/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-34.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 13:26:36,992 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 13:26:37,044 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 13:26:37,047 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 13:26:37,047 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 13:26:37,067 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 13:26:37,067 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 13:26:37,067 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 13:26:37,068 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 13:26:37,069 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 13:26:37,069 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 13:26:37,069 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 13:26:37,069 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 13:26:37,070 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 13:26:37,070 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 13:26:37,071 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 13:26:37,072 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 13:26:37,072 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 13:26:37,072 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 13:26:37,072 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 13:26:37,072 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 13:26:37,075 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 13:26:37,076 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 13:26:37,077 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 13:26:37,077 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 13:26:37,077 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 13:26:37,077 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 13:26:37,077 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 13:26:37,077 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:26:37,078 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 13:26:37,078 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 13:26:37,078 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 13:26:37,078 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 13:26:37,078 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 13:26:37,078 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 13:26:37,079 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 13:26:37,079 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 13:26:37,079 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 13:26:37,079 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla
[2024-11-03 13:26:37,275 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 13:26:37,298 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 13:26:37,303 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 13:26:37,304 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 13:26:37,305 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 13:26:37,306 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i
[2024-11-03 13:26:38,628 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 13:26:38,817 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 13:26:38,817 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-34.i
[2024-11-03 13:26:38,830 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652c38986/637004855e2348ac98f34b08fc409906/FLAGef9081ae9
[2024-11-03 13:26:38,844 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652c38986/637004855e2348ac98f34b08fc409906
[2024-11-03 13:26:38,847 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 13:26:38,849 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 13:26:38,850 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 13:26:38,850 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 13:26:38,855 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 13:26:38,856 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:26:38" (1/1) ...
[2024-11-03 13:26:38,856 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc52b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:38, skipping insertion in model container
[2024-11-03 13:26:38,856 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:26:38" (1/1) ...
[2024-11-03 13:26:38,883 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 13:26:39,020 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-34.i[915,928]
[2024-11-03 13:26:39,056 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:26:39,066 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 13:26:39,074 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-34.i[915,928]
[2024-11-03 13:26:39,102 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 13:26:39,121 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 13:26:39,121 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39 WrapperNode
[2024-11-03 13:26:39,122 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 13:26:39,122 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 13:26:39,122 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 13:26:39,123 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 13:26:39,127 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,137 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,166 INFO  L138                Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124
[2024-11-03 13:26:39,166 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 13:26:39,167 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 13:26:39,167 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 13:26:39,170 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 13:26:39,178 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,178 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,183 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,202 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 13:26:39,202 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,202 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,212 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,221 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,223 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,224 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,226 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 13:26:39,227 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 13:26:39,227 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 13:26:39,227 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 13:26:39,227 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (1/1) ...
[2024-11-03 13:26:39,231 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 13:26:39,240 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 13:26:39,252 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 13:26:39,257 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 13:26:39,273 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 13:26:39,273 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 13:26:39,273 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 13:26:39,273 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 13:26:39,274 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 13:26:39,274 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 13:26:39,354 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 13:26:39,356 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 13:26:39,615 INFO  L?                        ?]: Removed 22 outVars from TransFormulas that were not future-live.
[2024-11-03 13:26:39,615 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 13:26:39,623 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 13:26:39,624 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 13:26:39,624 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:26:39 BoogieIcfgContainer
[2024-11-03 13:26:39,624 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 13:26:39,625 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 13:26:39,626 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 13:26:39,628 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 13:26:39,628 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:26:38" (1/3) ...
[2024-11-03 13:26:39,628 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@843946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:26:39, skipping insertion in model container
[2024-11-03 13:26:39,628 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:26:39" (2/3) ...
[2024-11-03 13:26:39,629 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@843946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:26:39, skipping insertion in model container
[2024-11-03 13:26:39,629 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:26:39" (3/3) ...
[2024-11-03 13:26:39,630 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-34.i
[2024-11-03 13:26:39,641 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 13:26:39,641 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 13:26:39,692 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 13:26:39,696 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;@6d20302a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 13:26:39,696 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 13:26:39,699 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 52 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-03 13:26:39,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2024-11-03 13:26:39,705 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:26:39,706 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:39,706 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:26:39,709 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:26:39,709 INFO  L85        PathProgramCache]: Analyzing trace with hash 945974761, now seen corresponding path program 1 times
[2024-11-03 13:26:39,715 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:26:39,715 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181679314]
[2024-11-03 13:26:39,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:26:39,717 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:26:39,718 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:39,720 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 13:26:39,724 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process
[2024-11-03 13:26:39,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:26:39,812 INFO  L255         TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 13:26:39,824 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:26:39,855 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-03 13:26:39,856 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:26:39,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2024-11-03 13:26:39,945 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:26:39,945 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181679314]
[2024-11-03 13:26:39,946 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1181679314] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:26:39,946 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:26:39,946 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 13:26:39,947 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189447469]
[2024-11-03 13:26:39,948 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:26:39,951 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 13:26:39,952 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:26:39,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 13:26:39,968 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 13:26:39,970 INFO  L87              Difference]: Start difference. First operand  has 52 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 37 states have internal predecessors, (52), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-03 13:26:39,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:26:39,989 INFO  L93              Difference]: Finished difference Result 97 states and 163 transitions.
