038 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327365817] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:52,038 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:27:52,038 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-09-13 10:27:52,038 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276323603]
[2024-09-13 10:27:52,038 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:52,039 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-09-13 10:27:52,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:52,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-09-13 10:27:52,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2024-09-13 10:27:52,040 INFO  L87              Difference]: Start difference. First operand 44 states and 55 transitions. Second operand  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:52,149 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:52,150 INFO  L93              Difference]: Finished difference Result 55 states and 66 transitions.
[2024-09-13 10:27:52,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-09-13 10:27:52,151 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2024-09-13 10:27:52,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:52,152 INFO  L225             Difference]: With dead ends: 55
[2024-09-13 10:27:52,152 INFO  L226             Difference]: Without dead ends: 55
[2024-09-13 10:27:52,152 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2024-09-13 10:27:52,153 INFO  L434           NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:52,154 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 149 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-13 10:27:52,155 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2024-09-13 10:27:52,161 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53.
[2024-09-13 10:27:52,162 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 53 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 36 states have internal predecessors, (44), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2024-09-13 10:27:52,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions.
[2024-09-13 10:27:52,163 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 10
[2024-09-13 10:27:52,163 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:52,163 INFO  L474      AbstractCegarLoop]: Abstraction has 53 states and 66 transitions.
[2024-09-13 10:27:52,164 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:52,164 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions.
[2024-09-13 10:27:52,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-09-13 10:27:52,164 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:52,164 INFO  L216           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:52,164 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-09-13 10:27:52,165 INFO  L399      AbstractCegarLoop]: === Iteration 4 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:52,165 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:52,165 INFO  L85        PathProgramCache]: Analyzing trace with hash 1688882568, now seen corresponding path program 1 times
[2024-09-13 10:27:52,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:52,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869297384]
[2024-09-13 10:27:52,166 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:52,166 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:52,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:52,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:52,248 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:52,248 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869297384]
[2024-09-13 10:27:52,248 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869297384] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:52,248 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:27:52,248 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-09-13 10:27:52,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761579543]
[2024-09-13 10:27:52,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:52,249 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-09-13 10:27:52,249 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:52,250 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-09-13 10:27:52,250 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2024-09-13 10:27:52,250 INFO  L87              Difference]: Start difference. First operand 53 states and 66 transitions. Second operand  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:52,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:52,320 INFO  L93              Difference]: Finished difference Result 74 states and 97 transitions.
[2024-09-13 10:27:52,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-09-13 10:27:52,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-09-13 10:27:52,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:52,322 INFO  L225             Difference]: With dead ends: 74
[2024-09-13 10:27:52,323 INFO  L226             Difference]: Without dead ends: 74
[2024-09-13 10:27:52,323 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2024-09-13 10:27:52,324 INFO  L434           NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:52,324 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 99 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-13 10:27:52,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2024-09-13 10:27:52,332 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62.
[2024-09-13 10:27:52,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-09-13 10:27:52,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions.
[2024-09-13 10:27:52,334 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 13
[2024-09-13 10:27:52,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:52,334 INFO  L474      AbstractCegarLoop]: Abstraction has 62 states and 78 transitions.
[2024-09-13 10:27:52,335 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:52,335 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions.
[2024-09-13 10:27:52,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-09-13 10:27:52,335 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:52,336 INFO  L216           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:52,336 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-09-13 10:27:52,336 INFO  L399      AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:52,337 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:52,337 INFO  L85        PathProgramCache]: Analyzing trace with hash 815752847, now seen corresponding path program 1 times
[2024-09-13 10:27:52,337 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:52,337 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083810006]
[2024-09-13 10:27:52,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:52,338 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:52,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:52,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:52,481 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:52,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083810006]
[2024-09-13 10:27:52,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083810006] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:27:52,482 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190519734]
[2024-09-13 10:27:52,482 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:52,484 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:52,484 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:52,487 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:27:52,506 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-13 10:27:52,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:52,546 INFO  L262         TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-09-13 10:27:52,551 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:27:52,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:52,606 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-13 10:27:52,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:52,711 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [190519734] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-13 10:27:52,711 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-13 10:27:52,711 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15
[2024-09-13 10:27:52,711 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735889847]
[2024-09-13 10:27:52,711 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-13 10:27:52,711 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-09-13 10:27:52,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:52,712 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-09-13 10:27:52,712 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240
[2024-09-13 10:27:52,713 INFO  L87              Difference]: Start difference. First operand 62 states and 78 transitions. Second operand  has 16 states, 14 states have (on average 1.5) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:53,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:53,036 INFO  L93              Difference]: Finished difference Result 113 states and 133 transitions.
