This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m
[2024-09-15 20:25:19,605 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-09-15 20:25:19,684 INFO  L114        SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-15 20:25:19,692 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-09-15 20:25:19,693 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-15 20:25:19,722 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-15 20:25:19,724 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-15 20:25:19,724 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-15 20:25:19,725 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-15 20:25:19,726 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-09-15 20:25:19,727 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-15 20:25:19,728 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-15 20:25:19,728 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-15 20:25:19,729 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-09-15 20:25:19,729 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-09-15 20:25:19,732 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-15 20:25:19,733 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-09-15 20:25:19,733 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-09-15 20:25:19,733 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-09-15 20:25:19,734 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-09-15 20:25:19,734 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-09-15 20:25:19,734 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-09-15 20:25:19,735 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-15 20:25:19,735 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-09-15 20:25:19,735 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-09-15 20:25:19,735 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-09-15 20:25:19,735 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-09-15 20:25:19,736 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-09-15 20:25:19,736 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-15 20:25:19,736 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-09-15 20:25:19,736 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-09-15 20:25:19,737 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-09-15 20:25:19,737 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-15 20:25:19,737 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-15 20:25:19,737 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-09-15 20:25:19,738 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-15 20:25:19,738 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-09-15 20:25:19,738 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-15 20:25:19,742 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-15 20:25:19,742 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-15 20:25:19,742 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-09-15 20:25:19,743 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-15 20:25:19,743 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None
[2024-09-15 20:25:20,077 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-15 20:25:20,097 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-15 20:25:20,101 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-15 20:25:20,102 INFO  L270        PluginConnector]: Initializing Witness Parser...
[2024-09-15 20:25:20,103 INFO  L274        PluginConnector]: Witness Parser initialized
[2024-09-15 20:25:20,105 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_20x0-2.yml/witness-2.1.yml
[2024-09-15 20:25:20,151 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-09-15 20:25:20,152 INFO  L274        PluginConnector]: CDTParser initialized
[2024-09-15 20:25:20,152 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c
[2024-09-15 20:25:21,650 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-09-15 20:25:21,839 INFO  L384              CDTParser]: Found 1 translation units.
[2024-09-15 20:25:21,840 INFO  L180              CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c
[2024-09-15 20:25:21,847 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c6db62c5f/dffd2a6196f54949b66c8bc757fe06d8/FLAGd04769451
[2024-09-15 20:25:22,227 INFO  L435              CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c6db62c5f/dffd2a6196f54949b66c8bc757fe06d8
[2024-09-15 20:25:22,228 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-15 20:25:22,230 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-09-15 20:25:22,237 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-15 20:25:22,238 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-15 20:25:22,243 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-15 20:25:22,244 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:20" (1/2) ...
[2024-09-15 20:25:22,248 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad56c20 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:25:22, skipping insertion in model container
[2024-09-15 20:25:22,248 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:20" (1/2) ...
[2024-09-15 20:25:22,250 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a61d1a0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:25:22, skipping insertion in model container
[2024-09-15 20:25:22,250 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:25:22" (2/2) ...
[2024-09-15 20:25:22,250 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad56c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22, skipping insertion in model container
[2024-09-15 20:25:22,250 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:25:22" (2/2) ...
[2024-09-15 20:25:22,255 INFO  L93    nessWitnessExtractor]: Found the following entries in the witness:
[2024-09-15 20:25:22,256 INFO  L1541             ArrayList]: Function contract at [L5]: requires null, ensures (\result == ((long long) \old(n) + \old(m)))
[2024-09-15 20:25:22,270 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-09-15 20:25:22,422 WARN  L248   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494]
[2024-09-15 20:25:22,431 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-09-15 20:25:22,444 INFO  L200         MainTranslator]: Completed pre-run
Start Parsing Global
[2024-09-15 20:25:22,483 WARN  L248   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494]
[2024-09-15 20:25:22,485 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-09-15 20:25:22,499 INFO  L204         MainTranslator]: Completed translation
[2024-09-15 20:25:22,501 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22 WrapperNode
[2024-09-15 20:25:22,501 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-15 20:25:22,502 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-15 20:25:22,502 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-15 20:25:22,502 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-15 20:25:22,508 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,514 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,528 INFO  L138                Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19
[2024-09-15 20:25:22,528 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-15 20:25:22,530 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-15 20:25:22,530 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-15 20:25:22,530 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-09-15 20:25:22,539 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,539 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,541 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,548 WARN  L109           MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure sum is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification
[2024-09-15 20:25:22,548 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,548 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,555 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,557 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,557 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,558 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,559 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-15 20:25:22,562 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-15 20:25:22,562 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-09-15 20:25:22,562 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-09-15 20:25:22,563 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ...
