./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/afterrec-2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 04d6fb36
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/afterrec-2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c92d0a3779cdad7e145b29b6ae35aeb1a90bc327e2327b92a2158da4de5b6ea --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1
--- Real Ultimate output ---
This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m
[2024-09-15 19:43:56,091 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-15 19:43:56,145 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-15 19:43:56,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-15 19:43:56,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-15 19:43:56,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-15 19:43:56,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-15 19:43:56,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-15 19:43:56,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-15 19:43:56,182 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-15 19:43:56,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-15 19:43:56,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-15 19:43:56,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-15 19:43:56,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-15 19:43:56,184 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-15 19:43:56,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-15 19:43:56,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-15 19:43:56,184 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-15 19:43:56,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-15 19:43:56,185 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-15 19:43:56,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-15 19:43:56,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-15 19:43:56,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-15 19:43:56,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-15 19:43:56,190 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-15 19:43:56,190 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-15 19:43:56,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-15 19:43:56,192 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-15 19:43:56,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-15 19:43:56,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-15 19:43:56,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-15 19:43:56,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-15 19:43:56,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-15 19:43:56,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-15 19:43:56,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-15 19:43:56,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-15 19:43:56,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-15 19:43:56,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-15 19:43:56,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-15 19:43:56,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-15 19:43:56,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-15 19:43:56,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-15 19:43:56,196 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c92d0a3779cdad7e145b29b6ae35aeb1a90bc327e2327b92a2158da4de5b6ea
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
[2024-09-15 19:43:56,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-15 19:43:56,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-15 19:43:56,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-15 19:43:56,519 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-15 19:43:56,519 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-15 19:43:56,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/afterrec-2.c
[2024-09-15 19:43:57,782 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-15 19:43:57,987 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-15 19:43:57,987 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/afterrec-2.c
[2024-09-15 19:43:57,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/55b0381b7/8e54b3f16dc04d27af74edda1f211e38/FLAG5030a327a
[2024-09-15 19:43:58,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/55b0381b7/8e54b3f16dc04d27af74edda1f211e38
[2024-09-15 19:43:58,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-15 19:43:58,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-15 19:43:58,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-15 19:43:58,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-15 19:43:58,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-15 19:43:58,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24eced54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58, skipping insertion in model container
[2024-09-15 19:43:58,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,367 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-15 19:43:58,481 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/afterrec-2.c[318,331]
[2024-09-15 19:43:58,484 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-15 19:43:58,495 INFO L200 MainTranslator]: Completed pre-run
[2024-09-15 19:43:58,503 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/afterrec-2.c[318,331]
[2024-09-15 19:43:58,505 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-15 19:43:58,517 INFO L204 MainTranslator]: Completed translation
[2024-09-15 19:43:58,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58 WrapperNode
[2024-09-15 19:43:58,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-15 19:43:58,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-15 19:43:58,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-15 19:43:58,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-15 19:43:58,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,533 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-15 19:43:58,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-15 19:43:58,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-15 19:43:58,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-15 19:43:58,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-15 19:43:58,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,550 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-09-15 19:43:58,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-15 19:43:58,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-15 19:43:58,559 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-15 19:43:58,559 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-15 19:43:58,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (1/1) ...
[2024-09-15 19:43:58,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-15 19:43:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:43:58,589 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 19:43:58,596 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 19:43:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-15 19:43:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-15 19:43:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-15 19:43:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure f
[2024-09-15 19:43:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure f
[2024-09-15 19:43:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-15 19:43:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-15 19:43:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-15 19:43:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-15 19:43:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-09-15 19:43:58,741 INFO L242 CfgBuilder]: Building ICFG
[2024-09-15 19:43:58,743 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-15 19:43:58,821 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live.
[2024-09-15 19:43:58,821 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-15 19:43:58,835 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-15 19:43:58,835 INFO L318 CfgBuilder]: Removed 0 assume(true) statements.
[2024-09-15 19:43:58,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:43:58 BoogieIcfgContainer
[2024-09-15 19:43:58,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-15 19:43:58,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-15 19:43:58,838 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-15 19:43:58,840 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-15 19:43:58,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:43:58" (1/3) ...
[2024-09-15 19:43:58,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e281d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:43:58, skipping insertion in model container
[2024-09-15 19:43:58,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:43:58" (2/3) ...
[2024-09-15 19:43:58,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e281d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:43:58, skipping insertion in model container
[2024-09-15 19:43:58,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:43:58" (3/3) ...
