/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-52.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 13:28:58,542 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 13:28:58,602 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 13:28:58,606 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 13:28:58,607 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 13:28:58,629 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 13:28:58,630 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 13:28:58,630 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 13:28:58,631 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 13:28:58,632 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 13:28:58,632 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 13:28:58,633 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 13:28:58,633 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 13:28:58,633 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 13:28:58,633 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 13:28:58,634 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 13:28:58,634 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 13:28:58,634 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 13:28:58,636 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 13:28:58,636 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 13:28:58,637 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 13:28:58,637 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 13:28:58,637 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 13:28:58,637 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 13:28:58,637 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 13:28:58,637 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 13:28:58,638 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 13:28:58,638 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 13:28:58,638 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 13:28:58,638 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 13:28:58,638 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 13:28:58,638 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 13:28:58,639 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 13:28:58,639 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 13:28:58,639 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:28:58,639 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 13:28:58,639 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 13:28:58,639 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 13:28:58,639 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 13:28:58,640 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 13:28:58,640 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 13:28:58,641 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 13:28:58,641 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 13:28:58,641 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 13:28:58,642 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 13:28:58,835 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 13:28:58,857 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 13:28:58,859 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 13:28:58,860 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 13:28:58,860 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 13:28:58,862 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-52.i
[2024-11-03 13:29:00,218 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 13:29:00,371 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 13:29:00,372 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-52.i
[2024-11-03 13:29:00,380 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22eeca927/656cb7c12bf6476a9a5cf6c3156b5121/FLAGe13b489b6
[2024-11-03 13:29:00,391 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22eeca927/656cb7c12bf6476a9a5cf6c3156b5121
[2024-11-03 13:29:00,393 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 13:29:00,394 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 13:29:00,397 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 13:29:00,397 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 13:29:00,407 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 13:29:00,408 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,408 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb79993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00, skipping insertion in model container
[2024-11-03 13:29:00,409 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,433 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:29:00,581 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-52.i[915,928]
[2024-11-03 13:29:00,617 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:29:00,630 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:29:00,638 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-52.i[915,928]
[2024-11-03 13:29:00,654 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:29:00,668 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:29:00,669 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00 WrapperNode
[2024-11-03 13:29:00,669 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:29:00,670 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:29:00,670 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:29:00,670 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:29:00,674 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,682 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,701 INFO  L138                Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118
[2024-11-03 13:29:00,701 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:29:00,702 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:29:00,702 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:29:00,702 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:29:00,714 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,715 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,717 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,730 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 13:29:00,730 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,730 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,735 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,737 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,739 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,740 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,742 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:29:00,742 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:29:00,742 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:29:00,742 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:29:00,743 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (1/1) ...
[2024-11-03 13:29:00,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:29:00,755 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:29:00,765 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 13:29:00,768 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 13:29:00,789 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:29:00,789 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:29:00,789 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 13:29:00,789 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 13:29:00,789 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:29:00,789 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:29:00,846 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:29:00,848 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:29:01,069 INFO  L?                        ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-03 13:29:01,069 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:29:01,078 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:29:01,079 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 13:29:01,079 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:29:01 BoogieIcfgContainer
[2024-11-03 13:29:01,079 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:29:01,081 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:29:01,081 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:29:01,083 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:29:01,083 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:29:00" (1/3) ...
[2024-11-03 13:29:01,084 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac646ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:29:01, skipping insertion in model container
[2024-11-03 13:29:01,084 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:00" (2/3) ...
[2024-11-03 13:29:01,084 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac646ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:29:01, skipping insertion in model container
[2024-11-03 13:29:01,084 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:29:01" (3/3) ...
[2024-11-03 13:29:01,085 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-52.i
[2024-11-03 13:29:01,097 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:29:01,097 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:29:01,138 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:29:01,142 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;@539b87a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:29:01,142 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:29:01,145 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 52 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-03 13:29:01,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2024-11-03 13:29:01,152 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:29:01,152 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:01,153 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:29:01,156 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:29:01,156 INFO  L85        PathProgramCache]: Analyzing trace with hash 384959832, now seen corresponding path program 1 times
[2024-11-03 13:29:01,162 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:29:01,163 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421250246]
[2024-11-03 13:29:01,163 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:29:01,164 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:29:01,164 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:01,166 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 13:29:01,168 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:29:01,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:29:01,253 INFO  L255         TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 13:29:01,258 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:29:01,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2024-11-03 13:29:01,287 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:29:01,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked.
[2024-11-03 13:29:01,359 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:29:01,359 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421250246]
[2024-11-03 13:29:01,360 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [421250246] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:29:01,360 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:29:01,360 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 13:29:01,365 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024148554]
[2024-11-03 13:29:01,366 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:29:01,369 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 13:29:01,369 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:29:01,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 13:29:01,384 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 13:29:01,386 INFO  L87              Difference]: Start difference. First operand  has 52 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12)
[2024-11-03 13:29:01,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:29:01,401 INFO  L93              Difference]: Finished difference Result 97 states and 158 transitions.
[2024-11-03 13:29:01,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 13:29:01,403 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 86
[2024-11-03 13:29:01,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:29:01,408 INFO  L225             Difference]: With dead ends: 97
[2024-11-03 13:29:01,408 INFO  L226             Difference]: Without dead ends: 48
[2024-11-03 13:29:01,410 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 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 13:29:01,412 INFO  L432           NwaCegarLoop]: 69 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, 69 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 13:29:01,412 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:29:01,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2024-11-03 13:29:01,435 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2024-11-03 13:29:01,436 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-03 13:29:01,437 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 69 transitions.
