/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/hardness-nfm22/hardness_operatoramount_amount25_file-22.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 12:59:57,946 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 12:59:58,026 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 12:59:58,032 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 12:59:58,033 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 12:59:58,058 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 12:59:58,058 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 12:59:58,059 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 12:59:58,059 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 12:59:58,061 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 12:59:58,063 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 12:59:58,063 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 12:59:58,063 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 12:59:58,064 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 12:59:58,064 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 12:59:58,064 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 12:59:58,064 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 12:59:58,065 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 12:59:58,065 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 12:59:58,065 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 12:59:58,065 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 12:59:58,066 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 12:59:58,066 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 12:59:58,067 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 12:59:58,067 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 12:59:58,067 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 12:59:58,067 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 12:59:58,067 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 12:59:58,068 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 12:59:58,068 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 12:59:58,068 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 12:59:58,068 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 12:59:58,068 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 12:59:58,069 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 12:59:58,069 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 12:59:58,069 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 12:59:58,069 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 12:59:58,069 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 12:59:58,070 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 12:59:58,070 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 12:59:58,070 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 12:59:58,070 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 12:59:58,070 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 12:59:58,071 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 12:59:58,071 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 12:59:58,292 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 12:59:58,313 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 12:59:58,316 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 12:59:58,317 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 12:59:58,317 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 12:59:58,318 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-22.i
[2024-11-03 12:59:59,746 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 12:59:59,946 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 12:59:59,947 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-22.i
[2024-11-03 12:59:59,957 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1afc35279/7c2d5c22b9024f079fc46b670808681e/FLAG9bd7db2b0
[2024-11-03 12:59:59,975 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1afc35279/7c2d5c22b9024f079fc46b670808681e
[2024-11-03 12:59:59,978 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 12:59:59,979 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 12:59:59,981 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 12:59:59,981 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 12:59:59,987 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 12:59:59,987 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:59:59" (1/1) ...
[2024-11-03 12:59:59,988 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb6e34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:59, skipping insertion in model container
[2024-11-03 12:59:59,988 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:59:59" (1/1) ...
[2024-11-03 13:00:00,014 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:00:00,185 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_amount25_file-22.i[915,928]
[2024-11-03 13:00:00,243 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:00:00,262 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:00:00,275 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_amount25_file-22.i[915,928]
[2024-11-03 13:00:00,292 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:00:00,311 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:00:00,311 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00 WrapperNode
[2024-11-03 13:00:00,311 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:00:00,312 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:00:00,313 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:00:00,313 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:00:00,318 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,333 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,355 INFO  L138                Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84
[2024-11-03 13:00:00,356 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:00:00,356 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:00:00,356 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:00:00,356 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:00:00,367 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,367 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,370 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,379 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 13:00:00,379 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,379 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,386 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,392 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,394 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,395 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,399 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:00:00,400 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:00:00,400 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:00:00,401 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:00:00,402 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (1/1) ...
[2024-11-03 13:00:00,407 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:00:00,419 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:00:00,441 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 13:00:00,450 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 13:00:00,471 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:00:00,471 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:00:00,471 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 13:00:00,471 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 13:00:00,471 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:00:00,471 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:00:00,543 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:00:00,544 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:00:00,748 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 13:00:00,748 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:00:00,758 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:00:00,758 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 13:00:00,758 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:00:00 BoogieIcfgContainer
[2024-11-03 13:00:00,758 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:00:00,761 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:00:00,761 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:00:00,763 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:00:00,764 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:59:59" (1/3) ...
[2024-11-03 13:00:00,764 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6c4346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:00:00, skipping insertion in model container
[2024-11-03 13:00:00,764 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:00:00" (2/3) ...
[2024-11-03 13:00:00,764 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6c4346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:00:00, skipping insertion in model container
[2024-11-03 13:00:00,765 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:00:00" (3/3) ...
