/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:05:53,370 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:05:53,463 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 01:05:53,468 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:05:53,469 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:05:53,505 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:05:53,506 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:05:53,506 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:05:53,507 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:05:53,508 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:05:53,509 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:05:53,509 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:05:53,511 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:05:53,511 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:05:53,512 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:05:53,512 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:05:53,512 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:05:53,513 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:05:53,513 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:05:53,513 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:05:53,514 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:05:53,518 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:05:53,518 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:05:53,518 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:05:53,518 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:05:53,519 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:05:53,519 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:05:53,519 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:05:53,519 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:05:53,520 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:05:53,520 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:05:53,520 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:05:53,520 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:05:53,521 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:05:53,521 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:05:53,522 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:05:53,523 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:05:53,523 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:05:53,523 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:05:53,523 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:05:53,524 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:05:53,524 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:05:53,524 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:05:53,524 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:05:53,525 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:05:53,776 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:05:53,808 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:05:53,811 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:05:53,812 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:05:53,812 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:05:53,814 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i
[2024-11-03 01:05:55,328 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:05:55,537 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:05:55,538 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-99.i
[2024-11-03 01:05:55,549 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865487802/a5fe3bb5f85347ef926c243fe6c192a1/FLAG0a0dee337
[2024-11-03 01:05:55,912 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865487802/a5fe3bb5f85347ef926c243fe6c192a1
[2024-11-03 01:05:55,915 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:05:55,917 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:05:55,918 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:05:55,918 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:05:55,925 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:05:55,926 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:05:55" (1/1) ...
[2024-11-03 01:05:55,927 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce06c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:55, skipping insertion in model container
[2024-11-03 01:05:55,927 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:05:55" (1/1) ...
[2024-11-03 01:05:55,960 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:05:56,119 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_amount100_file-99.i[916,929]
[2024-11-03 01:05:56,198 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:05:56,212 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:05:56,224 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_amount100_file-99.i[916,929]
[2024-11-03 01:05:56,261 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:05:56,290 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:05:56,293 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56 WrapperNode
[2024-11-03 01:05:56,294 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:05:56,296 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:05:56,296 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:05:56,296 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:05:56,303 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,324 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,355 INFO  L138                Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 208
[2024-11-03 01:05:56,356 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:05:56,356 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:05:56,357 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:05:56,357 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:05:56,367 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,367 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,372 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,388 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].
[2024-11-03 01:05:56,388 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,388 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,399 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,403 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,406 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,408 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,415 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:05:56,416 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:05:56,416 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:05:56,417 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:05:56,417 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (1/1) ...
[2024-11-03 01:05:56,428 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:05:56,448 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:05:56,466 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)
[2024-11-03 01:05:56,481 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
[2024-11-03 01:05:56,503 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:05:56,503 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:05:56,504 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:05:56,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:05:56,504 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:05:56,504 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:05:56,591 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:05:56,593 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:05:58,142 INFO  L?                        ?]: Removed 30 outVars from TransFormulas that were not future-live.
[2024-11-03 01:05:58,142 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:05:58,165 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:05:58,165 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:05:58,166 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:05:58 BoogieIcfgContainer
[2024-11-03 01:05:58,166 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:05:58,170 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:05:58,171 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:05:58,175 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:05:58,176 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:05:55" (1/3) ...
[2024-11-03 01:05:58,176 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d5bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:05:58, skipping insertion in model container
[2024-11-03 01:05:58,176 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:05:56" (2/3) ...
[2024-11-03 01:05:58,177 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d5bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:05:58, skipping insertion in model container
[2024-11-03 01:05:58,177 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:05:58" (3/3) ...
[2024-11-03 01:05:58,178 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-99.i
[2024-11-03 01:05:58,195 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:05:58,195 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:05:58,256 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:05:58,261 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;@4f2b7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:05:58,261 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:05:58,267 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 89 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 62 states have internal predecessors, (90), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2024-11-03 01:05:58,285 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2024-11-03 01:05:58,286 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:05:58,287 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:05:58,287 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:05:58,293 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:05:58,294 INFO  L85        PathProgramCache]: Analyzing trace with hash 30523677, now seen corresponding path program 1 times
[2024-11-03 01:05:58,303 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:05:58,304 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010439829]
[2024-11-03 01:05:58,304 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:05:58,306 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:05:58,307 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:05:58,310 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:05:58,313 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 01:05:58,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:05:58,819 INFO  L255         TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:05:58,829 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:05:58,877 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:05:58,877 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:05:59,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:05:59,079 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:05:59,079 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010439829]
[2024-11-03 01:05:59,079 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1010439829] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:05:59,080 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:05:59,080 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:05:59,082 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093559462]
[2024-11-03 01:05:59,083 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:05:59,089 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:05:59,089 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:05:59,112 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:05:59,113 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:05:59,116 INFO  L87              Difference]: Start difference. First operand  has 89 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 62 states have internal predecessors, (90), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25)
[2024-11-03 01:05:59,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:05:59,145 INFO  L93              Difference]: Finished difference Result 171 states and 299 transitions.