[2024-11-03 13:29:01,438 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 69 transitions. Word has length 86
[2024-11-03 13:29:01,438 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:29:01,438 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 69 transitions.
[2024-11-03 13:29:01,438 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12)
[2024-11-03 13:29:01,438 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 69 transitions.
[2024-11-03 13:29:01,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2024-11-03 13:29:01,441 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:29:01,441 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:01,446 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0
[2024-11-03 13:29:01,641 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:01,642 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:29:01,643 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:29:01,643 INFO  L85        PathProgramCache]: Analyzing trace with hash 260844888, now seen corresponding path program 1 times
[2024-11-03 13:29:01,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:29:01,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904550244]
[2024-11-03 13:29:01,643 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:29:01,644 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:29:01,644 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:01,649 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 13:29:01,650 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:29:01,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:29:01,746 INFO  L255         TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 13:29:01,754 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:29:01,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-03 13:29:01,820 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:29:01,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-03 13:29:01,946 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:29:01,946 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904550244]
[2024-11-03 13:29:01,946 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [904550244] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:29:01,946 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:29:01,946 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-11-03 13:29:01,946 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586105899]
[2024-11-03 13:29:01,947 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:29:01,949 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-03 13:29:01,949 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:29:01,950 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-03 13:29:01,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 13:29:01,951 INFO  L87              Difference]: Start difference. First operand 48 states and 69 transitions. Second operand  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2024-11-03 13:29:02,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:29:02,047 INFO  L93              Difference]: Finished difference Result 92 states and 133 transitions.
[2024-11-03 13:29:02,051 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 13:29:02,051 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 86
[2024-11-03 13:29:02,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:29:02,053 INFO  L225             Difference]: With dead ends: 92
[2024-11-03 13:29:02,053 INFO  L226             Difference]: Without dead ends: 47
[2024-11-03 13:29:02,054 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-03 13:29:02,054 INFO  L432           NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-03 13:29:02,055 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-03 13:29:02,055 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2024-11-03 13:29:02,060 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2024-11-03 13:29:02,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-03 13:29:02,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions.
[2024-11-03 13:29:02,061 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 86
[2024-11-03 13:29:02,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:29:02,063 INFO  L471      AbstractCegarLoop]: Abstraction has 47 states and 66 transitions.
[2024-11-03 13:29:02,063 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12)
[2024-11-03 13:29:02,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions.
[2024-11-03 13:29:02,065 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2024-11-03 13:29:02,065 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:29:02,065 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:02,077 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 13:29:02,265 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:02,267 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:29:02,267 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:29:02,268 INFO  L85        PathProgramCache]: Analyzing trace with hash 1833572630, now seen corresponding path program 1 times
[2024-11-03 13:29:02,268 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:29:02,268 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350724524]
[2024-11-03 13:29:02,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:29:02,268 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:29:02,269 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:02,270 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 13:29:02,271 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:29:02,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:29:02,324 INFO  L255         TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-03 13:29:02,328 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:29:02,534 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-03 13:29:02,534 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:29:02,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2024-11-03 13:29:02,618 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:29:02,618 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350724524]
[2024-11-03 13:29:02,618 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [350724524] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:29:02,618 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:29:02,618 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8
[2024-11-03 13:29:02,618 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873012510]
[2024-11-03 13:29:02,618 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:29:02,619 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 13:29:02,619 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:29:02,620 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 13:29:02,620 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-11-03 13:29:02,622 INFO  L87              Difference]: Start difference. First operand 47 states and 66 transitions. Second operand  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-03 13:29:03,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:29:03,291 INFO  L93              Difference]: Finished difference Result 176 states and 252 transitions.
[2024-11-03 13:29:03,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-03 13:29:03,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 86
[2024-11-03 13:29:03,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:29:03,296 INFO  L225             Difference]: With dead ends: 176
[2024-11-03 13:29:03,296 INFO  L226             Difference]: Without dead ends: 132
[2024-11-03 13:29:03,297 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210
[2024-11-03 13:29:03,298 INFO  L432           NwaCegarLoop]: 71 mSDtfsCounter, 231 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-03 13:29:03,300 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 275 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-03 13:29:03,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2024-11-03 13:29:03,320 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 47.
[2024-11-03 13:29:03,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2024-11-03 13:29:03,322 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions.
[2024-11-03 13:29:03,322 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 86
[2024-11-03 13:29:03,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:29:03,323 INFO  L471      AbstractCegarLoop]: Abstraction has 47 states and 65 transitions.
[2024-11-03 13:29:03,323 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2024-11-03 13:29:03,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions.
[2024-11-03 13:29:03,324 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2024-11-03 13:29:03,324 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:29:03,324 INFO  L215           NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:03,332 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 13:29:03,524 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:03,525 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:29:03,526 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:29:03,526 INFO  L85        PathProgramCache]: Analyzing trace with hash 1575407192, now seen corresponding path program 1 times
[2024-11-03 13:29:03,526 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:29:03,527 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907346534]
[2024-11-03 13:29:03,527 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:29:03,527 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:29:03,527 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:29:03,529 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 13:29:03,530 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 13:29:03,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:29:03,576 INFO  L255         TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 36 conjuncts are in the unsatisfiable core
[2024-11-03 13:29:03,582 INFO  L278         TraceCheckSpWp]: Computing forward predicates...