/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-04 17:10:57,248 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-04 17:10:57,328 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-04 17:10:57,332 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-04 17:10:57,333 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-04 17:10:57,362 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-04 17:10:57,362 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-04 17:10:57,363 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-04 17:10:57,365 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-04 17:10:57,366 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-04 17:10:57,366 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-04 17:10:57,367 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-04 17:10:57,367 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-04 17:10:57,368 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-04 17:10:57,368 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-04 17:10:57,368 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-04 17:10:57,369 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-04 17:10:57,369 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-04 17:10:57,369 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-04 17:10:57,369 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-04 17:10:57,370 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-04 17:10:57,370 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-04 17:10:57,371 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-04 17:10:57,371 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-04 17:10:57,371 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-04 17:10:57,371 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-04 17:10:57,372 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-04 17:10:57,372 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-04 17:10:57,372 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-04 17:10:57,372 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-04 17:10:57,373 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-04 17:10:57,373 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:10:57,373 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-04 17:10:57,373 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-04 17:10:57,374 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-04 17:10:57,374 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-04 17:10:57,374 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-04 17:10:57,374 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-04 17:10:57,375 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-04 17:10:57,375 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-04 17:10:57,375 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-04 17:10:57,375 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:10:57,611 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-04 17:10:57,634 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-04 17:10:57,638 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-04 17:10:57,639 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-04 17:10:57,639 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-04 17:10:57,640 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c
[2024-11-04 17:10:59,081 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-04 17:10:59,356 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-04 17:10:59,356 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c
[2024-11-04 17:10:59,371 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6141bdb15/a10a07c259bf41669e4f634e717972b0/FLAGf135ea2fd
[2024-11-04 17:10:59,388 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6141bdb15/a10a07c259bf41669e4f634e717972b0
[2024-11-04 17:10:59,391 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-04 17:10:59,392 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-04 17:10:59,393 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-04 17:10:59,393 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-04 17:10:59,398 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-04 17:10:59,398 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:10:59" (1/1) ...
[2024-11-04 17:10:59,399 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3dde8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:10:59, skipping insertion in model container
[2024-11-04 17:10:59,399 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:10:59" (1/1) ...
[2024-11-04 17:10:59,453 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-04 17:10:59,630 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326]
[2024-11-04 17:10:59,868 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:10:59,879 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-04 17:10:59,899 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326]
[2024-11-04 17:11:00,030 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 17:11:00,046 INFO  L204         MainTranslator]: Completed translation
[2024-11-04 17:11:00,046 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00 WrapperNode
[2024-11-04 17:11:00,047 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-04 17:11:00,048 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-04 17:11:00,048 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-04 17:11:00,048 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-04 17:11:00,054 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,076 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,119 INFO  L138                Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 762
[2024-11-04 17:11:00,120 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-04 17:11:00,121 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-04 17:11:00,121 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-04 17:11:00,121 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-04 17:11:00,132 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,132 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,142 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,171 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].
[2024-11-04 17:11:00,171 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,172 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,190 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,198 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,205 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,215 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,230 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-04 17:11:00,231 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-04 17:11:00,231 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-04 17:11:00,231 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-04 17:11:00,232 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (1/1) ...
[2024-11-04 17:11:00,240 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 17:11:00,253 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:00,272 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)
[2024-11-04 17:11:00,281 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
[2024-11-04 17:11:00,306 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-04 17:11:00,306 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-04 17:11:00,306 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-04 17:11:00,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-04 17:11:00,307 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-04 17:11:00,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-04 17:11:00,526 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-04 17:11:00,528 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-04 17:11:01,625 INFO  L?                        ?]: Removed 344 outVars from TransFormulas that were not future-live.
[2024-11-04 17:11:01,625 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-04 17:11:01,635 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-04 17:11:01,635 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-04 17:11:01,636 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:11:01 BoogieIcfgContainer
[2024-11-04 17:11:01,636 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-04 17:11:01,638 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-04 17:11:01,638 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-04 17:11:01,641 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-04 17:11:01,642 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:10:59" (1/3) ...
[2024-11-04 17:11:01,642 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f29d32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:11:01, skipping insertion in model container
[2024-11-04 17:11:01,643 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:11:00" (2/3) ...
[2024-11-04 17:11:01,643 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f29d32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:11:01, skipping insertion in model container
[2024-11-04 17:11:01,643 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:11:01" (3/3) ...
[2024-11-04 17:11:01,645 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c
[2024-11-04 17:11:01,660 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-04 17:11:01,661 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-04 17:11:01,712 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-04 17:11:01,720 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;@486029c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-04 17:11:01,720 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-04 17:11:01,725 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-04 17:11:01,731 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-04 17:11:01,732 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:01,733 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-04 17:11:01,734 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:01,738 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:01,739 INFO  L85        PathProgramCache]: Analyzing trace with hash 896107007, now seen corresponding path program 1 times
[2024-11-04 17:11:01,747 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:01,748 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719545816]
[2024-11-04 17:11:01,748 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:01,750 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:01,750 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:01,752 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:01,754 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-04 17:11:02,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:02,210 INFO  L255         TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 23 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:02,221 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:02,709 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-04 17:11:02,709 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:03,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-04 17:11:03,479 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:03,479 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719545816]
[2024-11-04 17:11:03,480 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [719545816] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:03,480 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:03,480 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2024-11-04 17:11:03,483 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394620381]
[2024-11-04 17:11:03,483 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:03,487 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-04 17:11:03,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:03,512 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-04 17:11:03,513 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2024-11-04 17:11:03,515 INFO  L87              Difference]: Start difference. First operand  has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-04 17:11:04,101 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:04,101 INFO  L93              Difference]: Finished difference Result 38 states and 53 transitions.