[2024-09-15 20:25:22,568 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-15 20:25:22,577 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:22,598 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)
[2024-09-15 20:25:22,601 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
[2024-09-15 20:25:22,639 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-15 20:25:22,639 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-15 20:25:22,639 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-15 20:25:22,639 INFO  L130     BoogieDeclarations]: Found specification of procedure sum
[2024-09-15 20:25:22,640 INFO  L138     BoogieDeclarations]: Found implementation of procedure sum
[2024-09-15 20:25:22,640 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2024-09-15 20:25:22,698 INFO  L242             CfgBuilder]: Building ICFG
[2024-09-15 20:25:22,700 INFO  L268             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-15 20:25:22,829 INFO  L?                        ?]: Removed 13 outVars from TransFormulas that were not future-live.
[2024-09-15 20:25:22,829 INFO  L291             CfgBuilder]: Performing block encoding
[2024-09-15 20:25:22,861 INFO  L313             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-15 20:25:22,861 INFO  L318             CfgBuilder]: Removed 0 assume(true) statements.
[2024-09-15 20:25:22,862 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:25:22 BoogieIcfgContainer
[2024-09-15 20:25:22,862 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-15 20:25:22,865 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-15 20:25:22,866 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-09-15 20:25:22,868 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-09-15 20:25:22,869 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:20" (1/4) ...
[2024-09-15 20:25:22,869 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f0fe and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:25:22, skipping insertion in model container
[2024-09-15 20:25:22,869 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:25:22" (2/4) ...
[2024-09-15 20:25:22,870 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:25:22, skipping insertion in model container
[2024-09-15 20:25:22,870 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (3/4) ...
[2024-09-15 20:25:22,870 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:25:22, skipping insertion in model container
[2024-09-15 20:25:22,870 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:25:22" (4/4) ...
[2024-09-15 20:25:22,871 INFO  L112   eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c
[2024-09-15 20:25:22,890 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-15 20:25:22,890 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2024-09-15 20:25:22,928 INFO  L335      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-15 20:25:22,935 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;@617032ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-15 20:25:22,935 INFO  L337      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2024-09-15 20:25:22,939 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 20:25:22,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-09-15 20:25:22,948 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:22,948 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-09-15 20:25:22,949 INFO  L399      AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:22,957 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:22,957 INFO  L85        PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times
[2024-09-15 20:25:22,965 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:22,965 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698292073]
[2024-09-15 20:25:22,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:22,966 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:23,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:23,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:23,257 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:23,257 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698292073]
[2024-09-15 20:25:23,258 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698292073] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-15 20:25:23,258 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-15 20:25:23,260 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-09-15 20:25:23,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048370618]
[2024-09-15 20:25:23,263 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-15 20:25:23,268 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-15 20:25:23,269 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:25:23,312 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-15 20:25:23,313 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-15 20:25:23,315 INFO  L87              Difference]: Start difference. First operand  has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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)
[2024-09-15 20:25:23,412 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:25:23,413 INFO  L93              Difference]: Finished difference Result 22 states and 23 transitions.
[2024-09-15 20:25:23,414 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-09-15 20:25:23,416 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
[2024-09-15 20:25:23,416 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:25:23,421 INFO  L225             Difference]: With dead ends: 22
[2024-09-15 20:25:23,422 INFO  L226             Difference]: Without dead ends: 20
[2024-09-15 20:25:23,424 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
[2024-09-15 20:25:23,428 INFO  L434           NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 20:25:23,430 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 20:25:23,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2024-09-15 20:25:23,461 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19.