[2024-11-03 01:05:59,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:05:59,147 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 165
[2024-11-03 01:05:59,148 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:05:59,157 INFO  L225             Difference]: With dead ends: 171
[2024-11-03 01:05:59,157 INFO  L226             Difference]: Without dead ends: 85
[2024-11-03 01:05:59,161 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:05:59,163 INFO  L432           NwaCegarLoop]: 132 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, 132 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
[2024-11-03 01:05:59,164 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:05:59,179 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2024-11-03 01:05:59,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2024-11-03 01:05:59,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 58 states have internal predecessors, (82), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2024-11-03 01:05:59,220 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 132 transitions.
[2024-11-03 01:05:59,225 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 132 transitions. Word has length 165
[2024-11-03 01:05:59,226 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:05:59,226 INFO  L471      AbstractCegarLoop]: Abstraction has 85 states and 132 transitions.
[2024-11-03 01:05:59,226 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25)
[2024-11-03 01:05:59,227 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 132 transitions.
[2024-11-03 01:05:59,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2024-11-03 01:05:59,237 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:05:59,237 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:05:59,245 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 01:05:59,438 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:05:59,439 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:05:59,439 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:05:59,440 INFO  L85        PathProgramCache]: Analyzing trace with hash -1247852466, now seen corresponding path program 1 times
[2024-11-03 01:05:59,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:05:59,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457195326]
[2024-11-03 01:05:59,440 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:05:59,440 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:05:59,440 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:05:59,442 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:05:59,443 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 01:05:59,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:05:59,893 INFO  L255         TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:05:59,899 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:06:00,465 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:00,465 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:06:00,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:00,810 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:06:00,810 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457195326]
[2024-11-03 01:06:00,810 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [457195326] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:06:00,810 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:06:00,810 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4
[2024-11-03 01:06:00,811 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49091900]
[2024-11-03 01:06:00,811 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:06:00,813 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 01:06:00,813 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:06:00,814 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 01:06:00,814 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 01:06:00,815 INFO  L87              Difference]: Start difference. First operand 85 states and 132 transitions. Second operand  has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:01,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:06:01,727 INFO  L93              Difference]: Finished difference Result 329 states and 515 transitions.
[2024-11-03 01:06:01,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 01:06:01,728 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 166
[2024-11-03 01:06:01,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:06:01,733 INFO  L225             Difference]: With dead ends: 329
[2024-11-03 01:06:01,733 INFO  L226             Difference]: Without dead ends: 247
[2024-11-03 01:06:01,736 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 01:06:01,737 INFO  L432           NwaCegarLoop]: 142 mSDtfsCounter, 139 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-03 01:06:01,738 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 330 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-03 01:06:01,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 247 states.
[2024-11-03 01:06:01,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 163.
[2024-11-03 01:06:01,782 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163 states, 110 states have (on average 1.4) internal successors, (154), 110 states have internal predecessors, (154), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2024-11-03 01:06:01,785 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 254 transitions.
[2024-11-03 01:06:01,786 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 254 transitions. Word has length 166
[2024-11-03 01:06:01,786 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:06:01,787 INFO  L471      AbstractCegarLoop]: Abstraction has 163 states and 254 transitions.
[2024-11-03 01:06:01,788 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:01,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 254 transitions.
[2024-11-03 01:06:01,792 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2024-11-03 01:06:01,792 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:06:01,793 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:06:01,799 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 01:06:01,993 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:01,994 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:06:01,995 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:06:01,995 INFO  L85        PathProgramCache]: Analyzing trace with hash 2025366357, now seen corresponding path program 1 times
[2024-11-03 01:06:01,995 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:06:01,995 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321227109]
[2024-11-03 01:06:01,995 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:06:01,996 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:01,996 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:06:01,997 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:06:01,999 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-03 01:06:02,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:06:02,435 INFO  L255         TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 01:06:02,439 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:06:02,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:02,532 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:06:02,673 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:02,673 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:06:02,673 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321227109]
[2024-11-03 01:06:02,673 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [321227109] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:06:02,673 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:06:02,674 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5
[2024-11-03 01:06:02,674 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752486747]
[2024-11-03 01:06:02,674 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:06:02,675 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-03 01:06:02,675 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:06:02,678 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-03 01:06:02,678 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-03 01:06:02,678 INFO  L87              Difference]: Start difference. First operand 163 states and 254 transitions. Second operand  has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25)
[2024-11-03 01:06:03,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:06:03,406 INFO  L93              Difference]: Finished difference Result 467 states and 724 transitions.
