/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 bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 13:38:05,295 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 13:38:05,330 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 13:38:05,333 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 13:38:05,333 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 13:38:05,357 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 13:38:05,357 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 13:38:05,358 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 13:38:05,358 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 13:38:05,359 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 13:38:05,359 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 13:38:05,359 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 13:38:05,360 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 13:38:05,361 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 13:38:05,361 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 13:38:05,361 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 13:38:05,362 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 13:38:05,362 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 13:38:05,362 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 13:38:05,362 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 13:38:05,362 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 13:38:05,364 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 13:38:05,364 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 13:38:05,364 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 13:38:05,365 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 13:38:05,365 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 13:38:05,365 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 13:38:05,365 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 13:38:05,365 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 13:38:05,365 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 13:38:05,365 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 13:38:05,366 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 13:38:05,366 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 13:38:05,366 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 13:38:05,366 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:38:05,366 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 13:38:05,366 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 13:38:05,366 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 13:38:05,367 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 13:38:05,367 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 13:38:05,367 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 13:38:05,368 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 13:38:05,368 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 13:38:05,368 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 13:38:05,368 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 13:38:05,543 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 13:38:05,575 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 13:38:05,580 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 13:38:05,581 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 13:38:05,585 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 13:38:05,590 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-03 13:38:06,896 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 13:38:07,039 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 13:38:07,039 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-03 13:38:07,044 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0011cd08e/b005c9ed7f104f38bd7fbf890e84a046/FLAG887803e3c
[2024-11-03 13:38:07,472 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0011cd08e/b005c9ed7f104f38bd7fbf890e84a046
[2024-11-03 13:38:07,474 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 13:38:07,475 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 13:38:07,476 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 13:38:07,476 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 13:38:07,488 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 13:38:07,488 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,489 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f7a24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07, skipping insertion in model container
[2024-11-03 13:38:07,489 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,519 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:38:07,706 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-11-03 13:38:07,724 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:38:07,731 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:38:07,740 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-11-03 13:38:07,746 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:38:07,767 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:38:07,768 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07 WrapperNode
[2024-11-03 13:38:07,768 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:38:07,769 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:38:07,769 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:38:07,769 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:38:07,778 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,792 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,812 INFO  L138                Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57
[2024-11-03 13:38:07,812 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:38:07,812 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:38:07,812 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:38:07,813 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:38:07,829 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,830 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,836 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,854 INFO  L175           MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-11-03 13:38:07,854 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,854 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,863 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,872 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,873 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,874 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,875 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:38:07,881 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:38:07,881 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:38:07,881 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:38:07,882 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (1/1) ...
[2024-11-03 13:38:07,889 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:38:07,900 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:38:07,917 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 13:38:07,926 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 13:38:07,941 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:38:07,941 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0
[2024-11-03 13:38:07,941 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1
[2024-11-03 13:38:07,966 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:38:07,966 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-11-03 13:38:07,966 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-11-03 13:38:07,966 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:38:07,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:38:07,967 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0
[2024-11-03 13:38:07,967 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1
[2024-11-03 13:38:07,967 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-11-03 13:38:08,028 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:38:08,029 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:38:08,156 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 13:38:08,156 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:38:08,170 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:38:08,171 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-03 13:38:08,171 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:38:08 BoogieIcfgContainer
[2024-11-03 13:38:08,171 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:38:08,172 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:38:08,173 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:38:08,175 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:38:08,176 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:38:07" (1/3) ...
[2024-11-03 13:38:08,177 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3db42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:38:08, skipping insertion in model container
[2024-11-03 13:38:08,177 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:38:07" (2/3) ...
[2024-11-03 13:38:08,178 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3db42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:38:08, skipping insertion in model container
[2024-11-03 13:38:08,178 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:38:08" (3/3) ...
