/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_amount50_file-68.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 13:30:58,222 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 13:30:58,297 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 13:30:58,303 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 13:30:58,304 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 13:30:58,336 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 13:30:58,337 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 13:30:58,337 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 13:30:58,338 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 13:30:58,338 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 13:30:58,339 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 13:30:58,339 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 13:30:58,340 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 13:30:58,341 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 13:30:58,341 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 13:30:58,342 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 13:30:58,342 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 13:30:58,342 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 13:30:58,342 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 13:30:58,343 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 13:30:58,343 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 13:30:58,347 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 13:30:58,347 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 13:30:58,348 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 13:30:58,348 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 13:30:58,348 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 13:30:58,348 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 13:30:58,348 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 13:30:58,349 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 13:30:58,349 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 13:30:58,349 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 13:30:58,349 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 13:30:58,349 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 13:30:58,350 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 13:30:58,350 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:30:58,350 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 13:30:58,350 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 13:30:58,350 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 13:30:58,351 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 13:30:58,351 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 13:30:58,351 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 13:30:58,351 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 13:30:58,351 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 13:30:58,352 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 13:30:58,352 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 13:30:58,567 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 13:30:58,592 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 13:30:58,599 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 13:30:58,600 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 13:30:58,602 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 13:30:58,604 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-68.i
[2024-11-03 13:31:00,073 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 13:31:00,257 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 13:31:00,258 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-68.i
[2024-11-03 13:31:00,266 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708164d07/8206b9ad770e4ea981a18581449d9897/FLAGf448fbbe2
[2024-11-03 13:31:00,284 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/708164d07/8206b9ad770e4ea981a18581449d9897
[2024-11-03 13:31:00,286 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 13:31:00,288 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 13:31:00,289 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 13:31:00,289 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 13:31:00,296 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 13:31:00,297 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,298 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756e47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00, skipping insertion in model container
[2024-11-03 13:31:00,298 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,330 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:31:00,494 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-68.i[915,928]
[2024-11-03 13:31:00,537 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:31:00,550 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:31:00,561 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-68.i[915,928]
[2024-11-03 13:31:00,580 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:31:00,602 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:31:00,602 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00 WrapperNode
[2024-11-03 13:31:00,602 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:31:00,603 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:31:00,604 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:31:00,604 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:31:00,612 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,622 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,647 INFO  L138                Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 111
[2024-11-03 13:31:00,648 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:31:00,649 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:31:00,649 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:31:00,649 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:31:00,659 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,660 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,663 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,678 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 13:31:00,679 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,679 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,686 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,690 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,692 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,693 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,696 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:31:00,697 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:31:00,697 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:31:00,697 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:31:00,698 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (1/1) ...
[2024-11-03 13:31:00,707 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:31:00,718 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:31:00,735 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 13:31:00,739 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 13:31:00,766 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:31:00,766 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:31:00,766 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 13:31:00,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 13:31:00,767 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:31:00,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:31:00,860 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:31:00,862 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:31:01,443 INFO  L?                        ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-03 13:31:01,443 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:31:01,456 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:31:01,457 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 13:31:01,458 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:31:01 BoogieIcfgContainer
[2024-11-03 13:31:01,458 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:31:01,461 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:31:01,461 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:31:01,466 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:31:01,466 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:31:00" (1/3) ...
[2024-11-03 13:31:01,467 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4d596f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:31:01, skipping insertion in model container
[2024-11-03 13:31:01,467 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:31:00" (2/3) ...
[2024-11-03 13:31:01,468 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4d596f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:31:01, skipping insertion in model container
[2024-11-03 13:31:01,468 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:31:01" (3/3) ...
[2024-11-03 13:31:01,470 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-68.i
[2024-11-03 13:31:01,485 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:31:01,486 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:31:01,547 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:31:01,553 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;@fbd5e89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:31:01,553 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:31:01,557 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 49 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 13:31:01,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 13:31:01,564 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:31:01,565 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:01,565 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:31:01,569 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:31:01,569 INFO  L85        PathProgramCache]: Analyzing trace with hash 518846006, now seen corresponding path program 1 times
[2024-11-03 13:31:01,575 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:31:01,576 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960160476]
[2024-11-03 13:31:01,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:31:01,577 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:31:01,577 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:01,579 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 13:31:01,580 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:31:01,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:31:01,696 INFO  L255         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 13:31:01,706 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:31:01,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-03 13:31:01,735 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:31:01,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-03 13:31:01,820 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:31:01,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960160476]
[2024-11-03 13:31:01,821 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [960160476] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:31:01,825 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:31:01,825 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 13:31:01,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063617324]
[2024-11-03 13:31:01,827 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:31:01,833 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 13:31:01,833 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:31:01,856 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 13:31:01,856 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 13:31:01,858 INFO  L87              Difference]: Start difference. First operand  has 49 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 13:31:01,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:31:01,876 INFO  L93              Difference]: Finished difference Result 91 states and 146 transitions.
[2024-11-03 13:31:01,877 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 13:31:01,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75
[2024-11-03 13:31:01,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:31:01,883 INFO  L225             Difference]: With dead ends: 91
[2024-11-03 13:31:01,884 INFO  L226             Difference]: Without dead ends: 45
[2024-11-03 13:31:01,886 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 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 13:31:01,889 INFO  L432           NwaCegarLoop]: 64 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, 64 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 13:31:01,889 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:31:01,901 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2024-11-03 13:31:01,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2024-11-03 13:31:01,915 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 13:31:01,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions.