[2024-09-13 10:27:53,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-09-13 10:27:53,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 14 states have (on average 1.5) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-09-13 10:27:53,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:53,038 INFO  L225             Difference]: With dead ends: 113
[2024-09-13 10:27:53,038 INFO  L226             Difference]: Without dead ends: 113
[2024-09-13 10:27:53,039 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462
[2024-09-13 10:27:53,040 INFO  L434           NwaCegarLoop]: 37 mSDtfsCounter, 88 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:53,040 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 309 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-09-13 10:27:53,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2024-09-13 10:27:53,054 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107.
[2024-09-13 10:27:53,057 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-09-13 10:27:53,059 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 133 transitions.
[2024-09-13 10:27:53,059 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 133 transitions. Word has length 14
[2024-09-13 10:27:53,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:53,060 INFO  L474      AbstractCegarLoop]: Abstraction has 107 states and 133 transitions.
[2024-09-13 10:27:53,060 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 14 states have (on average 1.5) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:53,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 133 transitions.
[2024-09-13 10:27:53,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2024-09-13 10:27:53,061 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:53,061 INFO  L216           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1]
[2024-09-13 10:27:53,075 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-13 10:27:53,261 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:53,262 INFO  L399      AbstractCegarLoop]: === Iteration 6 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:53,262 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:53,263 INFO  L85        PathProgramCache]: Analyzing trace with hash 2123869197, now seen corresponding path program 1 times
[2024-09-13 10:27:53,263 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:53,263 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816845553]
[2024-09-13 10:27:53,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:53,263 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:53,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:53,463 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:53,463 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:53,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816845553]
[2024-09-13 10:27:53,463 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816845553] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:27:53,463 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663183037]
[2024-09-13 10:27:53,464 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:53,464 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:53,464 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:53,466 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:27:53,468 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-13 10:27:53,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:53,509 INFO  L262         TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-09-13 10:27:53,510 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:27:53,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:53,591 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-13 10:27:53,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:53,812 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663183037] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-13 10:27:53,812 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-13 10:27:53,812 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27
[2024-09-13 10:27:53,813 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395408828]
[2024-09-13 10:27:53,813 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-13 10:27:53,813 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2024-09-13 10:27:53,813 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:53,814 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2024-09-13 10:27:53,815 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756
[2024-09-13 10:27:53,815 INFO  L87              Difference]: Start difference. First operand 107 states and 133 transitions. Second operand  has 28 states, 26 states have (on average 1.5) internal successors, (39), 15 states have internal predecessors, (39), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:54,371 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:54,371 INFO  L93              Difference]: Finished difference Result 226 states and 265 transitions.
[2024-09-13 10:27:54,372 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2024-09-13 10:27:54,372 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 26 states have (on average 1.5) internal successors, (39), 15 states have internal predecessors, (39), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26
[2024-09-13 10:27:54,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:54,374 INFO  L225             Difference]: With dead ends: 226
[2024-09-13 10:27:54,374 INFO  L226             Difference]: Without dead ends: 226
[2024-09-13 10:27:54,374 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1503, Unknown=0, NotChecked=0, Total=1806
[2024-09-13 10:27:54,379 INFO  L434           NwaCegarLoop]: 39 mSDtfsCounter, 194 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:54,380 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 413 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-09-13 10:27:54,381 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 226 states.
[2024-09-13 10:27:54,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 215.
[2024-09-13 10:27:54,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 215 states, 142 states have (on average 1.204225352112676) internal successors, (171), 144 states have internal predecessors, (171), 47 states have call successors, (47), 23 states have call predecessors, (47), 23 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47)
[2024-09-13 10:27:54,408 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 265 transitions.
[2024-09-13 10:27:54,411 INFO  L78                 Accepts]: Start accepts. Automaton has 215 states and 265 transitions. Word has length 26
[2024-09-13 10:27:54,411 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:54,411 INFO  L474      AbstractCegarLoop]: Abstraction has 215 states and 265 transitions.
