./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/eca-programs/Problem101_label02.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 6ae2ee47
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/eca-programs/Problem101_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5057001587b31af0d9267b7a81b3d3f3e516585c42fa14cc5f4375d56abd7166 --preprocessor.use.memory.slicer true
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-6ae2ee4-m
[2023-11-22 22:36:44,160 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-22 22:36:44,221 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-22 22:36:44,227 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-22 22:36:44,227 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-22 22:36:44,249 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-22 22:36:44,250 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-22 22:36:44,250 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-22 22:36:44,251 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-11-22 22:36:44,253 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-11-22 22:36:44,254 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-22 22:36:44,254 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-22 22:36:44,255 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-22 22:36:44,255 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-22 22:36:44,256 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-22 22:36:44,256 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-22 22:36:44,256 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-22 22:36:44,256 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-22 22:36:44,256 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-22 22:36:44,257 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-22 22:36:44,257 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-22 22:36:44,257 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-22 22:36:44,257 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-22 22:36:44,258 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-22 22:36:44,258 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-22 22:36:44,258 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-22 22:36:44,258 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-22 22:36:44,258 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-22 22:36:44,259 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-22 22:36:44,259 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-11-22 22:36:44,260 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-22 22:36:44,260 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-22 22:36:44,260 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-22 22:36:44,260 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-22 22:36:44,260 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-22 22:36:44,260 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-22 22:36:44,261 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-22 22:36:44,261 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-11-22 22:36:44,261 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-22 22:36:44,261 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-22 22:36:44,261 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-22 22:36:44,261 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-22 22:36:44,262 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/ultimate/releaseScripts/default/UAutomizer-linux/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/ultimate/releaseScripts/default/UAutomizer-linux
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 -> 5057001587b31af0d9267b7a81b3d3f3e516585c42fa14cc5f4375d56abd7166
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true
[2023-11-22 22:36:44,460 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-22 22:36:44,484 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-22 22:36:44,485 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-22 22:36:44,486 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-22 22:36:44,487 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-22 22:36:44,487 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-programs/Problem101_label02.c
[2023-11-22 22:36:45,593 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-22 22:36:46,853 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-22 22:36:46,855 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-programs/Problem101_label02.c
[2023-11-22 22:36:46,972 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cbe4c1cc/5cb16d466b424c95a7f203c0eee9b538/FLAGa16037af1
[2023-11-22 22:36:46,982 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cbe4c1cc/5cb16d466b424c95a7f203c0eee9b538
[2023-11-22 22:36:46,983 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-22 22:36:46,984 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-22 22:36:46,985 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-22 22:36:46,985 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-22 22:36:46,988 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-22 22:36:46,989 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:36:46" (1/1) ...
[2023-11-22 22:36:46,990 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209d7751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:46, skipping insertion in model container
[2023-11-22 22:36:46,990 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:36:46" (1/1) ...
[2023-11-22 22:36:47,553 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-22 22:36:54,515 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-programs/Problem101_label02.c[2769695,2769708]
[2023-11-22 22:36:54,563 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-22 22:36:54,571 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-22 22:36:58,673 WARN  L240   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-programs/Problem101_label02.c[2769695,2769708]
[2023-11-22 22:36:58,681 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-22 22:36:59,709 INFO  L206         MainTranslator]: Completed translation
[2023-11-22 22:36:59,713 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59 WrapperNode
[2023-11-22 22:36:59,713 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-22 22:36:59,714 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-22 22:36:59,715 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-22 22:36:59,715 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-22 22:36:59,719 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:00,447 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:02,600 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83781
[2023-11-22 22:37:02,601 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-22 22:37:02,601 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-22 22:37:02,601 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-22 22:37:02,601 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-22 22:37:02,609 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:02,610 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:02,991 INFO  L184        PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:03,239 INFO  L189           HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2]
[2023-11-22 22:37:03,240 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:03,240 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:04,015 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:04,143 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:04,230 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:04,319 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:04,988 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-22 22:37:04,989 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-22 22:37:04,989 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-22 22:37:04,989 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-22 22:37:04,989 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (1/1) ...