[2024-09-15 20:25:23,462 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-15 20:25:23,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2024-09-15 20:25:23,465 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5
[2024-09-15 20:25:23,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:25:23,466 INFO  L474      AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2024-09-15 20:25:23,466 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)
[2024-09-15 20:25:23,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2024-09-15 20:25:23,468 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-09-15 20:25:23,468 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:23,469 INFO  L216           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-09-15 20:25:23,469 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-15 20:25:23,470 INFO  L399      AbstractCegarLoop]: === Iteration 2 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:23,471 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:23,472 INFO  L85        PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times
[2024-09-15 20:25:23,472 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:23,473 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750777353]
[2024-09-15 20:25:23,473 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:23,474 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:23,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:23,604 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:23,605 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:23,605 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750777353]
[2024-09-15 20:25:23,605 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750777353] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 20:25:23,605 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643349773]
[2024-09-15 20:25:23,605 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:23,605 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:23,606 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:23,610 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)
[2024-09-15 20:25:23,616 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-15 20:25:23,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:23,664 INFO  L262         TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-09-15 20:25:23,669 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 20:25:23,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:23,735 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 20:25:23,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:23,821 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643349773] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 20:25:23,822 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 20:25:23,822 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11
[2024-09-15 20:25:23,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913258598]
[2024-09-15 20:25:23,823 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 20:25:23,824 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-09-15 20:25:23,824 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:25:23,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-09-15 20:25:23,825 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2024-09-15 20:25:23,825 INFO  L87              Difference]: Start difference. First operand 19 states and 21 transitions. Second operand  has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-15 20:25:24,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:25:24,026 INFO  L93              Difference]: Finished difference Result 44 states and 46 transitions.
[2024-09-15 20:25:24,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2024-09-15 20:25:24,026 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-09-15 20:25:24,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:25:24,028 INFO  L225             Difference]: With dead ends: 44
[2024-09-15 20:25:24,028 INFO  L226             Difference]: Without dead ends: 44
[2024-09-15 20:25:24,029 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240
[2024-09-15 20:25:24,030 INFO  L434           NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-15 20:25:24,031 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-15 20:25:24,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-09-15 20:25:24,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37.
[2024-09-15 20:25:24,038 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-15 20:25:24,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions.
[2024-09-15 20:25:24,039 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8
[2024-09-15 20:25:24,039 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:25:24,040 INFO  L474      AbstractCegarLoop]: Abstraction has 37 states and 42 transitions.
[2024-09-15 20:25:24,040 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-15 20:25:24,040 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions.
[2024-09-15 20:25:24,041 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-09-15 20:25:24,041 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:24,041 INFO  L216           NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1]
[2024-09-15 20:25:24,059 INFO  L540       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-09-15 20:25:24,242 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:24,242 INFO  L399      AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:24,243 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:24,243 INFO  L85        PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times
[2024-09-15 20:25:24,243 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:24,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294129424]
[2024-09-15 20:25:24,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:24,244 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:24,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:24,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:24,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:24,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294129424]
[2024-09-15 20:25:24,522 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294129424] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 20:25:24,522 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256695866]
[2024-09-15 20:25:24,522 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-15 20:25:24,522 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:24,523 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:24,524 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)
[2024-09-15 20:25:24,526 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-15 20:25:24,564 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2024-09-15 20:25:24,565 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 20:25:24,566 INFO  L262         TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-09-15 20:25:24,567 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 20:25:24,614 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-09-15 20:25:24,615 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-15 20:25:24,615 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [256695866] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-15 20:25:24,615 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-15 20:25:24,616 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15
[2024-09-15 20:25:24,616 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717684653]
[2024-09-15 20:25:24,616 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-15 20:25:24,617 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-15 20:25:24,617 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:25:24,618 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-15 20:25:24,619 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210
[2024-09-15 20:25:24,619 INFO  L87              Difference]: Start difference. First operand 37 states and 42 transitions. Second operand  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-15 20:25:24,671 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:25:24,671 INFO  L93              Difference]: Finished difference Result 39 states and 45 transitions.
[2024-09-15 20:25:24,671 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-09-15 20:25:24,672 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 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 17
[2024-09-15 20:25:24,672 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:25:24,673 INFO  L225             Difference]: With dead ends: 39
[2024-09-15 20:25:24,673 INFO  L226             Difference]: Without dead ends: 39
[2024-09-15 20:25:24,674 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240
[2024-09-15 20:25:24,675 INFO  L434           NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 20:25:24,675 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 20:25:24,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-09-15 20:25:24,680 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38.
[2024-09-15 20:25:24,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-15 20:25:24,681 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions.
[2024-09-15 20:25:24,681 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17
[2024-09-15 20:25:24,682 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:25:24,682 INFO  L474      AbstractCegarLoop]: Abstraction has 38 states and 43 transitions.