[2024-09-13 10:27:54,411 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 26 states have (on average 1.5) internal successors, (39), 15 states have internal predecessors, (39), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:54,412 INFO  L276                IsEmpty]: Start isEmpty. Operand 215 states and 265 transitions.
[2024-09-13 10:27:54,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-09-13 10:27:54,412 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:54,412 INFO  L216           NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1]
[2024-09-13 10:27:54,430 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-09-13 10:27:54,613 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-09-13 10:27:54,614 INFO  L399      AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:54,614 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:54,614 INFO  L85        PathProgramCache]: Analyzing trace with hash -698684055, now seen corresponding path program 2 times
[2024-09-13 10:27:54,614 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:54,614 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587511761]
[2024-09-13 10:27:54,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:54,615 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:54,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:54,836 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:54,836 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:54,836 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587511761]
[2024-09-13 10:27:54,837 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587511761] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:27:54,837 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165971262]
[2024-09-13 10:27:54,837 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-13 10:27:54,837 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:54,837 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:54,839 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:27:54,840 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-09-13 10:27:54,878 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-09-13 10:27:54,878 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-13 10:27:54,880 INFO  L262         TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-09-13 10:27:54,882 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:27:54,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2024-09-13 10:27:54,949 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-13 10:27:54,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [165971262] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:54,949 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-13 10:27:54,949 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 20
[2024-09-13 10:27:54,949 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512747720]
[2024-09-13 10:27:54,950 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:54,950 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-13 10:27:54,950 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:54,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-13 10:27:54,951 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380
[2024-09-13 10:27:54,951 INFO  L87              Difference]: Start difference. First operand 215 states and 265 transitions. Second operand  has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:54,999 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:55,000 INFO  L93              Difference]: Finished difference Result 222 states and 293 transitions.
[2024-09-13 10:27:55,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-09-13 10:27:55,000 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2024-09-13 10:27:55,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:55,002 INFO  L225             Difference]: With dead ends: 222
[2024-09-13 10:27:55,002 INFO  L226             Difference]: Without dead ends: 222
[2024-09-13 10:27:55,003 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380
[2024-09-13 10:27:55,004 INFO  L434           NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:55,004 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:27:55,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222 states.
[2024-09-13 10:27:55,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 217.
[2024-09-13 10:27:55,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 217 states, 144 states have (on average 1.2013888888888888) internal successors, (173), 146 states have internal predecessors, (173), 47 states have call successors, (47), 23 states have call predecessors, (47), 23 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47)
[2024-09-13 10:27:55,026 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 267 transitions.
[2024-09-13 10:27:55,027 INFO  L78                 Accepts]: Start accepts. Automaton has 217 states and 267 transitions. Word has length 30
[2024-09-13 10:27:55,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:55,027 INFO  L474      AbstractCegarLoop]: Abstraction has 217 states and 267 transitions.
[2024-09-13 10:27:55,027 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:55,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 217 states and 267 transitions.
[2024-09-13 10:27:55,028 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2024-09-13 10:27:55,028 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:55,028 INFO  L216           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1]
[2024-09-13 10:27:55,043 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-09-13 10:27:55,229 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2024-09-13 10:27:55,229 INFO  L399      AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:55,230 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:55,230 INFO  L85        PathProgramCache]: Analyzing trace with hash 755241594, now seen corresponding path program 2 times
[2024-09-13 10:27:55,230 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:55,230 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078404134]
[2024-09-13 10:27:55,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:55,230 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:55,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:55,665 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:55,666 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:55,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078404134]
[2024-09-13 10:27:55,666 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078404134] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:27:55,666 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543553839]
[2024-09-13 10:27:55,666 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-13 10:27:55,666 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:55,667 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:55,671 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:27:55,673 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-09-13 10:27:55,715 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-09-13 10:27:55,715 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-13 10:27:55,716 INFO  L262         TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-09-13 10:27:55,718 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:27:55,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2024-09-13 10:27:55,742 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-13 10:27:55,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543553839] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:55,743 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-13 10:27:55,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [19] total 21
[2024-09-13 10:27:55,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553087192]
[2024-09-13 10:27:55,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:55,743 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 10:27:55,743 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:55,744 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 10:27:55,744 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462
[2024-09-13 10:27:55,744 INFO  L87              Difference]: Start difference. First operand 217 states and 267 transitions. Second operand  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:55,779 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:55,780 INFO  L93              Difference]: Finished difference Result 224 states and 283 transitions.