[2024-11-03 01:06:03,407 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:06:03,407 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167
[2024-11-03 01:06:03,408 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:06:03,411 INFO  L225             Difference]: With dead ends: 467
[2024-11-03 01:06:03,411 INFO  L226             Difference]: Without dead ends: 307
[2024-11-03 01:06:03,412 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2024-11-03 01:06:03,413 INFO  L432           NwaCegarLoop]: 228 mSDtfsCounter, 156 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-03 01:06:03,413 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 384 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-03 01:06:03,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2024-11-03 01:06:03,453 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 185.
[2024-11-03 01:06:03,454 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 185 states, 132 states have (on average 1.3181818181818181) internal successors, (174), 132 states have internal predecessors, (174), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2024-11-03 01:06:03,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 274 transitions.
[2024-11-03 01:06:03,458 INFO  L78                 Accepts]: Start accepts. Automaton has 185 states and 274 transitions. Word has length 167
[2024-11-03 01:06:03,458 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:06:03,458 INFO  L471      AbstractCegarLoop]: Abstraction has 185 states and 274 transitions.
[2024-11-03 01:06:03,459 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25)
[2024-11-03 01:06:03,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 185 states and 274 transitions.
[2024-11-03 01:06:03,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2024-11-03 01:06:03,462 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:06:03,463 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:06:03,469 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 01:06:03,663 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:03,664 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:06:03,665 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:06:03,665 INFO  L85        PathProgramCache]: Analyzing trace with hash 397647756, now seen corresponding path program 1 times
[2024-11-03 01:06:03,665 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:06:03,665 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347298646]
[2024-11-03 01:06:03,665 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:06:03,665 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:03,666 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:06:03,668 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:06:03,670 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-03 01:06:04,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:06:04,473 INFO  L255         TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:06:04,479 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:06:05,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:05,625 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:06:05,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:05,962 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:06:05,962 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347298646]
[2024-11-03 01:06:05,963 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1347298646] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:06:05,963 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:06:05,963 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:06:05,963 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430836485]
[2024-11-03 01:06:05,963 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:06:05,964 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:06:05,964 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:06:05,965 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:06:05,965 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:06:05,965 INFO  L87              Difference]: Start difference. First operand 185 states and 274 transitions. Second operand  has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:07,652 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:06:07,652 INFO  L93              Difference]: Finished difference Result 486 states and 717 transitions.
[2024-11-03 01:06:07,667 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:06:07,668 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 168
[2024-11-03 01:06:07,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:06:07,671 INFO  L225             Difference]: With dead ends: 486
[2024-11-03 01:06:07,671 INFO  L226             Difference]: Without dead ends: 304
[2024-11-03 01:06:07,672 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:06:07,673 INFO  L432           NwaCegarLoop]: 124 mSDtfsCounter, 151 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2024-11-03 01:06:07,674 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 620 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2024-11-03 01:06:07,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 304 states.
[2024-11-03 01:06:07,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 232.
[2024-11-03 01:06:07,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 232 states, 153 states have (on average 1.2745098039215685) internal successors, (195), 153 states have internal predecessors, (195), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)
[2024-11-03 01:06:07,719 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 345 transitions.
[2024-11-03 01:06:07,720 INFO  L78                 Accepts]: Start accepts. Automaton has 232 states and 345 transitions. Word has length 168
[2024-11-03 01:06:07,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:06:07,721 INFO  L471      AbstractCegarLoop]: Abstraction has 232 states and 345 transitions.
[2024-11-03 01:06:07,721 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:07,722 INFO  L276                IsEmpty]: Start isEmpty. Operand 232 states and 345 transitions.
[2024-11-03 01:06:07,724 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2024-11-03 01:06:07,724 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:06:07,725 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:06:07,739 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0
[2024-11-03 01:06:07,925 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:07,926 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:06:07,927 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:06:07,927 INFO  L85        PathProgramCache]: Analyzing trace with hash 1160158238, now seen corresponding path program 1 times
[2024-11-03 01:06:07,927 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:06:07,927 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497718379]
[2024-11-03 01:06:07,927 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:06:07,927 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:07,928 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:06:07,930 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:06:07,931 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-03 01:06:08,717 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:06:08,731 INFO  L255         TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 01:06:08,736 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:06:09,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:09,064 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:06:09,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:09,420 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:06:09,420 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497718379]
[2024-11-03 01:06:09,421 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [497718379] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:06:09,421 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:06:09,421 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:06:09,421 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399130180]
[2024-11-03 01:06:09,421 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:06:09,422 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:06:09,422 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:06:09,422 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:06:09,423 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:06:09,423 INFO  L87              Difference]: Start difference. First operand 232 states and 345 transitions. Second operand  has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:10,466 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:06:10,466 INFO  L93              Difference]: Finished difference Result 486 states and 716 transitions.