[2024-11-03 13:26:39,993 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 13:26:39,994 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, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90
[2024-11-03 13:26:39,995 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:26:40,001 INFO  L225             Difference]: With dead ends: 97
[2024-11-03 13:26:40,001 INFO  L226             Difference]: Without dead ends: 48
[2024-11-03 13:26:40,004 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 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 13:26:40,007 INFO  L432           NwaCegarLoop]: 71 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, 71 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 13:26:40,008 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 13:26:40,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2024-11-03 13:26:40,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2024-11-03 13:26:40,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2024-11-03 13:26:40,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 71 transitions.
[2024-11-03 13:26:40,041 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 71 transitions. Word has length 90
[2024-11-03 13:26:40,042 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:26:40,042 INFO  L471      AbstractCegarLoop]: Abstraction has 48 states and 71 transitions.
[2024-11-03 13:26:40,042 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, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13)
[2024-11-03 13:26:40,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 71 transitions.
[2024-11-03 13:26:40,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2024-11-03 13:26:40,047 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:26:40,047 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:40,050 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0
[2024-11-03 13:26:40,247 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:40,248 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:26:40,249 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:26:40,249 INFO  L85        PathProgramCache]: Analyzing trace with hash 2128279915, now seen corresponding path program 1 times
[2024-11-03 13:26:40,249 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:26:40,249 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136894171]
[2024-11-03 13:26:40,249 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:26:40,249 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:26:40,249 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:40,253 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 13:26:40,257 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process
[2024-11-03 13:26:40,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:26:40,310 INFO  L255         TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-03 13:26:40,313 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:26:40,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-03 13:26:40,455 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:26:40,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-03 13:26:40,546 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:26:40,546 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136894171]
[2024-11-03 13:26:40,547 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2136894171] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:26:40,547 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:26:40,547 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6
[2024-11-03 13:26:40,547 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381887405]
[2024-11-03 13:26:40,547 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:26:40,548 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-03 13:26:40,548 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:26:40,549 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-03 13:26:40,549 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-03 13:26:40,549 INFO  L87              Difference]: Start difference. First operand 48 states and 71 transitions. Second operand  has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-03 13:26:40,858 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:26:40,859 INFO  L93              Difference]: Finished difference Result 255 states and 379 transitions.
[2024-11-03 13:26:40,863 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-03 13:26:40,863 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 90
[2024-11-03 13:26:40,864 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:26:40,866 INFO  L225             Difference]: With dead ends: 255
[2024-11-03 13:26:40,866 INFO  L226             Difference]: Without dead ends: 210
[2024-11-03 13:26:40,866 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2024-11-03 13:26:40,867 INFO  L432           NwaCegarLoop]: 90 mSDtfsCounter, 233 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 13:26:40,867 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 288 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 13:26:40,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 210 states.
[2024-11-03 13:26:40,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 94.
[2024-11-03 13:26:40,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 65 states have internal predecessors, (89), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 13:26:40,888 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 141 transitions.
[2024-11-03 13:26:40,888 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 141 transitions. Word has length 90
[2024-11-03 13:26:40,889 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:26:40,889 INFO  L471      AbstractCegarLoop]: Abstraction has 94 states and 141 transitions.
[2024-11-03 13:26:40,889 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-03 13:26:40,889 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 141 transitions.
[2024-11-03 13:26:40,890 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2024-11-03 13:26:40,890 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:26:40,890 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:40,895 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0
[2024-11-03 13:26:41,091 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:41,093 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:26:41,094 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:26:41,095 INFO  L85        PathProgramCache]: Analyzing trace with hash -981760802, now seen corresponding path program 1 times
[2024-11-03 13:26:41,095 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:26:41,095 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619295119]
[2024-11-03 13:26:41,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:26:41,095 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:26:41,095 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:41,100 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 13:26:41,101 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process
[2024-11-03 13:26:41,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:26:41,166 INFO  L255         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 13:26:41,168 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:26:41,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked.
[2024-11-03 13:26:41,267 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:26:41,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2024-11-03 13:26:41,385 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:26:41,385 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619295119]
[2024-11-03 13:26:41,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [619295119] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 13:26:41,385 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 13:26:41,385 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-03 13:26:41,385 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906933212]
[2024-11-03 13:26:41,386 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 13:26:41,386 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 13:26:41,386 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:26:41,387 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 13:26:41,387 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-03 13:26:41,387 INFO  L87              Difference]: Start difference. First operand 94 states and 141 transitions. Second operand  has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)
[2024-11-03 13:26:41,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:26:41,684 INFO  L93              Difference]: Finished difference Result 198 states and 288 transitions.