[2024-09-15 20:25:24,682 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-15 20:25:24,682 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions.
[2024-09-15 20:25:24,682 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-09-15 20:25:24,682 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:24,683 INFO  L216           NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 20:25:24,699 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-09-15 20:25:24,883 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:24,884 INFO  L399      AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:24,884 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:24,884 INFO  L85        PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times
[2024-09-15 20:25:24,884 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:24,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387857433]
[2024-09-15 20:25:24,885 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:24,886 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:24,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:25,099 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2024-09-15 20:25:25,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:25,173 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:25,173 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:25,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387857433]
[2024-09-15 20:25:25,174 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387857433] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 20:25:25,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96302424]
[2024-09-15 20:25:25,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:25,174 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:25,174 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:25,179 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)
[2024-09-15 20:25:25,180 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-09-15 20:25:25,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:25,222 INFO  L262         TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-09-15 20:25:25,223 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 20:25:25,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:25,284 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 20:25:25,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:25,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [96302424] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 20:25:25,511 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 20:25:25,512 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25
[2024-09-15 20:25:25,512 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829426475]
[2024-09-15 20:25:25,512 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 20:25:25,512 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-09-15 20:25:25,513 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:25:25,514 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-09-15 20:25:25,514 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600
[2024-09-15 20:25:25,515 INFO  L87              Difference]: Start difference. First operand 38 states and 43 transitions. Second operand  has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 20:25:25,935 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:25:25,935 INFO  L93              Difference]: Finished difference Result 71 states and 72 transitions.
[2024-09-15 20:25:25,936 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2024-09-15 20:25:25,936 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20
[2024-09-15 20:25:25,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:25:25,937 INFO  L225             Difference]: With dead ends: 71
[2024-09-15 20:25:25,937 INFO  L226             Difference]: Without dead ends: 71
[2024-09-15 20:25:25,938 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190
[2024-09-15 20:25:25,939 INFO  L434           NwaCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-09-15 20:25:25,939 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 73 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-09-15 20:25:25,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2024-09-15 20:25:25,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63.
[2024-09-15 20:25:25,945 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11)
[2024-09-15 20:25:25,947 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions.
[2024-09-15 20:25:25,947 INFO  L78                 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20
[2024-09-15 20:25:25,947 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:25:25,947 INFO  L474      AbstractCegarLoop]: Abstraction has 63 states and 72 transitions.
[2024-09-15 20:25:25,947 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 20:25:25,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions.
[2024-09-15 20:25:25,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2024-09-15 20:25:25,948 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:25,948 INFO  L216           NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 20:25:25,966 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-09-15 20:25:26,148 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:26,149 INFO  L399      AbstractCegarLoop]: === Iteration 5 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:26,150 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:26,150 INFO  L85        PathProgramCache]: Analyzing trace with hash 756088836, now seen corresponding path program 2 times
[2024-09-15 20:25:26,150 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:26,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952448765]
[2024-09-15 20:25:26,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:26,150 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:26,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:26,537 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2024-09-15 20:25:26,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:26,603 INFO  L134       CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:26,604 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:26,604 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952448765]
[2024-09-15 20:25:26,604 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952448765] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 20:25:26,605 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039064434]
[2024-09-15 20:25:26,605 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-15 20:25:26,605 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:26,605 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:26,607 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)
[2024-09-15 20:25:26,610 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-09-15 20:25:26,671 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-15 20:25:26,672 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 20:25:26,674 INFO  L262         TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-09-15 20:25:26,676 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 20:25:26,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:26,761 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 20:25:27,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:27,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039064434] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 20:25:27,331 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 20:25:27,331 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 45
[2024-09-15 20:25:27,331 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501289070]
[2024-09-15 20:25:27,332 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 20:25:27,332 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 45 states
[2024-09-15 20:25:27,332 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:25:27,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2024-09-15 20:25:27,335 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980
[2024-09-15 20:25:27,335 INFO  L87              Difference]: Start difference. First operand 63 states and 72 transitions. Second operand  has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 20:25:28,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:25:28,253 INFO  L93              Difference]: Finished difference Result 141 states and 142 transitions.
[2024-09-15 20:25:28,254 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. 