[2024-11-03 01:06:10,480 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:06:10,481 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 169
[2024-11-03 01:06:10,481 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:06:10,484 INFO  L225             Difference]: With dead ends: 486
[2024-11-03 01:06:10,484 INFO  L226             Difference]: Without dead ends: 304
[2024-11-03 01:06:10,485 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:06:10,488 INFO  L432           NwaCegarLoop]: 124 mSDtfsCounter, 92 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:06:10,488 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 850 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-03 01:06:10,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 304 states.
[2024-11-03 01:06:10,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 233.
[2024-11-03 01:06:10,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 233 states, 154 states have (on average 1.2727272727272727) internal successors, (196), 154 states have internal predecessors, (196), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)
[2024-11-03 01:06:10,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 346 transitions.
[2024-11-03 01:06:10,535 INFO  L78                 Accepts]: Start accepts. Automaton has 233 states and 346 transitions. Word has length 169
[2024-11-03 01:06:10,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:06:10,535 INFO  L471      AbstractCegarLoop]: Abstraction has 233 states and 346 transitions.
[2024-11-03 01:06:10,537 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:10,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 233 states and 346 transitions.
[2024-11-03 01:06:10,538 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2024-11-03 01:06:10,538 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:06:10,539 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:06:10,549 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0
[2024-11-03 01:06:10,739 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:10,740 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:06:10,740 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:06:10,740 INFO  L85        PathProgramCache]: Analyzing trace with hash 992251073, now seen corresponding path program 1 times
[2024-11-03 01:06:10,740 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:06:10,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303114605]
[2024-11-03 01:06:10,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:06:10,741 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:10,741 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:06:10,743 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:06:10,744 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-11-03 01:06:11,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:06:11,576 INFO  L255         TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:06:11,580 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:06:12,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:12,257 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:06:12,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2024-11-03 01:06:12,479 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:06:12,479 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303114605]
[2024-11-03 01:06:12,479 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [303114605] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:06:12,479 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:06:12,479 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:06:12,480 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463069868]
[2024-11-03 01:06:12,480 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:06:12,480 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:06:12,480 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:06:12,481 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:06:12,481 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:06:12,481 INFO  L87              Difference]: Start difference. First operand 233 states and 346 transitions. Second operand  has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:13,792 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:06:13,792 INFO  L93              Difference]: Finished difference Result 486 states and 715 transitions.
[2024-11-03 01:06:13,802 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:06:13,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 170
[2024-11-03 01:06:13,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:06:13,805 INFO  L225             Difference]: With dead ends: 486
[2024-11-03 01:06:13,805 INFO  L226             Difference]: Without dead ends: 304
[2024-11-03 01:06:13,806 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:06:13,807 INFO  L432           NwaCegarLoop]: 122 mSDtfsCounter, 77 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:06:13,807 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 718 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-03 01:06:13,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 304 states.
[2024-11-03 01:06:13,828 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 234.
[2024-11-03 01:06:13,829 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 234 states, 155 states have (on average 1.270967741935484) internal successors, (197), 155 states have internal predecessors, (197), 75 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75)
[2024-11-03 01:06:13,831 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 347 transitions.
[2024-11-03 01:06:13,831 INFO  L78                 Accepts]: Start accepts. Automaton has 234 states and 347 transitions. Word has length 170
[2024-11-03 01:06:13,832 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:06:13,832 INFO  L471      AbstractCegarLoop]: Abstraction has 234 states and 347 transitions.
[2024-11-03 01:06:13,832 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50)
[2024-11-03 01:06:13,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 234 states and 347 transitions.
[2024-11-03 01:06:13,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2024-11-03 01:06:13,834 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:06:13,834 INFO  L215           NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:06:13,846 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0
[2024-11-03 01:06:14,034 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:14,035 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:06:14,035 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:06:14,036 INFO  L85        PathProgramCache]: Analyzing trace with hash -813187261, now seen corresponding path program 1 times
[2024-11-03 01:06:14,036 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:06:14,036 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596276366]
[2024-11-03 01:06:14,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:06:14,036 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:06:14,036 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:06:14,037 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:06:14,038 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process
[2024-11-03 01:06:15,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:06:15,974 INFO  L255         TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 56 conjuncts are in the unsatisfiable core
[2024-11-03 01:06:15,981 INFO  L278         TraceCheckSpWp]: Computing forward predicates...