[2023-11-22 22:37:05,008 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-22 22:37:05,016 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-11-22 22:37:05,050 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-22 22:37:05,056 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-22 22:37:05,094 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-22 22:37:05,094 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-11-22 22:37:05,094 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-22 22:37:05,094 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-22 22:37:05,221 INFO  L241             CfgBuilder]: Building ICFG
[2023-11-22 22:37:05,223 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-22 22:37:35,618 INFO  L282             CfgBuilder]: Performing block encoding
[2023-11-22 22:37:35,962 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-22 22:37:35,963 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-22 22:37:35,968 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:37:35 BoogieIcfgContainer
[2023-11-22 22:37:35,969 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-22 22:37:35,970 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-22 22:37:35,970 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-22 22:37:35,973 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-22 22:37:35,973 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:36:46" (1/3) ...
[2023-11-22 22:37:35,973 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8d97ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:37:35, skipping insertion in model container
[2023-11-22 22:37:35,974 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:59" (2/3) ...
[2023-11-22 22:37:35,974 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8d97ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:37:35, skipping insertion in model container
[2023-11-22 22:37:35,974 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:37:35" (3/3) ...
[2023-11-22 22:37:35,975 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem101_label02.c
[2023-11-22 22:37:35,988 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-22 22:37:35,988 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-22 22:37:36,144 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-22 22:37:36,150 INFO  L357      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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4766b374, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-22 22:37:36,151 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-22 22:37:36,180 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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)
[2023-11-22 22:37:36,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10105
[2023-11-22 22:37:36,936 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-22 22:37:36,941 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-22 22:37:36,942 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-22 22:37:36,946 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-22 22:37:36,949 INFO  L85        PathProgramCache]: Analyzing trace with hash 1574033138, now seen corresponding path program 1 times
[2023-11-22 22:37:36,955 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-22 22:37:36,955 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886316491]
[2023-11-22 22:37:36,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-22 22:37:36,957 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-22 22:37:39,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-22 22:37:58,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-22 22:37:58,333 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-22 22:37:58,333 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886316491]
[2023-11-22 22:37:58,334 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886316491] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-22 22:37:58,334 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-22 22:37:58,335 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-22 22:37:58,336 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096183193]
[2023-11-22 22:37:58,337 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-22 22:37:58,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-22 22:37:58,348 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-22 22:37:58,374 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-22 22:37:58,374 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-22 22:37:58,402 INFO  L87              Difference]: Start difference. First operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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) Second operand  has 2 states, 2 states have (on average 5052.0) internal successors, (10104), 2 states have internal predecessors, (10104), 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)
[2023-11-22 22:37:58,655 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-22 22:37:58,656 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-11-22 22:37:58,657 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-22 22:37:58,670 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5052.0) internal successors, (10104), 2 states have internal predecessors, (10104), 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) Word has length 10104
[2023-11-22 22:37:58,686 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-22 22:37:58,736 INFO  L225             Difference]: With dead ends: 20389
[2023-11-22 22:37:58,736 INFO  L226             Difference]: Without dead ends: 10193
[2023-11-22 22:37:58,755 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-22 22:37:58,759 INFO  L413           NwaCegarLoop]: 20273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-22 22:37:58,760 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-22 22:37:58,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-11-22 22:37:58,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-11-22 22:37:58,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10193 states, 10192 states have (on average 1.9891091051805339) internal successors, (20273), 10192 states have internal predecessors, (20273), 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)
[2023-11-22 22:37:58,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-11-22 22:37:58,993 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10104
[2023-11-22 22:37:59,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-22 22:37:59,008 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-11-22 22:37:59,011 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5052.0) internal successors, (10104), 2 states have internal predecessors, (10104), 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)
[2023-11-22 22:37:59,012 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-11-22 22:37:59,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10105
[2023-11-22 22:37:59,670 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-22 22:37:59,673 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-11-22 22:37:59,674 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-22 22:37:59,674 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-22 22:37:59,675 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-22 22:37:59,678 INFO  L85        PathProgramCache]: Analyzing trace with hash -1579843183, now seen corresponding path program 1 times
[2023-11-22 22:37:59,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-22 22:37:59,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158027066]
[2023-11-22 22:37:59,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-22 22:37:59,688 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-22 22:38:01,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat