/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-40.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 06:09:14,578 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 06:09:14,622 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-23 06:09:14,634 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 06:09:14,634 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 06:09:14,653 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 06:09:14,653 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 06:09:14,654 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 06:09:14,654 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 06:09:14,654 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 06:09:14,655 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 06:09:14,655 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 06:09:14,655 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 06:09:14,656 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 06:09:14,656 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 06:09:14,656 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 06:09:14,656 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 06:09:14,657 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 06:09:14,657 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 06:09:14,657 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 06:09:14,657 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 06:09:14,660 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 06:09:14,660 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 06:09:14,661 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 06:09:14,661 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 06:09:14,661 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 06:09:14,661 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 06:09:14,661 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 06:09:14,662 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 06:09:14,662 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 06:09:14,662 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 06:09:14,662 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 06:09:14,662 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 06:09:14,663 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 06:09:14,663 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 06:09:14,663 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 06:09:14,663 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 06:09:14,664 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 06:09:14,664 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 06:09:14,664 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 06:09:14,664 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 06:09:14,667 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 06:09:14,668 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 06:09:14,668 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 06:09:14,668 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 06:09:14,668 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 06:09:14,668 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 06:09:14,910 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 06:09:14,937 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 06:09:14,939 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 06:09:14,939 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 06:09:14,941 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 06:09:14,942 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-40.i
[2023-12-23 06:09:16,074 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 06:09:16,233 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 06:09:16,233 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-40.i
[2023-12-23 06:09:16,249 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c565b46/941fb62b28954bb3babd21ec9ee55a32/FLAG06a394929
[2023-12-23 06:09:16,259 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c565b46/941fb62b28954bb3babd21ec9ee55a32
[2023-12-23 06:09:16,261 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 06:09:16,262 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 06:09:16,263 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 06:09:16,263 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 06:09:16,266 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 06:09:16,267 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,267 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3960a86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16, skipping insertion in model container
[2023-12-23 06:09:16,268 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,305 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 06:09:16,421 WARN  L239   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_fillercode_fillercodesize_ps-cn-50_file-40.i[915,928]
[2023-12-23 06:09:16,476 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 06:09:16,493 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 06:09:16,501 WARN  L239   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_fillercode_fillercodesize_ps-cn-50_file-40.i[915,928]
[2023-12-23 06:09:16,524 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 06:09:16,537 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 06:09:16,537 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16 WrapperNode
[2023-12-23 06:09:16,537 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 06:09:16,538 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 06:09:16,538 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 06:09:16,538 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 06:09:16,546 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,554 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,578 INFO  L138                Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 187
[2023-12-23 06:09:16,578 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 06:09:16,579 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 06:09:16,579 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 06:09:16,579 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 06:09:16,591 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,591 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,594 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,605 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].
[2023-12-23 06:09:16,605 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,605 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,614 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,617 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,624 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,625 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,639 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 06:09:16,640 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 06:09:16,640 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 06:09:16,640 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 06:09:16,641 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (1/1) ...
[2023-12-23 06:09:16,645 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 06:09:16,655 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 06:09:16,690 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)
[2023-12-23 06:09:16,744 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
[2023-12-23 06:09:16,772 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 06:09:16,772 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 06:09:16,773 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 06:09:16,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 06:09:16,773 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 06:09:16,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 06:09:16,850 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 06:09:16,852 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 06:09:26,304 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 06:09:26,351 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 06:09:26,351 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 06:09:26,352 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:09:26 BoogieIcfgContainer
[2023-12-23 06:09:26,352 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 06:09:26,354 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 06:09:26,354 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 06:09:26,356 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 06:09:26,356 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:09:16" (1/3) ...
[2023-12-23 06:09:26,357 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679941ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:09:26, skipping insertion in model container
[2023-12-23 06:09:26,357 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:09:16" (2/3) ...
[2023-12-23 06:09:26,357 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679941ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:09:26, skipping insertion in model container
[2023-12-23 06:09:26,357 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:09:26" (3/3) ...
[2023-12-23 06:09:26,358 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-40.i
[2023-12-23 06:09:26,379 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 06:09:26,379 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 06:09:26,432 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 06:09:26,440 INFO  L357      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, mHoare=true, 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;@75fcf899, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 06:09:26,441 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 06:09:26,444 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 77 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 06:09:26,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2023-12-23 06:09:26,459 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 06:09:26,460 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 06:09:26,461 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 06:09:26,465 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 06:09:26,465 INFO  L85        PathProgramCache]: Analyzing trace with hash -733217589, now seen corresponding path program 1 times
[2023-12-23 06:09:26,477 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 06:09:26,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833137581]
[2023-12-23 06:09:26,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 06:09:26,479 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:26,479 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 06:09:26,481 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 06:09:26,504 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-23 06:09:27,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 06:09:27,464 INFO  L262         TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 06:09:27,472 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 06:09:27,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked.
[2023-12-23 06:09:27,503 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 06:09:27,504 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 06:09:27,504 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833137581]
[2023-12-23 06:09:27,504 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [833137581] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 06:09:27,504 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 06:09:27,504 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 06:09:27,506 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566063413]
[2023-12-23 06:09:27,506 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 06:09:27,509 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 06:09:27,509 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 06:09:27,552 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 06:09:27,552 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 06:09:27,557 INFO  L87              Difference]: Start difference. First operand  has 77 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 49 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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)
[2023-12-23 06:09:27,966 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 06:09:27,967 INFO  L93              Difference]: Finished difference Result 151 states and 270 transitions.
[2023-12-23 06:09:27,980 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 06:09:27,982 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 168
[2023-12-23 06:09:27,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 06:09:27,992 INFO  L225             Difference]: With dead ends: 151
[2023-12-23 06:09:27,992 INFO  L226             Difference]: Without dead ends: 75
[2023-12-23 06:09:27,995 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 06:09:27,997 INFO  L413           NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 06:09:27,997 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 06:09:28,023 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2023-12-23 06:09:28,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75.
[2023-12-23 06:09:28,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 75 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 47 states have internal predecessors, (65), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 06:09:28,087 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 117 transitions.
[2023-12-23 06:09:28,105 INFO  L78                 Accepts]: Start accepts. Automaton has 75 states and 117 transitions. Word has length 168
[2023-12-23 06:09:28,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 06:09:28,105 INFO  L495      AbstractCegarLoop]: Abstraction has 75 states and 117 transitions.
[2023-12-23 06:09:28,106 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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)
[2023-12-23 06:09:28,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 75 states and 117 transitions.
[2023-12-23 06:09:28,113 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2023-12-23 06:09:28,114 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 06:09:28,114 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 06:09:28,137 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-23 06:09:28,333 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:28,334 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 06:09:28,334 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 06:09:28,334 INFO  L85        PathProgramCache]: Analyzing trace with hash -1943206582, now seen corresponding path program 1 times
[2023-12-23 06:09:28,335 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 06:09:28,335 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899997639]
[2023-12-23 06:09:28,335 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 06:09:28,335 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:28,336 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 06:09:28,353 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 06:09:28,388 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-23 06:09:29,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 06:09:29,266 INFO  L262         TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 06:09:29,270 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 06:09:30,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked.
[2023-12-23 06:09:30,999 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 06:09:32,224 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2023-12-23 06:09:32,224 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 06:09:32,224 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899997639]
[2023-12-23 06:09:32,224 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [899997639] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 06:09:32,224 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 06:09:32,225 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2023-12-23 06:09:32,225 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676441774]
[2023-12-23 06:09:32,225 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 06:09:32,226 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-23 06:09:32,226 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 06:09:32,227 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-23 06:09:32,227 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-12-23 06:09:32,228 INFO  L87              Difference]: Start difference. First operand 75 states and 117 transitions. Second operand  has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44)
[2023-12-23 06:09:35,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 06:09:35,690 INFO  L93              Difference]: Finished difference Result 235 states and 355 transitions.
[2023-12-23 06:09:35,693 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-12-23 06:09:35,693 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 169
[2023-12-23 06:09:35,694 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 06:09:35,695 INFO  L225             Difference]: With dead ends: 235
[2023-12-23 06:09:35,695 INFO  L226             Difference]: Without dead ends: 161
[2023-12-23 06:09:35,696 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2023-12-23 06:09:35,697 INFO  L413           NwaCegarLoop]: 140 mSDtfsCounter, 225 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2023-12-23 06:09:35,700 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 387 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time]
[2023-12-23 06:09:35,701 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2023-12-23 06:09:35,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 77.
[2023-12-23 06:09:35,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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)
[2023-12-23 06:09:35,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 114 transitions.
[2023-12-23 06:09:35,719 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 114 transitions. Word has length 169
[2023-12-23 06:09:35,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 06:09:35,721 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 114 transitions.
[2023-12-23 06:09:35,721 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44)
[2023-12-23 06:09:35,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 114 transitions.