[2024-09-13 10:27:55,780 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-09-13 10:27:55,780 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2024-09-13 10:27:55,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:55,782 INFO  L225             Difference]: With dead ends: 224
[2024-09-13 10:27:55,782 INFO  L226             Difference]: Without dead ends: 224
[2024-09-13 10:27:55,782 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462
[2024-09-13 10:27:55,783 INFO  L434           NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:55,783 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 59 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:27:55,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 224 states.
[2024-09-13 10:27:55,795 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219.
[2024-09-13 10:27:55,796 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 219 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 148 states have internal predecessors, (175), 47 states have call successors, (47), 23 states have call predecessors, (47), 23 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47)
[2024-09-13 10:27:55,797 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 269 transitions.
[2024-09-13 10:27:55,800 INFO  L78                 Accepts]: Start accepts. Automaton has 219 states and 269 transitions. Word has length 34
[2024-09-13 10:27:55,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:55,801 INFO  L474      AbstractCegarLoop]: Abstraction has 219 states and 269 transitions.
[2024-09-13 10:27:55,801 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 10:27:55,801 INFO  L276                IsEmpty]: Start isEmpty. Operand 219 states and 269 transitions.
[2024-09-13 10:27:55,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-09-13 10:27:55,802 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:55,802 INFO  L216           NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:55,818 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-09-13 10:27:56,002 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:56,002 INFO  L399      AbstractCegarLoop]: === Iteration 9 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:56,003 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:56,003 INFO  L85        PathProgramCache]: Analyzing trace with hash 635903209, now seen corresponding path program 1 times
[2024-09-13 10:27:56,003 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:56,003 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477532420]
[2024-09-13 10:27:56,003 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:56,003 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:56,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:56,199 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2024-09-13 10:27:56,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:56,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:56,237 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:56,237 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477532420]
[2024-09-13 10:27:56,237 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477532420] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:27:56,237 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869532846]
[2024-09-13 10:27:56,237 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:56,238 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:56,238 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:56,239 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:27:56,241 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-09-13 10:27:56,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:56,288 INFO  L262         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-09-13 10:27:56,289 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:27:56,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:56,357 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-13 10:27:56,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 10:27:56,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869532846] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-13 10:27:56,557 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-13 10:27:56,557 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19
[2024-09-13 10:27:56,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326730744]
[2024-09-13 10:27:56,557 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-13 10:27:56,558 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-09-13 10:27:56,558 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:56,559 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-09-13 10:27:56,559 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342
[2024-09-13 10:27:56,559 INFO  L87              Difference]: Start difference. First operand 219 states and 269 transitions. Second operand  has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (8), 8 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:27:56,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:56,868 INFO  L93              Difference]: Finished difference Result 238 states and 297 transitions.
[2024-09-13 10:27:56,868 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2024-09-13 10:27:56,868 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (8), 8 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2024-09-13 10:27:56,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:56,870 INFO  L225             Difference]: With dead ends: 238
[2024-09-13 10:27:56,870 INFO  L226             Difference]: Without dead ends: 238
[2024-09-13 10:27:56,871 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600
[2024-09-13 10:27:56,871 INFO  L434           NwaCegarLoop]: 34 mSDtfsCounter, 97 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:56,871 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 247 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-09-13 10:27:56,872 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 238 states.
[2024-09-13 10:27:56,879 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 229.
[2024-09-13 10:27:56,880 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 229 states, 152 states have (on average 1.1973684210526316) internal successors, (182), 155 states have internal predecessors, (182), 49 states have call successors, (49), 24 states have call predecessors, (49), 25 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54)
[2024-09-13 10:27:56,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 285 transitions.
[2024-09-13 10:27:56,882 INFO  L78                 Accepts]: Start accepts. Automaton has 229 states and 285 transitions. Word has length 36
[2024-09-13 10:27:56,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:56,882 INFO  L474      AbstractCegarLoop]: Abstraction has 229 states and 285 transitions.
