/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.sw_loop_v.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-11-01 05:36:17,400 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-01 05:36:17,493 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-01 05:36:17,503 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-01 05:36:17,503 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-01 05:36:17,556 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-01 05:36:17,556 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-01 05:36:17,557 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-01 05:36:17,557 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-01 05:36:17,557 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-01 05:36:17,558 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-01 05:36:17,558 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-01 05:36:17,559 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-01 05:36:17,559 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-01 05:36:17,559 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-01 05:36:17,560 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-01 05:36:17,560 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-01 05:36:17,561 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-01 05:36:17,561 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-01 05:36:17,561 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-01 05:36:17,562 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-01 05:36:17,562 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-01 05:36:17,562 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-01 05:36:17,563 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-01 05:36:17,563 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-01 05:36:17,563 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-01 05:36:17,564 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-01 05:36:17,564 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-01 05:36:17,564 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-01 05:36:17,565 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-01 05:36:17,565 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-01 05:36:17,565 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 05:36:17,566 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-01 05:36:17,566 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-01 05:36:17,566 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-01 05:36:17,567 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-01 05:36:17,567 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-01 05:36:17,567 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-01 05:36:17,568 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-01 05:36:17,568 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-01 05:36:17,568 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-01 05:36:17,569 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-11-01 05:36:17,569 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:36:17,920 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-01 05:36:17,939 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-01 05:36:17,941 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-01 05:36:17,942 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-01 05:36:17,943 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-01 05:36:17,944 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c
[2024-11-01 05:36:19,593 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-01 05:36:19,884 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-01 05:36:19,884 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c
[2024-11-01 05:36:19,900 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d3b9adf/bdf46b4dcc7e4e48a966f200e32941c7/FLAG85dd08649
[2024-11-01 05:36:19,923 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d3b9adf/bdf46b4dcc7e4e48a966f200e32941c7
[2024-11-01 05:36:19,926 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-01 05:36:19,929 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-01 05:36:19,931 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-01 05:36:19,931 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-01 05:36:19,938 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-01 05:36:19,939 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:36:19" (1/1) ...
[2024-11-01 05:36:19,940 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2528f099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:19, skipping insertion in model container
[2024-11-01 05:36:19,940 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:36:19" (1/1) ...
[2024-11-01 05:36:19,985 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-01 05:36:20,190 WARN  L251   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.sw_loop_v.c[1249,1262]
[2024-11-01 05:36:20,348 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 05:36:20,373 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-01 05:36:20,388 WARN  L251   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.sw_loop_v.c[1249,1262]
[2024-11-01 05:36:20,451 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-01 05:36:20,472 INFO  L204         MainTranslator]: Completed translation
[2024-11-01 05:36:20,473 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20 WrapperNode
[2024-11-01 05:36:20,473 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-01 05:36:20,474 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-01 05:36:20,474 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-01 05:36:20,474 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-01 05:36:20,481 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,497 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,539 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 437
[2024-11-01 05:36:20,539 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-01 05:36:20,540 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-01 05:36:20,540 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-01 05:36:20,540 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-01 05:36:20,555 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,556 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,564 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,601 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].
[2024-11-01 05:36:20,602 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,602 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,620 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,624 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,627 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,630 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,636 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-01 05:36:20,637 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-01 05:36:20,637 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-01 05:36:20,637 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-01 05:36:20,638 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (1/1) ...
[2024-11-01 05:36:20,643 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-01 05:36:20,657 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:36:20,684 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)
[2024-11-01 05:36:20,689 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
[2024-11-01 05:36:20,718 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-01 05:36:20,719 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-01 05:36:20,719 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-01 05:36:20,720 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-01 05:36:20,895 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-01 05:36:20,897 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-01 05:36:21,406 INFO  L?                        ?]: Removed 25 outVars from TransFormulas that were not future-live.
[2024-11-01 05:36:21,406 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-01 05:36:21,419 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-01 05:36:21,420 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-01 05:36:21,420 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:36:21 BoogieIcfgContainer
[2024-11-01 05:36:21,421 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-01 05:36:21,425 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-01 05:36:21,427 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-01 05:36:21,430 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-01 05:36:21,431 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 05:36:19" (1/3) ...
[2024-11-01 05:36:21,432 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d463be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:36:21, skipping insertion in model container
[2024-11-01 05:36:21,432 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:36:20" (2/3) ...