[2023-12-23 06:09:35,724 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2023-12-23 06:09:35,724 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 06:09:35,725 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 06:09:35,745 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-23 06:09:35,929 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:35,930 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 06:09:35,930 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 06:09:35,930 INFO  L85        PathProgramCache]: Analyzing trace with hash 1958733704, now seen corresponding path program 1 times
[2023-12-23 06:09:35,931 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 06:09:35,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366781011]
[2023-12-23 06:09:35,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 06:09:35,931 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:35,931 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 06:09:35,936 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 06:09:35,938 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-12-23 06:09:36,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 06:09:36,865 INFO  L262         TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 06:09:36,869 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 06:09:36,965 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-23 06:09:36,965 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 06:09:36,965 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 06:09:36,966 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366781011]
[2023-12-23 06:09:36,966 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [366781011] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 06:09:36,966 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 06:09:36,966 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 06:09:36,966 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282881255]
[2023-12-23 06:09:36,966 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 06:09:36,967 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 06:09:36,967 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 06:09:36,967 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 06:09:36,967 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 06:09:36,967 INFO  L87              Difference]: Start difference. First operand 77 states and 114 transitions. Second operand  has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 06:09:37,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 06:09:37,334 INFO  L93              Difference]: Finished difference Result 153 states and 227 transitions.
[2023-12-23 06:09:37,349 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 06:09:37,350 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169
[2023-12-23 06:09:37,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 06:09:37,351 INFO  L225             Difference]: With dead ends: 153
[2023-12-23 06:09:37,351 INFO  L226             Difference]: Without dead ends: 77
[2023-12-23 06:09:37,352 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 06:09:37,353 INFO  L413           NwaCegarLoop]: 106 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 06:09:37,354 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 204 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 06:09:37,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-12-23 06:09:37,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2023-12-23 06:09:37,363 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 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)
[2023-12-23 06:09:37,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 113 transitions.
[2023-12-23 06:09:37,364 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 113 transitions. Word has length 169
[2023-12-23 06:09:37,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 06:09:37,365 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 113 transitions.
[2023-12-23 06:09:37,365 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 06:09:37,365 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 113 transitions.
[2023-12-23 06:09:37,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2023-12-23 06:09:37,367 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 06:09:37,367 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 06:09:37,402 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-12-23 06:09:37,592 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:37,592 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 06:09:37,593 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 06:09:37,593 INFO  L85        PathProgramCache]: Analyzing trace with hash -561226230, now seen corresponding path program 1 times
[2023-12-23 06:09:37,594 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 06:09:37,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623678125]
[2023-12-23 06:09:37,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 06:09:37,594 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:37,594 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 06:09:37,595 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 06:09:37,641 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 06:09:38,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 06:09:38,547 INFO  L262         TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 06:09:38,550 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 06:09:38,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-23 06:09:38,919 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 06:09:38,921 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 06:09:38,922 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623678125]
[2023-12-23 06:09:38,922 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623678125] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 06:09:38,922 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 06:09:38,922 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-23 06:09:38,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851488290]
[2023-12-23 06:09:38,922 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 06:09:38,923 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-23 06:09:38,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 06:09:38,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-23 06:09:38,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-23 06:09:38,923 INFO  L87              Difference]: Start difference. First operand 77 states and 113 transitions. Second operand  has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 06:09:40,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 06:09:40,879 INFO  L93              Difference]: Finished difference Result 289 states and 426 transitions.
[2023-12-23 06:09:40,882 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-23 06:09:40,882 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169
[2023-12-23 06:09:40,883 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 06:09:40,884 INFO  L225             Difference]: With dead ends: 289
[2023-12-23 06:09:40,884 INFO  L226             Difference]: Without dead ends: 213
[2023-12-23 06:09:40,885 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2023-12-23 06:09:40,886 INFO  L413           NwaCegarLoop]: 187 mSDtfsCounter, 242 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2023-12-23 06:09:40,887 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 439 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2023-12-23 06:09:40,887 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2023-12-23 06:09:40,913 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 130.
[2023-12-23 06:09:40,914 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 130 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 73 states have internal predecessors, (85), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52)
[2023-12-23 06:09:40,915 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 189 transitions.
[2023-12-23 06:09:40,915 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 189 transitions. Word has length 169
[2023-12-23 06:09:40,915 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 06:09:40,915 INFO  L495      AbstractCegarLoop]: Abstraction has 130 states and 189 transitions.
[2023-12-23 06:09:40,916 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 06:09:40,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 189 transitions.
[2023-12-23 06:09:40,917 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2023-12-23 06:09:40,917 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 06:09:40,917 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 06:09:40,951 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-23 06:09:41,142 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:41,143 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 06:09:41,143 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 06:09:41,143 INFO  L85        PathProgramCache]: Analyzing trace with hash -561166648, now seen corresponding path program 1 times
[2023-12-23 06:09:41,144 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 06:09:41,144 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987479258]
[2023-12-23 06:09:41,144 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 06:09:41,144 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 06:09:41,144 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 06:09:41,145 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 06:09:41,170 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-12-23 06:09:42,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 06:09:42,145 INFO  L262         TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-23 06:09:42,149 INFO  L285         TraceCheckSpWp]: Computing forward predicates...