[2024-11-03 13:31:01,917 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 75
[2024-11-03 13:31:01,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:31:01,918 INFO  L471      AbstractCegarLoop]: Abstraction has 45 states and 64 transitions.
[2024-11-03 13:31:01,918 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10)
[2024-11-03 13:31:01,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions.
[2024-11-03 13:31:01,921 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2024-11-03 13:31:01,921 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:31:01,921 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:01,923 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 13:31:02,122 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:02,122 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:31:02,123 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:31:02,123 INFO  L85        PathProgramCache]: Analyzing trace with hash -283092814, now seen corresponding path program 1 times
[2024-11-03 13:31:02,123 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:31:02,124 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410310444]
[2024-11-03 13:31:02,124 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:31:02,124 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:31:02,124 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:02,125 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 13:31:02,126 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:31:02,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:31:02,235 INFO  L255         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 13:31:02,242 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:31:02,484 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 13:31:02,484 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:31:02,585 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 13:31:02,586 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:31:02,586 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410310444]
[2024-11-03 13:31:02,586 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1410310444] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:31:02,586 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:31:02,586 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8
[2024-11-03 13:31:02,587 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243583698]
[2024-11-03 13:31:02,587 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:31:02,589 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 13:31:02,590 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:31:02,591 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 13:31:02,591 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-03 13:31:02,592 INFO  L87              Difference]: Start difference. First operand 45 states and 64 transitions. Second operand  has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-03 13:31:03,207 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:31:03,207 INFO  L93              Difference]: Finished difference Result 154 states and 223 transitions.
[2024-11-03 13:31:03,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 13:31:03,215 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 75
[2024-11-03 13:31:03,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:31:03,218 INFO  L225             Difference]: With dead ends: 154
[2024-11-03 13:31:03,219 INFO  L226             Difference]: Without dead ends: 112
[2024-11-03 13:31:03,219 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2024-11-03 13:31:03,220 INFO  L432           NwaCegarLoop]: 88 mSDtfsCounter, 209 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-03 13:31:03,221 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 383 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-03 13:31:03,222 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2024-11-03 13:31:03,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 45.
[2024-11-03 13:31:03,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 45 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-03 13:31:03,245 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 63 transitions.
[2024-11-03 13:31:03,246 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 63 transitions. Word has length 75
[2024-11-03 13:31:03,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:31:03,247 INFO  L471      AbstractCegarLoop]: Abstraction has 45 states and 63 transitions.
[2024-11-03 13:31:03,248 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-03 13:31:03,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 63 transitions.
[2024-11-03 13:31:03,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2024-11-03 13:31:03,252 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:31:03,252 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:03,255 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0
[2024-11-03 13:31:03,452 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:03,453 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:31:03,454 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:31:03,454 INFO  L85        PathProgramCache]: Analyzing trace with hash -1537183120, now seen corresponding path program 1 times
[2024-11-03 13:31:03,454 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:31:03,454 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111955537]
[2024-11-03 13:31:03,455 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:31:03,455 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:31:03,455 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:03,456 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 13:31:03,458 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:31:03,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:31:03,539 INFO  L255         TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-03 13:31:03,543 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:31:03,859 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 13:31:03,859 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:31:04,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-03 13:31:04,040 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:31:04,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111955537]
[2024-11-03 13:31:04,040 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [111955537] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:31:04,040 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:31:04,040 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12
[2024-11-03 13:31:04,041 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640975723]
[2024-11-03 13:31:04,041 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:31:04,041 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-03 13:31:04,042 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:31:04,045 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-03 13:31:04,046 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2024-11-03 13:31:04,046 INFO  L87              Difference]: Start difference. First operand 45 states and 63 transitions. Second operand  has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-03 13:31:05,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:31:05,712 INFO  L93              Difference]: Finished difference Result 254 states and 355 transitions.
[2024-11-03 13:31:05,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-03 13:31:05,714 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 76
[2024-11-03 13:31:05,714 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:31:05,716 INFO  L225             Difference]: With dead ends: 254
[2024-11-03 13:31:05,716 INFO  L226             Difference]: Without dead ends: 212
[2024-11-03 13:31:05,717 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420
[2024-11-03 13:31:05,718 INFO  L432           NwaCegarLoop]: 91 mSDtfsCounter, 301 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2024-11-03 13:31:05,719 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 435 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2024-11-03 13:31:05,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2024-11-03 13:31:05,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 107.
[2024-11-03 13:31:05,770 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107 states, 75 states have (on average 1.2933333333333332) internal successors, (97), 76 states have internal predecessors, (97), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28)
[2024-11-03 13:31:05,773 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 153 transitions.
[2024-11-03 13:31:05,775 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 153 transitions. Word has length 76
[2024-11-03 13:31:05,775 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:31:05,775 INFO  L471      AbstractCegarLoop]: Abstraction has 107 states and 153 transitions.
[2024-11-03 13:31:05,776 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2024-11-03 13:31:05,776 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 153 transitions.
[2024-11-03 13:31:05,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2024-11-03 13:31:05,777 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:31:05,777 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:05,782 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 13:31:05,978 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:05,978 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:31:05,979 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:31:05,979 INFO  L85        PathProgramCache]: Analyzing trace with hash -1279017682, now seen corresponding path program 1 times
[2024-11-03 13:31:05,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:31:05,980 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072882411]
[2024-11-03 13:31:05,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:31:05,980 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:31:05,980 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:31:05,982 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 13:31:05,984 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 13:31:06,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:31:06,054 INFO  L255         TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-11-03 13:31:06,059 INFO  L278         TraceCheckSpWp]: Computing forward predicates...