[2024-09-15 20:25:28,254 INFO  L78                 Accepts]: Start accepts. Automaton has  has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35
[2024-09-15 20:25:28,255 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:25:28,256 INFO  L225             Difference]: With dead ends: 141
[2024-09-15 20:25:28,256 INFO  L226             Difference]: Without dead ends: 141
[2024-09-15 20:25:28,257 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160
[2024-09-15 20:25:28,258 INFO  L434           NwaCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-09-15 20:25:28,259 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 190 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-09-15 20:25:28,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2024-09-15 20:25:28,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123.
[2024-09-15 20:25:28,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 123 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 83 states have internal predecessors, (101), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21)
[2024-09-15 20:25:28,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions.
[2024-09-15 20:25:28,281 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 35
[2024-09-15 20:25:28,281 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:25:28,282 INFO  L474      AbstractCegarLoop]: Abstraction has 123 states and 142 transitions.
[2024-09-15 20:25:28,282 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 20:25:28,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions.
[2024-09-15 20:25:28,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2024-09-15 20:25:28,283 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:28,283 INFO  L216           NwaCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 20:25:28,302 INFO  L540       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-09-15 20:25:28,488 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:28,489 INFO  L399      AbstractCegarLoop]: === Iteration 6 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:28,489 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:28,489 INFO  L85        PathProgramCache]: Analyzing trace with hash -1369371833, now seen corresponding path program 3 times
[2024-09-15 20:25:28,489 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:28,489 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851966202]
[2024-09-15 20:25:28,489 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:28,490 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:28,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:29,693 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61
[2024-09-15 20:25:29,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:29,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 611 backedges. 552 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 20:25:29,733 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:29,733 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851966202]
[2024-09-15 20:25:29,734 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851966202] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 20:25:29,734 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769252759]
[2024-09-15 20:25:29,734 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-09-15 20:25:29,734 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:29,734 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:29,736 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)
[2024-09-15 20:25:29,738 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-09-15 20:25:29,787 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-09-15 20:25:29,788 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-15 20:25:29,789 INFO  L262         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjuncts are in the unsatisfiable core
[2024-09-15 20:25:29,792 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 20:25:29,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 611 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked.
[2024-09-15 20:25:29,854 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-15 20:25:29,855 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [769252759] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-15 20:25:29,855 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-15 20:25:29,855 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [45] total 46
[2024-09-15 20:25:29,855 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993799756]
[2024-09-15 20:25:29,856 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-15 20:25:29,856 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-15 20:25:29,858 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:25:29,859 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-15 20:25:29,860 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162
[2024-09-15 20:25:29,860 INFO  L87              Difference]: Start difference. First operand 123 states and 142 transitions. Second operand  has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-15 20:25:29,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:25:29,912 INFO  L93              Difference]: Finished difference Result 122 states and 123 transitions.
[2024-09-15 20:25:29,912 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-09-15 20:25:29,913 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68
[2024-09-15 20:25:29,913 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:25:29,914 INFO  L225             Difference]: With dead ends: 122
[2024-09-15 20:25:29,914 INFO  L226             Difference]: Without dead ends: 122
[2024-09-15 20:25:29,915 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352
[2024-09-15 20:25:29,916 INFO  L434           NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 20:25:29,918 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 20:25:29,919 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2024-09-15 20:25:29,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122.
[2024-09-15 20:25:29,934 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 122 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 82 states have internal predecessors, (82), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21)
[2024-09-15 20:25:29,935 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions.
[2024-09-15 20:25:29,937 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 68
[2024-09-15 20:25:29,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:25:29,938 INFO  L474      AbstractCegarLoop]: Abstraction has 122 states and 123 transitions.
[2024-09-15 20:25:29,938 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-09-15 20:25:29,938 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions.
[2024-09-15 20:25:29,941 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2024-09-15 20:25:29,944 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:25:29,945 INFO  L216           NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 20:25:29,963 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-09-15 20:25:30,148 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-09-15 20:25:30,149 INFO  L399      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:25:30,149 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:25:30,149 INFO  L85        PathProgramCache]: Analyzing trace with hash -949632177, now seen corresponding path program 1 times
[2024-09-15 20:25:30,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:25:30,149 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364087061]
[2024-09-15 20:25:30,149 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:30,150 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:25:30,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:30,673 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2024-09-15 20:25:30,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:31,125 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:31,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:31,497 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:31,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:31,848 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:31,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:32,178 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:32,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:32,422 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:32,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:32,626 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:32,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:32,844 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:32,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,013 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,161 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,302 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,418 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,519 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,626 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,701 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,764 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,830 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,875 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,913 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:33,946 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:25:33,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:34,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked.