[2024-11-01 05:36:21,433 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d463be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:36:21, skipping insertion in model container
[2024-11-01 05:36:21,433 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:36:21" (3/3) ...
[2024-11-01 05:36:21,436 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c
[2024-11-01 05:36:21,454 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-01 05:36:21,455 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-01 05:36:21,517 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-01 05:36:21,530 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;@6345627c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-01 05:36:21,530 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-01 05:36:21,536 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:21,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-01 05:36:21,544 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:36:21,546 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-01 05:36:21,547 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:36:21,553 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:36:21,554 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-01 05:36:21,562 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:36:21,563 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419549968]
[2024-11-01 05:36:21,564 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:36:21,566 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:36:21,567 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:36:21,569 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)
[2024-11-01 05:36:21,571 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-01 05:36:21,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:36:21,739 INFO  L255         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-01 05:36:21,748 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:36:21,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 05:36:21,878 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:36:21,956 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 05:36:21,958 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:36:21,958 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419549968]
[2024-11-01 05:36:21,959 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [419549968] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-01 05:36:21,959 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-01 05:36:21,959 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-01 05:36:21,961 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112535887]
[2024-11-01 05:36:21,964 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-01 05:36:21,968 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-01 05:36:21,968 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:36:21,992 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-01 05:36:21,992 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-01 05:36:21,994 INFO  L87              Difference]: Start difference. First operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:22,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:36:22,056 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-01 05:36:22,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-01 05:36:22,060 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-01 05:36:22,060 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:36:22,067 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 05:36:22,067 INFO  L226             Difference]: Without dead ends: 10
[2024-11-01 05:36:22,070 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-01 05:36:22,077 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-01 05:36:22,078 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-01 05:36:22,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-01 05:36:22,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-01 05:36:22,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:22,107 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-01 05:36:22,108 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-01 05:36:22,108 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:36:22,109 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-01 05:36:22,109 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:22,109 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-01 05:36:22,109 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-01 05:36:22,110 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:36:22,110 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-01 05:36:22,128 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-01 05:36:22,312 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
[2024-11-01 05:36:22,313 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:36:22,314 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:36:22,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-01 05:36:22,314 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:36:22,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818440510]
[2024-11-01 05:36:22,315 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:36:22,315 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:36:22,315 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:36:22,317 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)
[2024-11-01 05:36:22,318 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-01 05:36:22,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:36:22,516 INFO  L255         TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-11-01 05:36:22,522 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:36:22,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 05:36:22,789 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:36:23,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 05:36:23,146 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:36:23,146 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818440510]
[2024-11-01 05:36:23,147 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [818440510] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:36:23,147 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:36:23,147 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-11-01 05:36:23,147 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743003949]
[2024-11-01 05:36:23,147 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:36:23,148 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-01 05:36:23,149 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:36:23,150 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-01 05:36:23,151 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-11-01 05:36:23,151 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:23,273 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:36:23,273 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2024-11-01 05:36:23,274 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-01 05:36:23,274 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-01 05:36:23,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:36:23,275 INFO  L225             Difference]: With dead ends: 15
[2024-11-01 05:36:23,275 INFO  L226             Difference]: Without dead ends: 13
[2024-11-01 05:36:23,275 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132
[2024-11-01 05:36:23,276 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-01 05:36:23,277 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-01 05:36:23,278 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-11-01 05:36:23,279 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2024-11-01 05:36:23,280 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:23,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2024-11-01 05:36:23,280 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8
