/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 08:59:44,291 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 08:59:44,336 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 08:59:44,339 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 08:59:44,339 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 08:59:44,356 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 08:59:44,356 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 08:59:44,357 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 08:59:44,357 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 08:59:44,357 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 08:59:44,357 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 08:59:44,358 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 08:59:44,358 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 08:59:44,358 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 08:59:44,358 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 08:59:44,359 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 08:59:44,359 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 08:59:44,362 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 08:59:44,362 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 08:59:44,363 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 08:59:44,363 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 08:59:44,363 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 08:59:44,363 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 08:59:44,363 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 08:59:44,363 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 08:59:44,364 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 08:59:44,364 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 08:59:44,364 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 08:59:44,364 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 08:59:44,364 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 08:59:44,364 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 08:59:44,364 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:59:44,365 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 08:59:44,365 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 08:59:44,366 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 08:59:44,371 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 08:59:44,371 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 08:59:44,371 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 08:59:44,371 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 08:59:44,616 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 08:59:44,638 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 08:59:44,642 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 08:59:44,643 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 08:59:44,644 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 08:59:44,645 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i
[2024-11-06 08:59:45,981 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 08:59:46,153 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 08:59:46,153 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i
[2024-11-06 08:59:46,159 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3161c3e6/0ebe9a9575b6443d8b117a70f7430e8d/FLAG2c040326a
[2024-11-06 08:59:46,558 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3161c3e6/0ebe9a9575b6443d8b117a70f7430e8d
[2024-11-06 08:59:46,560 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 08:59:46,561 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 08:59:46,562 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 08:59:46,562 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 08:59:46,568 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 08:59:46,569 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,570 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c15c236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46, skipping insertion in model container
[2024-11-06 08:59:46,570 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,589 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 08:59:46,721 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i[915,928]
[2024-11-06 08:59:46,767 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:59:46,782 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 08:59:46,791 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i[915,928]
[2024-11-06 08:59:46,809 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:59:46,823 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 08:59:46,824 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46 WrapperNode
[2024-11-06 08:59:46,824 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 08:59:46,825 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 08:59:46,825 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 08:59:46,825 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 08:59:46,830 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,838 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,860 INFO  L138                Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124
[2024-11-06 08:59:46,860 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 08:59:46,861 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 08:59:46,861 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 08:59:46,861 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 08:59:46,877 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,877 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,884 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,896 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].
[2024-11-06 08:59:46,897 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,897 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,902 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,904 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,906 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,907 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,910 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 08:59:46,911 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 08:59:46,911 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 08:59:46,911 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 08:59:46,912 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (1/1) ...
[2024-11-06 08:59:46,923 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:59:46,933 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:59:46,951 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-06 08:59:46,953 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-06 08:59:46,974 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 08:59:46,974 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 08:59:46,974 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 08:59:46,974 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 08:59:46,974 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 08:59:46,974 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 08:59:47,052 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 08:59:47,054 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 08:59:47,375 INFO  L?                        ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-06 08:59:47,375 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 08:59:47,392 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 08:59:47,393 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 08:59:47,393 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:47 BoogieIcfgContainer
[2024-11-06 08:59:47,393 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 08:59:47,397 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 08:59:47,397 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 08:59:47,400 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 08:59:47,400 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:59:46" (1/3) ...
[2024-11-06 08:59:47,400 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189ea729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:47, skipping insertion in model container
[2024-11-06 08:59:47,400 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:46" (2/3) ...
[2024-11-06 08:59:47,401 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189ea729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:47, skipping insertion in model container
[2024-11-06 08:59:47,401 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:47" (3/3) ...
[2024-11-06 08:59:47,402 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-34.i
[2024-11-06 08:59:47,415 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 08:59:47,416 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 08:59:47,476 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 08:59:47,483 INFO  L333      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=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;@22c5406d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 08:59:47,484 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 08:59:47,490 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 52 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-06 08:59:47,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2024-11-06 08:59:47,498 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:59:47,498 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:59:47,499 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:59:47,503 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:59:47,504 INFO  L85        PathProgramCache]: Analyzing trace with hash 945974761, now seen corresponding path program 1 times
[2024-11-06 08:59:47,515 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:59:47,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404867001]
[2024-11-06 08:59:47,516 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:59:47,516 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:47,518 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:59:47,522 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:59:47,529 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-06 08:59:47,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:59:47,667 INFO  L255         TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 08:59:47,674 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:59:47,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-06 08:59:47,706 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:59:47,707 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:59:47,707 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404867001]
[2024-11-06 08:59:47,707 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [404867001] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:59:47,707 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:59:47,708 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 08:59:47,709 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811248402]
[2024-11-06 08:59:47,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:59:47,712 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 08:59:47,712 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:59:47,727 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 08:59:47,727 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:59:47,729 INFO  L87              Difference]: Start difference. First operand  has 52 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13)
[2024-11-06 08:59:47,745 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:59:47,746 INFO  L93              Difference]: Finished difference Result 97 states and 163 transitions.
[2024-11-06 08:59:47,748 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 08:59:47,748 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90
[2024-11-06 08:59:47,749 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:59:47,755 INFO  L225             Difference]: With dead ends: 97
[2024-11-06 08:59:47,755 INFO  L226             Difference]: Without dead ends: 48
[2024-11-06 08:59:47,758 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:59:47,761 INFO  L432           NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 08:59:47,761 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 08:59:47,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2024-11-06 08:59:47,787 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2024-11-06 08:59:47,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-06 08:59:47,789 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 71 transitions.
[2024-11-06 08:59:47,790 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 71 transitions. Word has length 90
[2024-11-06 08:59:47,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:59:47,790 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 71 transitions.
[2024-11-06 08:59:47,791 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13)
[2024-11-06 08:59:47,791 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 71 transitions.
[2024-11-06 08:59:47,793 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2024-11-06 08:59:47,793 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:59:47,794 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:59:47,811 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-06 08:59:47,997 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:47,998 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:59:47,998 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:59:47,999 INFO  L85        PathProgramCache]: Analyzing trace with hash 2128279915, now seen corresponding path program 1 times
[2024-11-06 08:59:48,000 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:59:48,000 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331984683]
[2024-11-06 08:59:48,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:59:48,000 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:48,000 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:59:48,002 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:59:48,004 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-06 08:59:48,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:59:48,129 INFO  L255         TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-06 08:59:48,132 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:59:48,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-06 08:59:48,311 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:59:48,311 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:59:48,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331984683]
[2024-11-06 08:59:48,312 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [331984683] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:59:48,312 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:59:48,312 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-06 08:59:48,314 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767677679]
[2024-11-06 08:59:48,314 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:59:48,315 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-06 08:59:48,315 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:59:48,316 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-06 08:59:48,317 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 08:59:48,317 INFO  L87              Difference]: Start difference. First operand 48 states and 71 transitions. Second operand  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-06 08:59:48,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:59:48,461 INFO  L93              Difference]: Finished difference Result 157 states and 235 transitions.
[2024-11-06 08:59:48,465 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-06 08:59:48,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90
[2024-11-06 08:59:48,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:59:48,468 INFO  L225             Difference]: With dead ends: 157
[2024-11-06 08:59:48,468 INFO  L226             Difference]: Without dead ends: 112
[2024-11-06 08:59:48,469 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-06 08:59:48,470 INFO  L432           NwaCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-06 08:59:48,471 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 216 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-06 08:59:48,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2024-11-06 08:59:48,490 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93.
[2024-11-06 08:59:48,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-06 08:59:48,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 139 transitions.
[2024-11-06 08:59:48,493 INFO  L78                 Accepts]: Start accepts. Automaton has 93 states and 139 transitions. Word has length 90
[2024-11-06 08:59:48,493 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:59:48,493 INFO  L471      AbstractCegarLoop]: Abstraction has 93 states and 139 transitions.
[2024-11-06 08:59:48,494 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-06 08:59:48,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 93 states and 139 transitions.
[2024-11-06 08:59:48,495 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2024-11-06 08:59:48,495 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:59:48,496 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:59:48,510 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-06 08:59:48,696 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:48,697 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:59:48,697 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:59:48,697 INFO  L85        PathProgramCache]: Analyzing trace with hash -981760802, now seen corresponding path program 1 times
[2024-11-06 08:59:48,698 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:59:48,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951678519]
[2024-11-06 08:59:48,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:59:48,699 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:48,699 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:59:48,701 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:59:48,702 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-06 08:59:48,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:59:48,799 INFO  L255         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-06 08:59:48,802 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:59:49,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-06 08:59:49,205 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:59:49,205 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:59:49,205 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951678519]
[2024-11-06 08:59:49,205 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951678519] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:59:49,205 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:59:49,205 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-06 08:59:49,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398437385]
[2024-11-06 08:59:49,206 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:59:49,206 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-06 08:59:49,206 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:59:49,207 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-06 08:59:49,207 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-06 08:59:49,207 INFO  L87              Difference]: Start difference. First operand 93 states and 139 transitions. Second operand  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-06 08:59:49,511 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:59:49,511 INFO  L93              Difference]: Finished difference Result 308 states and 463 transitions.