[2024-11-03 13:26:41,684 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-03 13:26:41,685 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91
[2024-11-03 13:26:41,685 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:26:41,686 INFO  L225             Difference]: With dead ends: 198
[2024-11-03 13:26:41,686 INFO  L226             Difference]: Without dead ends: 107
[2024-11-03 13:26:41,687 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2024-11-03 13:26:41,687 INFO  L432           NwaCegarLoop]: 77 mSDtfsCounter, 120 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 13:26:41,687 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 227 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 13:26:41,688 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2024-11-03 13:26:41,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101.
[2024-11-03 13:26:41,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 101 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 13:26:41,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 143 transitions.
[2024-11-03 13:26:41,712 INFO  L78                 Accepts]: Start accepts. Automaton has 101 states and 143 transitions. Word has length 91
[2024-11-03 13:26:41,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:26:41,712 INFO  L471      AbstractCegarLoop]: Abstraction has 101 states and 143 transitions.
[2024-11-03 13:26:41,712 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)
[2024-11-03 13:26:41,712 INFO  L276                IsEmpty]: Start isEmpty. Operand 101 states and 143 transitions.
[2024-11-03 13:26:41,717 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2024-11-03 13:26:41,717 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:26:41,718 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:41,721 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0
[2024-11-03 13:26:41,918 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:41,918 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:26:41,919 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:26:41,919 INFO  L85        PathProgramCache]: Analyzing trace with hash -1568566816, now seen corresponding path program 1 times
[2024-11-03 13:26:41,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:26:41,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589579924]
[2024-11-03 13:26:41,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:26:41,919 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:26:41,920 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:41,925 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 13:26:41,926 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process
[2024-11-03 13:26:42,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:26:42,005 INFO  L255         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 13:26:42,007 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 13:26:42,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-03 13:26:42,331 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 13:26:42,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2024-11-03 13:26:42,437 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 13:26:42,437 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589579924]
[2024-11-03 13:26:42,437 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1589579924] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 13:26:42,437 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 13:26:42,438 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9
[2024-11-03 13:26:42,438 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625789098]
[2024-11-03 13:26:42,438 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 13:26:42,438 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-03 13:26:42,438 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 13:26:42,439 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-03 13:26:42,439 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2024-11-03 13:26:42,439 INFO  L87              Difference]: Start difference. First operand 101 states and 143 transitions. Second operand  has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-03 13:26:42,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 13:26:42,903 INFO  L93              Difference]: Finished difference Result 428 states and 605 transitions.
[2024-11-03 13:26:42,903 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-03 13:26:42,904 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 91
[2024-11-03 13:26:42,904 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 13:26:42,906 INFO  L225             Difference]: With dead ends: 428
[2024-11-03 13:26:42,906 INFO  L226             Difference]: Without dead ends: 330
[2024-11-03 13:26:42,907 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2024-11-03 13:26:42,908 INFO  L432           NwaCegarLoop]: 107 mSDtfsCounter, 178 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2024-11-03 13:26:42,908 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 387 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2024-11-03 13:26:42,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 330 states.
[2024-11-03 13:26:42,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 105.
[2024-11-03 13:26:42,963 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 105 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 74 states have internal predecessors, (95), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2024-11-03 13:26:42,964 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 147 transitions.
[2024-11-03 13:26:42,964 INFO  L78                 Accepts]: Start accepts. Automaton has 105 states and 147 transitions. Word has length 91
[2024-11-03 13:26:42,965 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 13:26:42,965 INFO  L471      AbstractCegarLoop]: Abstraction has 105 states and 147 transitions.
[2024-11-03 13:26:42,965 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2024-11-03 13:26:42,965 INFO  L276                IsEmpty]: Start isEmpty. Operand 105 states and 147 transitions.
[2024-11-03 13:26:42,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2024-11-03 13:26:42,966 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 13:26:42,966 INFO  L215           NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:42,971 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0
[2024-11-03 13:26:43,166 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:43,167 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 13:26:43,167 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 13:26:43,167 INFO  L85        PathProgramCache]: Analyzing trace with hash -150746959, now seen corresponding path program 1 times
[2024-11-03 13:26:43,167 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 13:26:43,167 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835468446]
[2024-11-03 13:26:43,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 13:26:43,167 INFO  L173          SolverBuilder]: Constructing external solver with command: bitwuzla
[2024-11-03 13:26:43,168 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla
[2024-11-03 13:26:43,169 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null)
[2024-11-03 13:26:43,171 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process
[2024-11-03 13:26:43,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 13:26:43,227 INFO  L255         TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core
[2024-11-03 13:26:43,232 INFO  L278         TraceCheckSpWp]: Computing forward predicates...