[2024-09-13 10:27:56,882 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (8), 8 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:27:56,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 229 states and 285 transitions.
[2024-09-13 10:27:56,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2024-09-13 10:27:56,883 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:56,883 INFO  L216           NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:56,900 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-09-13 10:27:57,086 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:57,087 INFO  L399      AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:57,088 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:57,088 INFO  L85        PathProgramCache]: Analyzing trace with hash -346895470, now seen corresponding path program 1 times
[2024-09-13 10:27:57,088 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:57,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658130392]
[2024-09-13 10:27:57,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:57,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:57,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:57,153 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2024-09-13 10:27:57,154 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:57,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2024-09-13 10:27:57,157 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:57,157 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658130392]
[2024-09-13 10:27:57,157 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658130392] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:57,157 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 10:27:57,157 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-09-13 10:27:57,157 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099097046]
[2024-09-13 10:27:57,158 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:57,158 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 10:27:57,158 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:57,159 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 10:27:57,159 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:27:57,159 INFO  L87              Difference]: Start difference. First operand 229 states and 285 transitions. Second operand  has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:27:57,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:57,192 INFO  L93              Difference]: Finished difference Result 233 states and 298 transitions.
[2024-09-13 10:27:57,194 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-09-13 10:27:57,194 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40
[2024-09-13 10:27:57,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:57,195 INFO  L225             Difference]: With dead ends: 233
[2024-09-13 10:27:57,196 INFO  L226             Difference]: Without dead ends: 233
[2024-09-13 10:27:57,196 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-09-13 10:27:57,196 INFO  L434           NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:57,197 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 60 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 10:27:57,200 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2024-09-13 10:27:57,211 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229.
[2024-09-13 10:27:57,214 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 229 states, 152 states have (on average 1.1973684210526316) internal successors, (182), 155 states have internal predecessors, (182), 49 states have call successors, (49), 24 states have call predecessors, (49), 25 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54)
[2024-09-13 10:27:57,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 285 transitions.
[2024-09-13 10:27:57,216 INFO  L78                 Accepts]: Start accepts. Automaton has 229 states and 285 transitions. Word has length 40
[2024-09-13 10:27:57,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:57,217 INFO  L474      AbstractCegarLoop]: Abstraction has 229 states and 285 transitions.
[2024-09-13 10:27:57,217 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-13 10:27:57,217 INFO  L276                IsEmpty]: Start isEmpty. Operand 229 states and 285 transitions.
[2024-09-13 10:27:57,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2024-09-13 10:27:57,220 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:57,220 INFO  L216           NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:57,220 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-09-13 10:27:57,221 INFO  L399      AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:57,221 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:57,221 INFO  L85        PathProgramCache]: Analyzing trace with hash 557955997, now seen corresponding path program 1 times
[2024-09-13 10:27:57,221 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:57,221 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668427855]
[2024-09-13 10:27:57,221 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:57,221 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:57,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:57,498 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2024-09-13 10:27:57,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:57,509 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2024-09-13 10:27:57,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:57,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 88 backedges. 64 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-13 10:27:57,513 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 10:27:57,513 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668427855]
[2024-09-13 10:27:57,513 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668427855] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-13 10:27:57,513 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715658502]
[2024-09-13 10:27:57,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:57,513 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 10:27:57,517 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 10:27:57,522 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 10:27:57,538 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-09-13 10:27:57,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 10:27:57,580 INFO  L262         TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-09-13 10:27:57,582 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 10:27:57,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 88 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-13 10:27:57,668 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-13 10:27:57,668 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [715658502] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 10:27:57,668 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-13 10:27:57,669 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [20] total 22
[2024-09-13 10:27:57,669 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368194977]
[2024-09-13 10:27:57,669 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 10:27:57,669 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-09-13 10:27:57,671 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 10:27:57,672 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-09-13 10:27:57,672 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462
[2024-09-13 10:27:57,672 INFO  L87              Difference]: Start difference. First operand 229 states and 285 transitions. Second operand  has 21 states, 20 states have (on average 1.8) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (11), 10 states have call predecessors, (11), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-13 10:27:58,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 10:27:58,008 INFO  L93              Difference]: Finished difference Result 277 states and 347 transitions.