[2024-11-03 13:00:00,766 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-22.i
[2024-11-03 13:00:00,779 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:00:00,780 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:00:00,824 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:00:00,829 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;@6cf62698, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:00:00,829 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:00:00,833 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-03 13:00:00,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-03 13:00:00,841 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:00:00,841 INFO  L215           NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:00,842 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:00:00,847 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:00:00,847 INFO  L85        PathProgramCache]: Analyzing trace with hash -2131587255, now seen corresponding path program 1 times
[2024-11-03 13:00:00,853 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:00:00,853 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445270009]
[2024-11-03 13:00:00,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:00:00,855 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:00:00,855 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:00:00,858 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 13:00:00,859 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:00:00,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:00:00,943 INFO  L255         TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 13:00:00,948 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:00:00,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:00:00,981 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:00:01,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:00:01,024 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:00:01,024 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445270009]
[2024-11-03 13:00:01,025 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [445270009] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:00:01,025 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:00:01,025 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 13:00:01,027 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574831702]
[2024-11-03 13:00:01,028 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:00:01,032 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 13:00:01,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:00:01,049 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 13:00:01,050 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 13:00:01,051 INFO  L87              Difference]: Start difference. First operand  has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7)
[2024-11-03 13:00:01,092 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:00:01,093 INFO  L93              Difference]: Finished difference Result 71 states and 109 transitions.
[2024-11-03 13:00:01,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 13:00:01,095 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 55
[2024-11-03 13:00:01,095 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:00:01,102 INFO  L225             Difference]: With dead ends: 71
[2024-11-03 13:00:01,102 INFO  L226             Difference]: Without dead ends: 35
[2024-11-03 13:00:01,104 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 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 13:00:01,107 INFO  L432           NwaCegarLoop]: 46 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, 46 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 13:00:01,108 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:00:01,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2024-11-03 13:00:01,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2024-11-03 13:00:01,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-11-03 13:00:01,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions.
[2024-11-03 13:00:01,135 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 55
[2024-11-03 13:00:01,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:00:01,136 INFO  L471      AbstractCegarLoop]: Abstraction has 35 states and 46 transitions.
[2024-11-03 13:00:01,136 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7)
[2024-11-03 13:00:01,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions.
[2024-11-03 13:00:01,139 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2024-11-03 13:00:01,139 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:00:01,139 INFO  L215           NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:01,146 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 13:00:01,340 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:00:01,340 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:00:01,341 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:00:01,341 INFO  L85        PathProgramCache]: Analyzing trace with hash -1920406395, now seen corresponding path program 1 times
[2024-11-03 13:00:01,341 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:00:01,342 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159173014]
[2024-11-03 13:00:01,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:00:01,342 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:00:01,342 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:00:01,343 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 13:00:01,344 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:00:01,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:00:01,400 INFO  L255         TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 13:00:01,404 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:00:01,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:00:01,829 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:00:01,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:00:01,924 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:00:01,924 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159173014]
[2024-11-03 13:00:01,924 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1159173014] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:00:01,924 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:00:01,924 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6
[2024-11-03 13:00:01,925 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809132478]
[2024-11-03 13:00:01,925 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:00:01,927 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 13:00:01,928 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:00:01,930 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 13:00:01,930 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:00:01,930 INFO  L87              Difference]: Start difference. First operand 35 states and 46 transitions. Second operand  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2024-11-03 13:00:02,100 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:00:02,101 INFO  L93              Difference]: Finished difference Result 117 states and 155 transitions.
[2024-11-03 13:00:02,105 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-03 13:00:02,106 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 55
[2024-11-03 13:00:02,106 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:00:02,108 INFO  L225             Difference]: With dead ends: 117
[2024-11-03 13:00:02,108 INFO  L226             Difference]: Without dead ends: 85
[2024-11-03 13:00:02,109 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2024-11-03 13:00:02,113 INFO  L432           NwaCegarLoop]: 43 mSDtfsCounter, 55 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-03 13:00:02,113 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 203 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-03 13:00:02,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2024-11-03 13:00:02,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 54.
[2024-11-03 13:00:02,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 54 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-03 13:00:02,140 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions.
[2024-11-03 13:00:02,140 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 55
[2024-11-03 13:00:02,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:00:02,141 INFO  L471      AbstractCegarLoop]: Abstraction has 54 states and 71 transitions.
[2024-11-03 13:00:02,141 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2024-11-03 13:00:02,141 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions.
[2024-11-03 13:00:02,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-03 13:00:02,143 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:00:02,143 INFO  L215           NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:02,147 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 13:00:02,346 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:00:02,346 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:00:02,347 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:00:02,347 INFO  L85        PathProgramCache]: Analyzing trace with hash 1812581011, now seen corresponding path program 1 times
[2024-11-03 13:00:02,347 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:00:02,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188047247]
[2024-11-03 13:00:02,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:00:02,348 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:00:02,348 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:00:02,350 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 13:00:02,351 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:00:02,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:00:02,410 INFO  L255         TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-03 13:00:02,417 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:00:14,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:00:14,366 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:01:25,380 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:01:25,381 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:01:25,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188047247]
[2024-11-03 13:01:25,381 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [188047247] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:01:25,381 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:01:25,381 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 16
[2024-11-03 13:01:25,381 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29415884]
[2024-11-03 13:01:25,382 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:01:25,382 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-03 13:01:25,382 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:01:25,383 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-03 13:01:25,383 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240
[2024-11-03 13:01:25,384 INFO  L87              Difference]: Start difference. First operand 54 states and 71 transitions. Second operand  has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2024-11-03 13:01:30,635 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:01:30,635 INFO  L93              Difference]: Finished difference Result 156 states and 203 transitions.
[2024-11-03 13:01:30,635 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2024-11-03 13:01:30,636 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 56
[2024-11-03 13:01:30,636 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:01:30,637 INFO  L225             Difference]: With dead ends: 156
[2024-11-03 13:01:30,637 INFO  L226             Difference]: Without dead ends: 124
[2024-11-03 13:01:30,638 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870
[2024-11-03 13:01:30,639 INFO  L432           NwaCegarLoop]: 36 mSDtfsCounter, 128 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-03 13:01:30,640 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 298 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-03 13:01:30,640 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2024-11-03 13:01:30,650 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 65.
[2024-11-03 13:01:30,650 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 48 states have (on average 1.1875) internal successors, (57), 48 states have internal predecessors, (57), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-03 13:01:30,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions.
[2024-11-03 13:01:30,651 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 56
[2024-11-03 13:01:30,652 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:01:30,652 INFO  L471      AbstractCegarLoop]: Abstraction has 65 states and 85 transitions.
[2024-11-03 13:01:30,652 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)
[2024-11-03 13:01:30,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions.
[2024-11-03 13:01:30,653 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2024-11-03 13:01:30,653 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:01:30,654 INFO  L215           NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:30,657 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 13:01:30,855 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:01:30,856 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:01:30,857 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:01:30,857 INFO  L85        PathProgramCache]: Analyzing trace with hash 1419554001, now seen corresponding path program 1 times
[2024-11-03 13:01:30,857 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:01:30,857 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27510300]
[2024-11-03 13:01:30,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:01:30,857 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:01:30,857 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:01:30,862 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 13:01:30,863 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 13:01:30,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:01:30,896 INFO  L255         TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 13:01:30,898 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:01:30,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:01:30,907 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:01:30,937 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2024-11-03 13:01:30,937 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:01:30,938 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27510300]
[2024-11-03 13:01:30,938 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [27510300] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:01:30,938 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:01:30,938 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 13:01:30,938 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860722132]
[2024-11-03 13:01:30,938 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:01:30,939 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 13:01:30,939 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:01:30,939 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 13:01:30,939 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 13:01:30,940 INFO  L87              Difference]: Start difference. First operand 65 states and 85 transitions. Second operand  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7)
[2024-11-03 13:01:30,975 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:01:30,976 INFO  L93              Difference]: Finished difference Result 108 states and 141 transitions.
[2024-11-03 13:01:30,976 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 13:01:30,977 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56
[2024-11-03 13:01:30,977 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:01:30,978 INFO  L225             Difference]: With dead ends: 108
[2024-11-03 13:01:30,978 INFO  L226             Difference]: Without dead ends: 68
[2024-11-03 13:01:30,978 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 13:01:30,979 INFO  L432           NwaCegarLoop]: 53 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 13:01:30,980 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:01:30,981 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2024-11-03 13:01:30,988 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65.
[2024-11-03 13:01:30,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-03 13:01:30,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions.
[2024-11-03 13:01:30,990 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 56
[2024-11-03 13:01:30,990 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:01:30,990 INFO  L471      AbstractCegarLoop]: Abstraction has 65 states and 84 transitions.
[2024-11-03 13:01:30,990 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7)
[2024-11-03 13:01:30,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions.
[2024-11-03 13:01:30,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2024-11-03 13:01:30,991 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:01:30,991 INFO  L215           NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:30,994 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0
[2024-11-03 13:01:31,192 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:01:31,192 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:01:31,193 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:01:31,193 INFO  L85        PathProgramCache]: Analyzing trace with hash 461798945, now seen corresponding path program 1 times
[2024-11-03 13:01:31,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:01:31,193 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744870383]
[2024-11-03 13:01:31,193 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:01:31,193 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:01:31,193 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:01:31,194 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 13:01:31,195 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process
[2024-11-03 13:01:31,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:01:31,231 INFO  L255         TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-03 13:01:31,235 INFO  L278         TraceCheckSpWp]: Computing forward predicates...