[2024-11-06 08:59:49,512 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-06 08:59:49,512 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91
[2024-11-06 08:59:49,512 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:59:49,514 INFO  L225             Difference]: With dead ends: 308
[2024-11-06 08:59:49,514 INFO  L226             Difference]: Without dead ends: 218
[2024-11-06 08:59:49,515 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-11-06 08:59:49,516 INFO  L432           NwaCegarLoop]: 107 mSDtfsCounter, 80 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-06 08:59:49,516 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 267 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-06 08:59:49,517 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 218 states.
[2024-11-06 08:59:49,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 177.
[2024-11-06 08:59:49,541 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 177 states, 120 states have (on average 1.3333333333333333) internal successors, (160), 120 states have internal predecessors, (160), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52)
[2024-11-06 08:59:49,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 264 transitions.
[2024-11-06 08:59:49,543 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 264 transitions. Word has length 91
[2024-11-06 08:59:49,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:59:49,543 INFO  L471      AbstractCegarLoop]: Abstraction has 177 states and 264 transitions.
[2024-11-06 08:59:49,544 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-06 08:59:49,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 264 transitions.
[2024-11-06 08:59:49,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2024-11-06 08:59:49,545 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:59:49,545 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:59:49,564 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-06 08:59:49,746 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:49,746 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:59:49,747 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:59:49,747 INFO  L85        PathProgramCache]: Analyzing trace with hash 860370291, now seen corresponding path program 1 times
[2024-11-06 08:59:49,747 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:59:49,747 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907954030]
[2024-11-06 08:59:49,747 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:59:49,748 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:49,748 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:59:49,749 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:59:49,750 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-06 08:59:49,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:59:49,828 INFO  L255         TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-06 08:59:49,831 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:59:49,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked.
[2024-11-06 08:59:49,942 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:59:49,942 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:59:49,943 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907954030]
[2024-11-06 08:59:49,943 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907954030] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:59:49,943 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:59:49,943 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2024-11-06 08:59:49,943 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961924242]
[2024-11-06 08:59:49,943 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:59:49,944 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-06 08:59:49,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:59:49,946 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-06 08:59:49,947 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-11-06 08:59:49,947 INFO  L87              Difference]: Start difference. First operand 177 states and 264 transitions. Second operand  has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13)
[2024-11-06 08:59:50,358 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:59:50,358 INFO  L93              Difference]: Finished difference Result 307 states and 429 transitions.
[2024-11-06 08:59:50,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2024-11-06 08:59:50,359 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92
[2024-11-06 08:59:50,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:59:50,361 INFO  L225             Difference]: With dead ends: 307
[2024-11-06 08:59:50,361 INFO  L226             Difference]: Without dead ends: 219
[2024-11-06 08:59:50,361 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420
[2024-11-06 08:59:50,362 INFO  L432           NwaCegarLoop]: 77 mSDtfsCounter, 125 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-06 08:59:50,362 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 283 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-06 08:59:50,363 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2024-11-06 08:59:50,385 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 209.
[2024-11-06 08:59:50,385 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 209 states, 144 states have (on average 1.25) internal successors, (180), 144 states have internal predecessors, (180), 52 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52)
[2024-11-06 08:59:50,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 284 transitions.
[2024-11-06 08:59:50,387 INFO  L78                 Accepts]: Start accepts. Automaton has 209 states and 284 transitions. Word has length 92
[2024-11-06 08:59:50,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:59:50,387 INFO  L471      AbstractCegarLoop]: Abstraction has 209 states and 284 transitions.
[2024-11-06 08:59:50,388 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13)
[2024-11-06 08:59:50,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 209 states and 284 transitions.
[2024-11-06 08:59:50,393 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2024-11-06 08:59:50,393 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:59:50,393 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:59:50,411 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-06 08:59:50,593 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:50,594 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:59:50,594 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:59:50,594 INFO  L85        PathProgramCache]: Analyzing trace with hash -150746959, now seen corresponding path program 1 times
[2024-11-06 08:59:50,595 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:59:50,595 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500105359]
[2024-11-06 08:59:50,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:59:50,595 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:59:50,595 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:59:50,599 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:59:50,600 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-06 08:59:50,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:59:50,683 INFO  L255         TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-11-06 08:59:50,687 INFO  L278         TraceCheckSpWp]: Computing forward predicates...