[2024-09-13 10:27:58,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2024-09-13 10:27:58,009 INFO  L78                 Accepts]: Start accepts. Automaton has  has 21 states, 20 states have (on average 1.8) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (11), 10 states have call predecessors, (11), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51
[2024-09-13 10:27:58,009 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 10:27:58,011 INFO  L225             Difference]: With dead ends: 277
[2024-09-13 10:27:58,011 INFO  L226             Difference]: Without dead ends: 273
[2024-09-13 10:27:58,013 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992
[2024-09-13 10:27:58,013 INFO  L434           NwaCegarLoop]: 18 mSDtfsCounter, 154 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-09-13 10:27:58,014 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 136 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-09-13 10:27:58,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2024-09-13 10:27:58,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 259.
[2024-09-13 10:27:58,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 259 states, 174 states have (on average 1.206896551724138) internal successors, (210), 177 states have internal predecessors, (210), 53 states have call successors, (53), 28 states have call predecessors, (53), 29 states have return successors, (57), 53 states have call predecessors, (57), 53 states have call successors, (57)
[2024-09-13 10:27:58,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions.
[2024-09-13 10:27:58,027 INFO  L78                 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 51
[2024-09-13 10:27:58,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 10:27:58,028 INFO  L474      AbstractCegarLoop]: Abstraction has 259 states and 320 transitions.
[2024-09-13 10:27:58,028 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 20 states have (on average 1.8) internal successors, (36), 11 states have internal predecessors, (36), 10 states have call successors, (11), 10 states have call predecessors, (11), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-13 10:27:58,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions.
[2024-09-13 10:27:58,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2024-09-13 10:27:58,030 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 10:27:58,031 INFO  L216           NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:58,048 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-09-13 10:27:58,235 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-09-13 10:27:58,236 INFO  L399      AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-13 10:27:58,236 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 10:27:58,236 INFO  L85        PathProgramCache]: Analyzing trace with hash -671606166, now seen corresponding path program 2 times
[2024-09-13 10:27:58,236 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 10:27:58,237 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119480724]
[2024-09-13 10:27:58,237 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 10:27:58,237 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 10:27:58,248 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-13 10:27:58,248 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-09-13 10:27:58,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-13 10:27:58,276 INFO  L130   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-09-13 10:27:58,277 INFO  L326         BasicCegarLoop]: Counterexample is feasible
[2024-09-13 10:27:58,278 INFO  L785   garLoopResultBuilder]: Registering result UNSAFE for location fibo1Err0ENSURES_VIOLATIONPOST_CONDITION (2 of 3 remaining)
[2024-09-13 10:27:58,279 INFO  L785   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining)
[2024-09-13 10:27:58,280 INFO  L785   garLoopResultBuilder]: Registering result UNKNOWN for location fibo2Err0ENSURES_VIOLATIONPOST_CONDITION (0 of 3 remaining)
[2024-09-13 10:27:58,280 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-09-13 10:27:58,282 INFO  L408         BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-09-13 10:27:58,304 INFO  L165   ceAbstractionStarter]: Computing trace abstraction results
[2024-09-13 10:27:58,306 INFO  L201        PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:27:58 BoogieIcfgContainer
[2024-09-13 10:27:58,306 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-13 10:27:58,307 INFO  L158              Benchmark]: Toolchain (without parser) took 7980.79ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 88.9MB in the beginning and 130.2MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:27:58,307 INFO  L158              Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:27:58,307 INFO  L158              Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:27:58,307 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 299.23ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 75.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-09-13 10:27:58,308 INFO  L158              Benchmark]: Boogie Procedure Inliner took 28.58ms. Allocated memory is still 159.4MB. Free memory was 75.5MB in the beginning and 73.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-13 10:27:58,308 INFO  L158              Benchmark]: Boogie Preprocessor took 35.10ms. Allocated memory is still 159.4MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 10:27:58,308 INFO  L158              Benchmark]: RCFGBuilder took 399.43ms. Allocated memory is still 159.4MB. Free memory was 72.3MB in the beginning and 126.6MB in the end (delta: -54.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-09-13 10:27:58,309 INFO  L158              Benchmark]: TraceAbstraction took 7209.49ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 125.8MB in the beginning and 130.2MB in the end (delta: -4.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB.
[2024-09-13 10:27:58,310 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB.
 * Witness Parser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 299.23ms. Allocated memory is still 159.4MB. Free memory was 88.5MB in the beginning and 75.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 28.58ms. Allocated memory is still 159.4MB. Free memory was 75.5MB in the beginning and 73.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 35.10ms. Allocated memory is still 159.4MB. Free memory was 73.9MB in the beginning and 72.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
 * RCFGBuilder took 399.43ms. Allocated memory is still 159.4MB. Free memory was 72.3MB in the beginning and 126.6MB in the end (delta: -54.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
 * TraceAbstraction took 7209.49ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 125.8MB in the beginning and 130.2MB in the end (delta: -4.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 9]: procedure postcondition can be violated
    procedure postcondition can be violated
We found a FailurePath: 
[L38]              int x = 8;
       VAL         [x=8]
[L39]  CALL        fibo1(x)
       VAL         [\old(n)=8]
[L10]  COND FALSE  !(n < 1)
       VAL         [\old(n)=8, n=8]
[L12]  COND FALSE  !(n == 1)
       VAL         [\old(n)=8, n=8]
[L15]  CALL, EXPR  fibo2(n-1)
       VAL         [\old(n)=7]
[L20]  COND FALSE  !(n < 1)
       VAL         [\old(n)=7, n=7]
[L22]  COND FALSE  !(n == 1)
       VAL         [\old(n)=7, n=7]
[L25]  CALL        fibo1(n-1)
       VAL         [\old(n)=6]
[L10]  COND FALSE  !(n < 1)
       VAL         [\old(n)=6, n=6]
[L12]  COND FALSE  !(n == 1)
       VAL         [\old(n)=6, n=6]
[L15]  CALL, EXPR  fibo2(n-1)
       VAL         [\old(n)=5]
[L20]  COND FALSE  !(n < 1)
       VAL         [\old(n)=5, n=5]
[L22]  COND FALSE  !(n == 1)
       VAL         [\old(n)=5, n=5]
[L25]  CALL        fibo1(n-1)
       VAL         [\old(n)=4]
[L10]  COND FALSE  !(n < 1)
       VAL         [\old(n)=4, n=4]
[L12]  COND FALSE  !(n == 1)
       VAL         [\old(n)=4, n=4]
[L15]  CALL, EXPR  fibo2(n-1)
       VAL         [\old(n)=3]
[L20]  COND FALSE  !(n < 1)
       VAL         [\old(n)=3, n=3]
[L22]  COND FALSE  !(n == 1)
       VAL         [\old(n)=3, n=3]
[L25]  CALL        fibo1(n-1)
       VAL         [\old(n)=2]
[L10]  COND FALSE  !(n < 1)
       VAL         [\old(n)=2, n=2]
[L12]  COND FALSE  !(n == 1)
       VAL         [\old(n)=2, n=2]
[L15]  CALL, EXPR  fibo2(n-1)
       VAL         [\old(n)=1]
[L20]  COND FALSE  !(n < 1)
       VAL         [\old(n)=1, n=1]
[L22]  COND TRUE   n == 1
[L23]              return 1;
       VAL         [\old(n)=1, \result=1]
[L15]  RET, EXPR   fibo2(n-1)
       VAL         [\old(n)=2, n=2]
[L15]  CALL, EXPR  fibo2(n-2)
       VAL         [\old(n)=0]
[L20]  COND TRUE   n < 1
[L21]              return 0;
       VAL         [\old(n)=0, \result=0]
[L15]  RET, EXPR   fibo2(n-2)
       VAL         [\old(n)=2, n=2]
[L15]              return fibo2(n-1) + fibo2(n-2);

  - UnprovableResult [Line: 41]: Unable to prove that a call to reach_error is unreachable
    Unable to prove that a call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 19]: Unable to prove that procedure postcondition always holds
    Unable to prove that procedure postcondition always holds
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 670 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 647 mSDsluCounter, 1736 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1421 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1773 IncrementalHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 315 mSDtfsCounter, 1773 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 237 SyntacticMatches, 14 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=11, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 79 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 502 NumberOfCodeBlocks, 454 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 1247 SizeOfPredicates, 24 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 356/589 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-09-13 10:27:58,334 INFO  L540       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...