[2024-11-03 13:38:08,180 INFO  L112   eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c
[2024-11-03 13:38:08,193 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:38:08,193 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:38:08,237 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:38:08,243 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;@33d2ca80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:38:08,243 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:38:08,247 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-03 13:38:08,251 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:38:08,252 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:38:08,252 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:38:08,257 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:38:08,257 INFO  L85        PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times
[2024-11-03 13:38:08,263 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:38:08,264 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667045440]
[2024-11-03 13:38:08,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:38:08,266 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:38:08,266 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:08,268 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:38:08,269 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:38:08,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:38:08,333 INFO  L255         TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 13:38:08,336 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:38:08,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:08,360 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:38:08,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:08,372 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:38:08,372 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667045440]
[2024-11-03 13:38:08,372 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1667045440] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:38:08,372 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:38:08,372 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-03 13:38:08,374 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750049927]
[2024-11-03 13:38:08,374 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:38:08,377 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 13:38:08,377 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:38:08,391 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 13:38:08,391 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 13:38:08,393 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:38:08,432 INFO  L93              Difference]: Finished difference Result 31 states and 45 transitions.
[2024-11-03 13:38:08,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-03 13:38:08,434 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-03 13:38:08,434 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:38:08,439 INFO  L225             Difference]: With dead ends: 31
[2024-11-03 13:38:08,439 INFO  L226             Difference]: Without dead ends: 17
[2024-11-03 13:38:08,442 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 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 13:38:08,445 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 13:38:08,446 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:38:08,460 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-11-03 13:38:08,468 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13.
[2024-11-03 13:38:08,469 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2024-11-03 13:38:08,470 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8
[2024-11-03 13:38:08,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:38:08,470 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2024-11-03 13:38:08,471 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2024-11-03 13:38:08,471 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-03 13:38:08,472 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:38:08,472 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:38:08,474 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 13:38:08,672 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:08,673 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:38:08,673 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:38:08,673 INFO  L85        PathProgramCache]: Analyzing trace with hash 780776823, now seen corresponding path program 1 times
[2024-11-03 13:38:08,674 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:38:08,674 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307765925]
[2024-11-03 13:38:08,674 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:38:08,674 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:38:08,674 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:08,676 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:38:08,677 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:38:08,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:38:08,706 INFO  L255         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 13:38:08,708 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:38:08,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:08,741 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:38:08,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:08,778 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:38:08,778 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307765925]
[2024-11-03 13:38:08,778 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [307765925] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 13:38:08,778 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 13:38:08,778 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-11-03 13:38:08,779 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445694498]
[2024-11-03 13:38:08,779 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 13:38:08,780 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 13:38:08,780 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:38:08,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 13:38:08,780 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-11-03 13:38:08,781 INFO  L87              Difference]: Start difference. First operand 13 states and 14 transitions. Second operand  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,869 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:38:08,869 INFO  L93              Difference]: Finished difference Result 31 states and 38 transitions.
[2024-11-03 13:38:08,870 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-03 13:38:08,870 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2024-11-03 13:38:08,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:38:08,870 INFO  L225             Difference]: With dead ends: 31
[2024-11-03 13:38:08,871 INFO  L226             Difference]: Without dead ends: 25
[2024-11-03 13:38:08,871 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-11-03 13:38:08,872 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-03 13:38:08,873 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-03 13:38:08,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-03 13:38:08,878 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21.
[2024-11-03 13:38:08,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2024-11-03 13:38:08,879 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12
[2024-11-03 13:38:08,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:38:08,880 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2024-11-03 13:38:08,880 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:08,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2024-11-03 13:38:08,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-11-03 13:38:08,881 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:38:08,881 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:38:08,885 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 13:38:09,083 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:09,084 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:38:09,085 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:38:09,085 INFO  L85        PathProgramCache]: Analyzing trace with hash -2109281665, now seen corresponding path program 2 times
[2024-11-03 13:38:09,085 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:38:09,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622053323]
[2024-11-03 13:38:09,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:38:09,085 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:38:09,086 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:09,087 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:38:09,088 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:38:09,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:38:09,124 INFO  L255         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-11-03 13:38:09,126 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:38:09,202 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:09,202 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:38:09,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:09,355 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:38:09,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622053323]
[2024-11-03 13:38:09,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1622053323] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 13:38:09,355 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 13:38:09,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-03 13:38:09,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121551804]
[2024-11-03 13:38:09,356 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 13:38:09,356 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-03 13:38:09,356 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:38:09,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-03 13:38:09,358 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2024-11-03 13:38:09,359 INFO  L87              Difference]: Start difference. First operand 21 states and 22 transitions. Second operand  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:09,549 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:38:09,549 INFO  L93              Difference]: Finished difference Result 41 states and 49 transitions.