[2024-11-04 17:11:04,103 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-04 17:11:04,104 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17
[2024-11-04 17:11:04,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:04,110 INFO  L225             Difference]: With dead ends: 38
[2024-11-04 17:11:04,110 INFO  L226             Difference]: Without dead ends: 22
[2024-11-04 17:11:04,113 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2024-11-04 17:11:04,115 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:04,116 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-04 17:11:04,131 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-11-04 17:11:04,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2024-11-04 17:11:04,147 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-04 17:11:04,148 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions.
[2024-11-04 17:11:04,149 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 17
[2024-11-04 17:11:04,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:04,151 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 24 transitions.
[2024-11-04 17:11:04,151 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4)
[2024-11-04 17:11:04,151 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions.
[2024-11-04 17:11:04,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-04 17:11:04,152 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:04,153 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-04 17:11:04,174 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-04 17:11:04,356 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:04,357 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:04,357 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:04,358 INFO  L85        PathProgramCache]: Analyzing trace with hash 91156387, now seen corresponding path program 1 times
[2024-11-04 17:11:04,358 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:04,358 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104689733]
[2024-11-04 17:11:04,358 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:04,358 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:04,359 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:04,360 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:04,362 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-04 17:11:04,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:05,007 INFO  L255         TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 27 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:05,018 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:05,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-04 17:11:05,582 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:06,301 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-04 17:11:06,302 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:06,302 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104689733]
[2024-11-04 17:11:06,302 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [2104689733] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:06,302 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:06,302 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-04 17:11:06,302 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125507071]
[2024-11-04 17:11:06,303 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:06,304 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-04 17:11:06,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:06,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-04 17:11:06,305 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-04 17:11:06,306 INFO  L87              Difference]: Start difference. First operand 21 states and 24 transitions. Second operand  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-04 17:11:08,967 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:08,967 INFO  L93              Difference]: Finished difference Result 45 states and 56 transitions.
[2024-11-04 17:11:08,968 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-04 17:11:08,968 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32
[2024-11-04 17:11:08,968 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:08,969 INFO  L225             Difference]: With dead ends: 45
[2024-11-04 17:11:08,969 INFO  L226             Difference]: Without dead ends: 43
[2024-11-04 17:11:08,970 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210
[2024-11-04 17:11:08,971 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:08,971 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 46 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]
[2024-11-04 17:11:08,972 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2024-11-04 17:11:08,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42.
[2024-11-04 17:11:08,983 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-11-04 17:11:08,984 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2024-11-04 17:11:08,984 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 32
[2024-11-04 17:11:08,985 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:08,985 INFO  L471      AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2024-11-04 17:11:08,985 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2024-11-04 17:11:08,985 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2024-11-04 17:11:08,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2024-11-04 17:11:08,987 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:08,987 INFO  L215           NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1]
[2024-11-04 17:11:09,022 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-11-04 17:11:09,188 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:09,188 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:09,189 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:09,189 INFO  L85        PathProgramCache]: Analyzing trace with hash 257648895, now seen corresponding path program 2 times
[2024-11-04 17:11:09,189 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:09,189 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936983326]
[2024-11-04 17:11:09,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:09,190 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:09,190 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:09,191 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:09,194 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-04 17:11:10,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:10,490 INFO  L255         TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 31 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:10,502 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 17:11:11,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-04 17:11:11,928 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 17:11:13,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked.
[2024-11-04 17:11:13,988 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 17:11:13,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936983326]
[2024-11-04 17:11:13,989 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [936983326] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 17:11:13,989 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 17:11:13,989 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-04 17:11:13,989 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705805442]
[2024-11-04 17:11:13,989 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 17:11:13,990 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-04 17:11:13,990 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 17:11:13,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-04 17:11:13,993 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2024-11-04 17:11:13,993 INFO  L87              Difference]: Start difference. First operand 42 states and 51 transitions. Second operand  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-04 17:11:18,004 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 17:11:18,004 INFO  L93              Difference]: Finished difference Result 59 states and 73 transitions.
[2024-11-04 17:11:18,005 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-04 17:11:18,005 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 77
[2024-11-04 17:11:18,006 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 17:11:18,007 INFO  L225             Difference]: With dead ends: 59
[2024-11-04 17:11:18,007 INFO  L226             Difference]: Without dead ends: 57
[2024-11-04 17:11:18,008 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462
[2024-11-04 17:11:18,010 INFO  L432           NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time
[2024-11-04 17:11:18,011 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 208 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time]
[2024-11-04 17:11:18,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2024-11-04 17:11:18,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56.
[2024-11-04 17:11:18,027 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2024-11-04 17:11:18,028 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions.
[2024-11-04 17:11:18,029 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 77
[2024-11-04 17:11:18,029 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 17:11:18,029 INFO  L471      AbstractCegarLoop]: Abstraction has 56 states and 69 transitions.
[2024-11-04 17:11:18,030 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 10 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20)
[2024-11-04 17:11:18,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions.
[2024-11-04 17:11:18,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2024-11-04 17:11:18,032 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 17:11:18,032 INFO  L215           NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1]
[2024-11-04 17:11:18,105 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-11-04 17:11:18,233 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:18,233 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 17:11:18,234 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 17:11:18,234 INFO  L85        PathProgramCache]: Analyzing trace with hash -761811841, now seen corresponding path program 3 times
[2024-11-04 17:11:18,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 17:11:18,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859344079]
[2024-11-04 17:11:18,235 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 17:11:18,235 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-04 17:11:18,235 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 17:11:18,236 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-04 17:11:18,237 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-04 17:11:25,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 17:11:25,857 WARN  L253         TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 1187 conjuncts are in the unsatisfiable core
[2024-11-04 17:11:25,970 INFO  L278         TraceCheckSpWp]: Computing forward predicates...