[2024-09-15 20:25:34,006 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:25:34,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364087061]
[2024-09-15 20:25:34,007 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364087061] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 20:25:34,007 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972746689]
[2024-09-15 20:25:34,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:25:34,007 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:25:34,007 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 20:25:34,009 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)
[2024-09-15 20:25:34,010 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-09-15 20:25:34,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:25:34,098 INFO  L262         TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjuncts are in the unsatisfiable core
[2024-09-15 20:25:34,103 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 20:25:34,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked.
[2024-09-15 20:25:34,305 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-15 20:26:04,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2024-09-15 20:26:04,798 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [972746689] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-15 20:26:04,798 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-09-15 20:26:04,798 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 43] total 47
[2024-09-15 20:26:04,799 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745359350]
[2024-09-15 20:26:04,799 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-09-15 20:26:04,800 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 47 states
[2024-09-15 20:26:04,800 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:26:04,801 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2024-09-15 20:26:04,802 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162
[2024-09-15 20:26:04,802 INFO  L87              Difference]: Start difference. First operand 122 states and 123 transitions. Second operand  has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58)
[2024-09-15 20:26:05,241 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:26:05,241 INFO  L93              Difference]: Finished difference Result 692 states and 711 transitions.
[2024-09-15 20:26:05,242 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2024-09-15 20:26:05,242 INFO  L78                 Accepts]: Start accepts. Automaton has  has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) Word has length 123
[2024-09-15 20:26:05,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:26:05,247 INFO  L225             Difference]: With dead ends: 692
[2024-09-15 20:26:05,248 INFO  L226             Difference]: Without dead ends: 638
[2024-09-15 20:26:05,249 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 241 SyntacticMatches, 21 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1455, Invalid=3101, Unknown=0, NotChecked=0, Total=4556
[2024-09-15 20:26:05,250 INFO  L434           NwaCegarLoop]: 6 mSDtfsCounter, 371 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-09-15 20:26:05,250 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 78 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-09-15 20:26:05,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 638 states.
[2024-09-15 20:26:05,291 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 125.
[2024-09-15 20:26:05,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 125 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 84 states have internal predecessors, (84), 20 states have call successors, (20), 19 states have call predecessors, (20), 21 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22)
[2024-09-15 20:26:05,296 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions.
[2024-09-15 20:26:05,296 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 123
[2024-09-15 20:26:05,297 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:26:05,297 INFO  L474      AbstractCegarLoop]: Abstraction has 125 states and 126 transitions.
[2024-09-15 20:26:05,297 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58)
[2024-09-15 20:26:05,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions.
[2024-09-15 20:26:05,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2024-09-15 20:26:05,303 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-15 20:26:05,303 INFO  L216           NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 20:26:05,317 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-09-15 20:26:05,504 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 20:26:05,504 INFO  L399      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] ===
[2024-09-15 20:26:05,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 20:26:05,505 INFO  L85        PathProgramCache]: Analyzing trace with hash 1487103875, now seen corresponding path program 2 times
[2024-09-15 20:26:05,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 20:26:05,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624200795]
[2024-09-15 20:26:05,505 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 20:26:05,505 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 20:26:05,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,689 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2024-09-15 20:26:05,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,797 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,824 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,845 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,863 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,880 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,896 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,902 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,912 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,925 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,937 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,949 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,961 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,972 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,982 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,985 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,991 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:05,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:05,998 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:06,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:06,004 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:06,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:06,010 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:06,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:06,015 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:06,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:06,018 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:06,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:06,021 INFO  L381   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-09-15 20:26:06,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 20:26:06,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 1220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-09-15 20:26:06,025 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 20:26:06,025 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624200795]
[2024-09-15 20:26:06,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624200795] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-15 20:26:06,025 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-15 20:26:06,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-09-15 20:26:06,025 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483852288]
[2024-09-15 20:26:06,026 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-15 20:26:06,026 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-15 20:26:06,026 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 20:26:06,027 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-15 20:26:06,027 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-15 20:26:06,027 INFO  L87              Difference]: Start difference. First operand 125 states and 126 transitions. Second operand  has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-15 20:26:06,044 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 20:26:06,044 INFO  L93              Difference]: Finished difference Result 123 states and 124 transitions.