[2024-09-15 19:43:58,842 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec-2.c
[2024-09-15 19:43:58,854 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-15 19:43:58,854 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-15 19:43:58,899 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-15 19:43:58,904 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=All, 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;@11da15bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-15 19:43:58,904 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-15 19:43:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-09-15 19:43:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-09-15 19:43:58,912 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-15 19:43:58,913 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-15 19:43:58,913 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-15 19:43:58,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:43:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2118345569, now seen corresponding path program 1 times
[2024-09-15 19:43:58,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-15 19:43:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991805622]
[2024-09-15 19:43:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:43:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-15 19:43:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:43:59,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-15 19:43:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:43:59,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2024-09-15 19:43:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:43:59,178 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 19:43:59,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-15 19:43:59,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991805622]
[2024-09-15 19:43:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991805622] provided 0 perfect and 1 imperfect interpolant sequences
[2024-09-15 19:43:59,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239507193]
[2024-09-15 19:43:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-15 19:43:59,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-15 19:43:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-15 19:43:59,185 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 19:43:59,186 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 19:43:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-15 19:43:59,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-09-15 19:43:59,230 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-15 19:43:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-15 19:43:59,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-15 19:43:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239507193] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-15 19:43:59,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-15 19:43:59,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6
[2024-09-15 19:43:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729207277]
[2024-09-15 19:43:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-15 19:43:59,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-15 19:43:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-15 19:43:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-15 19:43:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-09-15 19:43:59,301 INFO L87 Difference]: Start difference. First operand has 16 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 19:43:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-15 19:43:59,339 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions.
[2024-09-15 19:43:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2024-09-15 19:43:59,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13
[2024-09-15 19:43:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-15 19:43:59,354 INFO L225 Difference]: With dead ends: 24
[2024-09-15 19:43:59,354 INFO L226 Difference]: Without dead ends: 0
[2024-09-15 19:43:59,361 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2024-09-15 19:43:59,363 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-15 19:43:59,366 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-15 19:43:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-15 19:43:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-15 19:43:59,385 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 19:43:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-15 19:43:59,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13
[2024-09-15 19:43:59,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-15 19:43:59,387 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-15 19:43:59,388 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-15 19:43:59,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-15 19:43:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-15 19:43:59,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-15 19:43:59,391 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-09-15 19:43:59,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-15 19:43:59,592 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2024-09-15 19:43:59,595 INFO L408 BasicCegarLoop]: Path program histogram: [1]
[2024-09-15 19:43:59,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-09-15 19:43:59,658 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-15 19:43:59,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:43:59 BoogieIcfgContainer
[2024-09-15 19:43:59,670 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-15 19:43:59,671 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-09-15 19:43:59,671 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-09-15 19:43:59,671 INFO L274 PluginConnector]: Witness Printer initialized
[2024-09-15 19:43:59,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:43:58" (3/4) ...
[2024-09-15 19:43:59,673 INFO L139 WitnessPrinter]: Generating witness for correct program
[2024-09-15 19:43:59,675 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init
[2024-09-15 19:43:59,676 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f
[2024-09-15 19:43:59,676 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main
[2024-09-15 19:43:59,678 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges
[2024-09-15 19:43:59,678 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2024-09-15 19:43:59,678 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2024-09-15 19:43:59,678 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2024-09-15 19:43:59,734 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml
[2024-09-15 19:43:59,734 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml
[2024-09-15 19:43:59,735 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-09-15 19:43:59,735 INFO L158 Benchmark]: Toolchain (without parser) took 1387.27ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 41.5MB in the beginning and 72.2MB in the end (delta: -30.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,735 INFO L158 Benchmark]: CDTParser took 1.17ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-15 19:43:59,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.02ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 30.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.83ms. Allocated memory is still 62.9MB. Free memory was 30.6MB in the beginning and 29.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,740 INFO L158 Benchmark]: Boogie Preprocessor took 23.85ms. Allocated memory is still 62.9MB. Free memory was 29.6MB in the beginning and 28.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,740 INFO L158 Benchmark]: RCFGBuilder took 277.30ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 28.1MB in the beginning and 70.4MB in the end (delta: -42.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,740 INFO L158 Benchmark]: TraceAbstraction took 832.85ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 76.9MB in the end (delta: -7.1MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,740 INFO L158 Benchmark]: Witness Printer took 63.67ms. Allocated memory is still 98.6MB. Free memory was 76.9MB in the beginning and 72.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-09-15 19:43:59,742 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.17ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 169.02ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 30.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 14.83ms. Allocated memory is still 62.9MB. Free memory was 30.6MB in the beginning and 29.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 23.85ms. Allocated memory is still 62.9MB. Free memory was 29.6MB in the beginning and 28.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 277.30ms. Allocated memory was 62.9MB in the beginning and 98.6MB in the end (delta: 35.7MB). Free memory was 28.1MB in the beginning and 70.4MB in the end (delta: -42.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 832.85ms. Allocated memory is still 98.6MB. Free memory was 69.8MB in the beginning and 76.9MB in the end (delta: -7.1MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB.
* Witness Printer took 63.67ms. Allocated memory is still 98.6MB. Free memory was 76.9MB in the beginning and 72.2MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. 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: 9]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 1 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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
1 specifications checked. All of them hold
- ProcedureContractResult [Line: 5]: Procedure Contract for f
Derived contract for procedure f. Requires: (\old(n) <= 2) Ensures: (\old(n) <= 2)
RESULT: Ultimate proved your program to be correct!
[2024-09-15 19:43:59,771 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE