/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-42.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 13:03:14,257 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 13:03:14,329 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 13:03:14,333 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 13:03:14,333 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 13:03:14,350 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 13:03:14,351 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 13:03:14,351 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 13:03:14,352 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 13:03:14,352 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 13:03:14,352 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 13:03:14,353 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 13:03:14,353 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 13:03:14,353 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 13:03:14,354 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 13:03:14,354 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 13:03:14,354 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 13:03:14,355 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 13:03:14,355 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 13:03:14,355 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 13:03:14,356 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 13:03:14,356 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 13:03:14,356 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 13:03:14,357 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 13:03:14,357 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 13:03:14,357 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 13:03:14,358 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 13:03:14,358 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 13:03:14,358 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 13:03:14,358 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 13:03:14,359 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 13:03:14,359 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 13:03:14,359 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 13:03:14,360 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 13:03:14,360 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:03:14,360 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 13:03:14,360 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 13:03:14,361 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 13:03:14,361 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 13:03:14,361 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 13:03:14,361 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 13:03:14,362 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 13:03:14,362 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 13:03:14,362 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 13:03:14,362 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 13:03:14,574 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 13:03:14,595 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 13:03:14,598 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 13:03:14,599 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 13:03:14,600 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 13:03:14,601 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i
[2024-11-03 13:03:15,978 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 13:03:16,142 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 13:03:16,143 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-42.i
[2024-11-03 13:03:16,149 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e278dbeab/cfb3ae68bf3f485795a294c89848e6ab/FLAG47c6ad6b5
[2024-11-03 13:03:16,546 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e278dbeab/cfb3ae68bf3f485795a294c89848e6ab
[2024-11-03 13:03:16,549 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 13:03:16,550 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 13:03:16,553 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 13:03:16,553 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 13:03:16,558 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 13:03:16,558 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,559 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bafa9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16, skipping insertion in model container
[2024-11-03 13:03:16,559 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,584 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:03:16,729 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-42.i[915,928]
[2024-11-03 13:03:16,776 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:03:16,796 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:03:16,808 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-42.i[915,928]
[2024-11-03 13:03:16,828 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:03:16,849 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:03:16,849 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16 WrapperNode
[2024-11-03 13:03:16,850 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:03:16,850 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:03:16,851 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:03:16,851 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:03:16,856 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,865 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,885 INFO  L138                Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102
[2024-11-03 13:03:16,886 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:03:16,887 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:03:16,887 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:03:16,887 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:03:16,896 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,896 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,904 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,914 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 13:03:16,914 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,914 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,921 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,924 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,926 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,927 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,929 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:03:16,930 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:03:16,930 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:03:16,930 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:03:16,931 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (1/1) ...
[2024-11-03 13:03:16,936 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:03:16,946 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:03:16,960 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 13:03:16,963 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 13:03:16,989 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:03:16,989 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:03:16,990 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 13:03:16,990 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 13:03:16,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:03:16,991 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:03:17,074 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:03:17,076 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:03:17,353 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 13:03:17,353 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:03:17,370 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:03:17,371 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 13:03:17,371 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:03:17 BoogieIcfgContainer
[2024-11-03 13:03:17,371 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:03:17,373 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:03:17,374 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:03:17,376 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:03:17,376 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:03:16" (1/3) ...
[2024-11-03 13:03:17,376 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc77ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:03:17, skipping insertion in model container
[2024-11-03 13:03:17,377 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:03:16" (2/3) ...
[2024-11-03 13:03:17,377 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc77ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:03:17, skipping insertion in model container
[2024-11-03 13:03:17,377 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:03:17" (3/3) ...
[2024-11-03 13:03:17,378 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-42.i
[2024-11-03 13:03:17,393 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:03:17,393 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:03:17,448 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:03:17,456 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;@1dba8a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:03:17,457 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:03:17,461 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 48 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-03 13:03:17,470 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-03 13:03:17,471 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:03:17,471 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:17,472 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:03:17,476 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:03:17,477 INFO  L85        PathProgramCache]: Analyzing trace with hash 350031807, now seen corresponding path program 1 times
[2024-11-03 13:03:17,483 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:03:17,483 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463568851]
[2024-11-03 13:03:17,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:03:17,485 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:03:17,485 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:03:17,487 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 13:03:17,488 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:03:17,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:03:17,611 INFO  L255         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 13:03:17,622 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:03:17,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2024-11-03 13:03:17,671 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:03:17,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked.
[2024-11-03 13:03:17,764 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:03:17,764 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463568851]
[2024-11-03 13:03:17,765 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [463568851] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:03:17,765 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:03:17,765 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 13:03:17,766 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810001446]
[2024-11-03 13:03:17,767 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:03:17,770 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 13:03:17,770 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:03:17,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 13:03:17,788 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 13:03:17,790 INFO  L87              Difference]: Start difference. First operand  has 48 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-03 13:03:17,814 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:03:17,814 INFO  L93              Difference]: Finished difference Result 89 states and 147 transitions.
[2024-11-03 13:03:17,815 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 13:03:17,816 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 97
[2024-11-03 13:03:17,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:03:17,823 INFO  L225             Difference]: With dead ends: 89
[2024-11-03 13:03:17,823 INFO  L226             Difference]: Without dead ends: 44
[2024-11-03 13:03:17,828 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 13:03:17,831 INFO  L432           NwaCegarLoop]: 62 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, 62 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 13:03:17,831 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:03:17,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2024-11-03 13:03:17,860 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2024-11-03 13:03:17,862 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-03 13:03:17,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions.
[2024-11-03 13:03:17,866 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 97
[2024-11-03 13:03:17,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:03:17,867 INFO  L471      AbstractCegarLoop]: Abstraction has 44 states and 62 transitions.
[2024-11-03 13:03:17,867 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-03 13:03:17,869 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions.
[2024-11-03 13:03:17,873 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-03 13:03:17,873 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:03:17,873 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:17,875 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 13:03:18,074 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:03:18,075 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:03:18,076 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:03:18,076 INFO  L85        PathProgramCache]: Analyzing trace with hash 1682017665, now seen corresponding path program 1 times
[2024-11-03 13:03:18,076 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:03:18,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668989990]
[2024-11-03 13:03:18,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:03:18,077 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:03:18,077 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:03:18,078 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 13:03:18,079 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:03:18,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:03:18,169 INFO  L255         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 13:03:18,177 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:03:18,272 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-03 13:03:18,273 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:03:18,380 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-03 13:03:18,380 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:03:18,381 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668989990]
[2024-11-03 13:03:18,381 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1668989990] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:03:18,381 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:03:18,381 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 5
[2024-11-03 13:03:18,381 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429721150]
[2024-11-03 13:03:18,382 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:03:18,384 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-03 13:03:18,384 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:03:18,385 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-03 13:03:18,385 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-11-03 13:03:18,385 INFO  L87              Difference]: Start difference. First operand 44 states and 62 transitions. Second operand  has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-03 13:03:18,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:03:18,677 INFO  L93              Difference]: Finished difference Result 158 states and 227 transitions.
[2024-11-03 13:03:18,677 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-03 13:03:18,678 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 97
[2024-11-03 13:03:18,679 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:03:18,681 INFO  L225             Difference]: With dead ends: 158
[2024-11-03 13:03:18,681 INFO  L226             Difference]: Without dead ends: 117
[2024-11-03 13:03:18,682 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:03:18,683 INFO  L432           NwaCegarLoop]: 100 mSDtfsCounter, 126 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 13:03:18,683 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 277 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 13:03:18,684 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2024-11-03 13:03:18,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 44.
[2024-11-03 13:03:18,702 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15)
[2024-11-03 13:03:18,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions.
[2024-11-03 13:03:18,704 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 97
[2024-11-03 13:03:18,705 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:03:18,705 INFO  L471      AbstractCegarLoop]: Abstraction has 44 states and 61 transitions.
[2024-11-03 13:03:18,705 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15)
[2024-11-03 13:03:18,706 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions.
[2024-11-03 13:03:18,709 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2024-11-03 13:03:18,709 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:03:18,709 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:18,712 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 13:03:18,911 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:03:18,912 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:03:18,913 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:03:18,913 INFO  L85        PathProgramCache]: Analyzing trace with hash -837942269, now seen corresponding path program 1 times
[2024-11-03 13:03:18,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:03:18,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674082172]
[2024-11-03 13:03:18,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:03:18,914 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:03:18,914 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:03:18,916 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 13:03:18,917 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:03:18,979 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:03:18,984 INFO  L255         TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-03 13:03:18,990 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:03:41,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-03 13:03:41,135 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:04:12,536 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked.
[2024-11-03 13:04:12,536 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:04:12,537 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674082172]
[2024-11-03 13:04:12,537 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [674082172] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:04:12,537 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:04:12,537 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 18
[2024-11-03 13:04:12,537 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536220014]
[2024-11-03 13:04:12,537 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:04:12,538 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-11-03 13:04:12,538 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:04:12,539 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-11-03 13:04:12,539 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2024-11-03 13:04:12,539 INFO  L87              Difference]: Start difference. First operand 44 states and 61 transitions. Second operand  has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)
[2024-11-03 13:04:13,221 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:04:13,221 INFO  L93              Difference]: Finished difference Result 139 states and 192 transitions.
[2024-11-03 13:04:13,224 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2024-11-03 13:04:13,225 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 97
[2024-11-03 13:04:13,225 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:04:13,227 INFO  L225             Difference]: With dead ends: 139
[2024-11-03 13:04:13,227 INFO  L226             Difference]: Without dead ends: 98
[2024-11-03 13:04:13,228 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600
[2024-11-03 13:04:13,229 INFO  L432           NwaCegarLoop]: 49 mSDtfsCounter, 68 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-03 13:04:13,229 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 348 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-03 13:04:13,230 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2024-11-03 13:04:13,244 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 77.
[2024-11-03 13:04:13,245 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2024-11-03 13:04:13,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions.
[2024-11-03 13:04:13,246 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 97
[2024-11-03 13:04:13,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:04:13,247 INFO  L471      AbstractCegarLoop]: Abstraction has 77 states and 108 transitions.
[2024-11-03 13:04:13,247 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)
[2024-11-03 13:04:13,247 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions.
[2024-11-03 13:04:13,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2024-11-03 13:04:13,250 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:04:13,250 INFO  L215           NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:13,256 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 13:04:13,454 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:04:13,454 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:04:13,455 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:04:13,455 INFO  L85        PathProgramCache]: Analyzing trace with hash -441966872, now seen corresponding path program 1 times
[2024-11-03 13:04:13,455 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:04:13,456 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344252413]
[2024-11-03 13:04:13,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:04:13,456 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:04:13,456 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:04:13,458 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 13:04:13,460 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 13:04:13,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:04:13,513 INFO  L255         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-03 13:04:13,517 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:04:22,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 299 proven. 27 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2024-11-03 13:04:22,888 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:04:42,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 420 backedges. 99 proven. 18 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked.
[2024-11-03 13:04:42,824 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:04:42,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344252413]
[2024-11-03 13:04:42,825 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [344252413] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 13:04:42,825 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 13:04:42,825 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19] total 44
[2024-11-03 13:04:42,825 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201620910]
[2024-11-03 13:04:42,826 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 13:04:42,826 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2024-11-03 13:04:42,826 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:04:42,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2024-11-03 13:04:42,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1520, Unknown=0, NotChecked=0, Total=1892
[2024-11-03 13:04:42,829 INFO  L87              Difference]: Start difference. First operand 77 states and 108 transitions. Second operand  has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 43 states have internal predecessors, (84), 8 states have call successors, (30), 6 states have call predecessors, (30), 13 states have return successors, (30), 10 states have call predecessors, (30), 8 states have call successors, (30)
[2024-11-03 13:04:47,013 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:04:47,013 INFO  L93              Difference]: Finished difference Result 144 states and 171 transitions.
[2024-11-03 13:04:47,014 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. 
[2024-11-03 13:04:47,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 43 states have internal predecessors, (84), 8 states have call successors, (30), 6 states have call predecessors, (30), 13 states have return successors, (30), 10 states have call predecessors, (30), 8 states have call successors, (30) Word has length 98
[2024-11-03 13:04:47,014 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:04:47,016 INFO  L225             Difference]: With dead ends: 144
[2024-11-03 13:04:47,016 INFO  L226             Difference]: Without dead ends: 142
[2024-11-03 13:04:47,019 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1689, Invalid=6501, Unknown=0, NotChecked=0, Total=8190
[2024-11-03 13:04:47,020 INFO  L432           NwaCegarLoop]: 40 mSDtfsCounter, 241 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2024-11-03 13:04:47,020 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 338 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2024-11-03 13:04:47,021 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2024-11-03 13:04:47,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110.
[2024-11-03 13:04:47,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 70 states have internal predecessors, (76), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2024-11-03 13:04:47,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions.
[2024-11-03 13:04:47,041 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 98
[2024-11-03 13:04:47,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:04:47,041 INFO  L471      AbstractCegarLoop]: Abstraction has 110 states and 136 transitions.
[2024-11-03 13:04:47,042 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 44 states, 44 states have (on average 1.9090909090909092) internal successors, (84), 43 states have internal predecessors, (84), 8 states have call successors, (30), 6 states have call predecessors, (30), 13 states have return successors, (30), 10 states have call predecessors, (30), 8 states have call successors, (30)
[2024-11-03 13:04:47,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions.
[2024-11-03 13:04:47,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 193
[2024-11-03 13:04:47,044 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:04:47,044 INFO  L215           NwaCegarLoop]: trace histogram [30, 30, 30, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 13:04:47,051 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0
[2024-11-03 13:04:47,246 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:04:47,247 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:04:47,247 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:04:47,247 INFO  L85        PathProgramCache]: Analyzing trace with hash 537531783, now seen corresponding path program 1 times
[2024-11-03 13:04:47,247 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:04:47,247 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463247436]
[2024-11-03 13:04:47,247 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:04:47,248 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:04:47,248 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:04:47,249 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 13:04:47,250 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process
[2024-11-03 13:04:47,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:04:47,313 INFO  L255         TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 26 conjuncts are in the unsatisfiable core
[2024-11-03 13:04:47,318 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:04:51,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 1773 backedges. 517 proven. 11 refuted. 0 times theorem prover too weak. 1245 trivial. 0 not checked.
[2024-11-03 13:04:51,355 INFO  L311         TraceCheckSpWp]: Computing backward predicates...