[2024-11-03 13:38:09,556 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-11-03 13:38:09,556 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20
[2024-11-03 13:38:09,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:38:09,557 INFO  L225             Difference]: With dead ends: 41
[2024-11-03 13:38:09,557 INFO  L226             Difference]: Without dead ends: 35
[2024-11-03 13:38:09,557 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342
[2024-11-03 13:38:09,558 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-03 13:38:09,558 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 44 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-03 13:38:09,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2024-11-03 13:38:09,562 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31.
[2024-11-03 13:38:09,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:09,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions.
[2024-11-03 13:38:09,563 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20
[2024-11-03 13:38:09,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:38:09,563 INFO  L471      AbstractCegarLoop]: Abstraction has 31 states and 32 transitions.
[2024-11-03 13:38:09,563 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:09,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions.
[2024-11-03 13:38:09,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-03 13:38:09,564 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:38:09,564 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:38:09,566 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 13:38:09,766 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:09,766 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:38:09,766 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:38:09,766 INFO  L85        PathProgramCache]: Analyzing trace with hash 2041591177, now seen corresponding path program 3 times
[2024-11-03 13:38:09,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:38:09,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060772076]
[2024-11-03 13:38:09,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:38:09,767 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:38:09,767 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:09,769 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:38:09,770 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 13:38:09,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:38:09,808 INFO  L255         TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 13:38:09,809 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:38:09,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-03 13:38:09,826 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:38:09,839 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-03 13:38:09,840 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:38:09,840 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060772076]
[2024-11-03 13:38:09,840 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2060772076] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:38:09,840 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:38:09,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-03 13:38:09,840 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442240562]
[2024-11-03 13:38:09,840 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:38:09,840 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 13:38:09,841 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:38:09,841 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 13:38:09,841 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:38:09,841 INFO  L87              Difference]: Start difference. First operand 31 states and 32 transitions. Second operand  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:09,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:38:09,863 INFO  L93              Difference]: Finished difference Result 38 states and 40 transitions.
[2024-11-03 13:38:09,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 13:38:09,864 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30
[2024-11-03 13:38:09,864 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:38:09,864 INFO  L225             Difference]: With dead ends: 38
[2024-11-03 13:38:09,865 INFO  L226             Difference]: Without dead ends: 33
[2024-11-03 13:38:09,865 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:38:09,865 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 13:38:09,866 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:38:09,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-11-03 13:38:09,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2024-11-03 13:38:09,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:09,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2024-11-03 13:38:09,869 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30
[2024-11-03 13:38:09,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:38:09,870 INFO  L471      AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2024-11-03 13:38:09,870 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:09,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2024-11-03 13:38:09,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-03 13:38:09,870 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:38:09,870 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:38:09,875 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0
[2024-11-03 13:38:10,072 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:10,072 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:38:10,072 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:38:10,073 INFO  L85        PathProgramCache]: Analyzing trace with hash -777640855, now seen corresponding path program 1 times
[2024-11-03 13:38:10,073 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:38:10,073 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858679556]
[2024-11-03 13:38:10,073 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:38:10,073 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:38:10,073 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:10,075 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:38:10,076 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process
[2024-11-03 13:38:10,127 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:38:10,128 WARN  L253         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 59 conjuncts are in the unsatisfiable core
[2024-11-03 13:38:10,138 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:38:10,179 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-03 13:38:10,202 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1
[2024-11-03 13:38:10,226 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2024-11-03 13:38:10,292 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2024-11-03 13:38:10,329 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12
[2024-11-03 13:38:10,378 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20
[2024-11-03 13:38:10,468 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:10,468 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23
[2024-11-03 13:38:10,543 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:10,543 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31
[2024-11-03 13:38:10,656 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:10,657 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42
[2024-11-03 13:38:10,770 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:10,771 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45
[2024-11-03 13:38:10,847 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:10,847 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53
[2024-11-03 13:38:10,980 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 57
[2024-11-03 13:38:11,071 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:11,071 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 78 treesize of output 42
[2024-11-03 13:38:12,586 INFO  L134       CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:38:12,587 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:38:12,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-11-03 13:38:12,862 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:38:12,862 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858679556]
[2024-11-03 13:38:12,862 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1858679556] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 13:38:12,862 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 13:38:12,863 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 6] total 26
[2024-11-03 13:38:12,863 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456982685]
[2024-11-03 13:38:12,863 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 13:38:12,863 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2024-11-03 13:38:12,863 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:38:12,868 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2024-11-03 13:38:12,868 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650
[2024-11-03 13:38:12,868 INFO  L87              Difference]: Start difference. First operand 33 states and 34 transitions. Second operand  has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:14,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:38:14,391 INFO  L93              Difference]: Finished difference Result 44 states and 49 transitions.
[2024-11-03 13:38:14,392 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2024-11-03 13:38:14,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32
[2024-11-03 13:38:14,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:38:14,396 INFO  L225             Difference]: With dead ends: 44
[2024-11-03 13:38:14,396 INFO  L226             Difference]: Without dead ends: 39
[2024-11-03 13:38:14,397 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056
[2024-11-03 13:38:14,397 INFO  L432           NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-03 13:38:14,398 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-03 13:38:14,398 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-11-03 13:38:14,413 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37.
[2024-11-03 13:38:14,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:14,414 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2024-11-03 13:38:14,414 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32
[2024-11-03 13:38:14,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:38:14,414 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2024-11-03 13:38:14,414 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-03 13:38:14,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2024-11-03 13:38:14,415 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-11-03 13:38:14,415 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:38:14,415 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:38:14,419 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0
[2024-11-03 13:38:14,618 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:14,619 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:38:14,619 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:38:14,619 INFO  L85        PathProgramCache]: Analyzing trace with hash 2139052585, now seen corresponding path program 2 times
[2024-11-03 13:38:14,619 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:38:14,619 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933895471]
[2024-11-03 13:38:14,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:38:14,619 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:38:14,620 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:38:14,622 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:38:14,630 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process
[2024-11-03 13:38:14,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:38:14,711 WARN  L253         TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 80 conjuncts are in the unsatisfiable core
[2024-11-03 13:38:14,716 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:38:14,727 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8
[2024-11-03 13:38:14,761 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20
[2024-11-03 13:38:14,807 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:14,807 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23
[2024-11-03 13:38:14,845 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:14,845 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31
[2024-11-03 13:38:14,922 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:14,922 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34
[2024-11-03 13:38:14,976 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:14,976 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42
[2024-11-03 13:38:15,067 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:15,067 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45
[2024-11-03 13:38:15,131 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:15,131 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 53
[2024-11-03 13:38:15,242 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:15,242 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64
[2024-11-03 13:38:15,389 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:15,389 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 75
[2024-11-03 13:38:15,541 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:15,542 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 78
[2024-11-03 13:38:15,671 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 86
[2024-11-03 13:38:16,903 INFO  L349             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2024-11-03 13:38:16,904 INFO  L378             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 175 treesize of output 95
[2024-11-03 13:39:05,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-03 13:39:05,686 INFO  L311         TraceCheckSpWp]: Computing backward predicates...