[2024-09-15 20:26:06,044 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-09-15 20:26:06,045 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129
[2024-09-15 20:26:06,046 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 20:26:06,046 INFO  L225             Difference]: With dead ends: 123
[2024-09-15 20:26:06,046 INFO  L226             Difference]: Without dead ends: 0
[2024-09-15 20:26:06,047 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-15 20:26:06,047 INFO  L434           NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 20:26:06,048 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 20:26:06,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-15 20:26:06,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-15 20:26:06,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-15 20:26:06,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-15 20:26:06,050 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129
[2024-09-15 20:26:06,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-15 20:26:06,050 INFO  L474      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-15 20:26:06,050 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-15 20:26:06,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-15 20:26:06,050 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-15 20:26:06,053 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2024-09-15 20:26:06,053 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location sumErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining)
[2024-09-15 20:26:06,053 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-09-15 20:26:06,056 INFO  L408         BasicCegarLoop]: Path program histogram: [3, 2, 2, 1]
[2024-09-15 20:26:06,058 INFO  L165   ceAbstractionStarter]: Computing trace abstraction results
[2024-09-15 20:26:06,062 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:26:06 BoogieIcfgContainer
[2024-09-15 20:26:06,062 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-15 20:26:06,063 INFO  L158              Benchmark]: Toolchain (without parser) took 43833.39ms. Allocated memory was 69.2MB in the beginning and 289.4MB in the end (delta: 220.2MB). Free memory was 33.1MB in the beginning and 123.3MB in the end (delta: -90.2MB). Peak memory consumption was 131.0MB. Max. memory is 16.1GB.
[2024-09-15 20:26:06,063 INFO  L158              Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 50.3MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-15 20:26:06,063 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 50.3MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-15 20:26:06,063 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 263.67ms. Allocated memory is still 69.2MB. Free memory was 50.9MB in the beginning and 38.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-09-15 20:26:06,064 INFO  L158              Benchmark]: Boogie Procedure Inliner took 26.76ms. Allocated memory is still 69.2MB. Free memory was 38.3MB in the beginning and 36.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-15 20:26:06,064 INFO  L158              Benchmark]: Boogie Preprocessor took 29.29ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-15 20:26:06,064 INFO  L158              Benchmark]: RCFGBuilder took 300.12ms. Allocated memory is still 69.2MB. Free memory was 35.5MB in the beginning and 44.6MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-09-15 20:26:06,065 INFO  L158              Benchmark]: TraceAbstraction took 43197.13ms. Allocated memory was 69.2MB in the beginning and 289.4MB in the end (delta: 220.2MB). Free memory was 43.7MB in the beginning and 123.3MB in the end (delta: -79.6MB). Peak memory consumption was 141.1MB. Max. memory is 16.1GB.
[2024-09-15 20:26:06,067 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * Witness Parser took 0.18ms. Allocated memory is still 50.3MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB.
 * CDTParser took 0.11ms. Allocated memory is still 50.3MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 263.67ms. Allocated memory is still 69.2MB. Free memory was 50.9MB in the beginning and 38.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 26.76ms. Allocated memory is still 69.2MB. Free memory was 38.3MB in the beginning and 36.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
 * Boogie Preprocessor took 29.29ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 300.12ms. Allocated memory is still 69.2MB. Free memory was 35.5MB in the beginning and 44.6MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * TraceAbstraction took 43197.13ms. Allocated memory was 69.2MB in the beginning and 289.4MB in the end (delta: 220.2MB). Free memory was 43.7MB in the beginning and 123.3MB in the end (delta: -79.6MB). Peak memory consumption was 141.1MB. 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
  - PositiveResult [Line: 18]: a call to reach_error is unreachable
    For all program executions holds that a call to reach_error is unreachable at this location
  - PositiveResult [Line: 5]: procedure postcondition always holds
    For all program executions holds that procedure postcondition always holds at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 43.1s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 823 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 815 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1449 IncrementalHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 294 mSolverCounterUnsat, 83 mSDtfsCounter, 1449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 456 SyntacticMatches, 23 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3414 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=7, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 548 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.6s InterpolantComputationTime, 676 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 844 ConstructedInterpolants, 0 QuantifiedInterpolants, 2162 SizeOfPredicates, 36 NumberOfNonLiveVariables, 804 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 3688/6268 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
  - AllSpecificationsHoldResult: All specifications hold
    2 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-09-15 20:26:06,101 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...