[2024-11-01 05:36:23,281 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:36:23,281 INFO  L471      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2024-11-01 05:36:23,281 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:36:23,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2024-11-01 05:36:23,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2024-11-01 05:36:23,282 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:36:23,282 INFO  L215           NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2024-11-01 05:36:23,302 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-01 05:36:23,482 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
[2024-11-01 05:36:23,483 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:36:23,483 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:36:23,484 INFO  L85        PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times
[2024-11-01 05:36:23,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:36:23,484 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836551716]
[2024-11-01 05:36:23,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:36:23,484 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:36:23,484 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:36:23,486 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)
[2024-11-01 05:36:23,488 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-01 05:36:23,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:36:23,699 WARN  L253         TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 51 conjuncts are in the unsatisfiable core
[2024-11-01 05:36:23,712 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-01 05:36:24,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-01 05:36:24,337 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-01 05:36:45,905 WARN  L851   $PredicateComparison]: unable to prove that (let ((.cse19 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_13~0#1|)) (.cse16 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_17~0#1|)) (.cse22 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_19~0#1|)) (.cse12 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_21~0#1|)) (.cse24 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_23~0#1|)) (.cse25 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_4~0#1|)) (.cse10 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse42 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_9~0#1|)) (.cse32 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_29~0#1|))) (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) .cse32))) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_27~0#1|)) (.cse3 (forall ((v_subst_6 (_ BitVec 8)) (v_subst_5 (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_11_arg_0~0#1_18| (_ BitVec 8)) (v_subst_7 (_ BitVec 8))) (let ((.cse44 ((_ zero_extend 24) v_subst_5))) (or (= ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_11_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv254 32) ((_ zero_extend 24) v_subst_6)))) ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse44 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv254 32) ((_ zero_extend 24) v_subst_7))))))))))))))))))))))) (_ bv0 8)) (not (= (_ bv0 8) ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse44)))))) .cse42))))))))))) (.cse5 (forall ((v_subst_2 (_ BitVec 8)) (v_subst_1 (_ BitVec 8)) (v_subst_3 (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_11_arg_0~0#1_18| (_ BitVec 8))) (let ((.cse43 ((_ zero_extend 24) v_subst_1))) (or (not (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse43)))))) .cse42))) .cse10)))) (= ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_11_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse43 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) v_subst_3))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) v_subst_2)))))))))))))))))))) (_ bv0 8)))))) (.cse9 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_32~0#1|)) (.cse6 (forall ((v_subst_4 (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_11_arg_0~0#1_18| (_ BitVec 8))) (let ((.cse41 ((_ zero_extend 24) v_subst_4))) (or (not (= (_ bv0 8) ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse41)))))) .cse42))))))) (= ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_11_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) .cse41))))))))))))) (_ bv0 8)))))) (.cse14 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse25)))) (.cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse24)))) (.cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse12)))) (.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse22)))) (.cse20 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse16)))) (.cse26 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse19)))) (.cse0 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_15~0#1|))) (and (or (not .cse0) (let ((.cse4 (= ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) .cse26))))) (let ((.cse21 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse20 .cse17))))) (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse21 .cse18))))) (let ((.cse23 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse13 .cse15))))) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 .cse13)))))) .cse14))) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse16 .cse17))) .cse18)))))) .cse11))) .cse14))) ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv255 32) .cse19))) .cse20))) .cse18)))))))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse21 .cse22))) .cse15)))))) .cse14))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse23 .cse24))) .cse14)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 .cse23))) .cse25)))))))))))) (_ bv0 8)))) (let ((.cse1 (bvslt ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse7 .cse8))) .cse9)) (.cse2 (or .cse6 (not .cse4)))) (and (or (not .cse1) (and .cse2 (or .cse3 .cse4))) (or .cse1 (and .cse2 (or .cse5 .cse4))))))) (or (let ((.cse33 (= (_ bv0 8) ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse39 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_15~0#1|))) (let ((.cse38 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse39))))) (let ((.cse37 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse38 .cse26))))) (let ((.cse36 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse37 .cse20))))) (let ((.cse40 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse18 .cse36))))) (let ((.cse35 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse40 .cse15))))) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse35 .cse24))) .cse14))) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse36 .cse22))) .cse15)))))) .cse14))) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse37 .cse16))) .cse18)))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse38 .cse19))) .cse20))) .cse18))) .cse15))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse26 .cse39))) .cse20))) .cse18)))))) .cse11))))))))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse11 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse40 .cse12)))))) .cse14))))))))) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse35 .cse11))) .cse25))))))))))))))))) (let ((.cse34 (or (not .cse33) .cse6))) (let ((.cse27 (bvslt .cse32 .cse9)) (.cse30 (and (or .cse5 .cse33) .cse34)) (.cse29 (and (or .cse33 .cse3) .cse34))) (and (or .cse27 (let ((.cse28 (bvslt ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) .cse7)))) .cse8))) .cse9))) (and (or (not .cse28) .cse29) (or .cse28 .cse30)))) (or (not .cse27) (let ((.cse31 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_25~0#1|))) (and (or .cse29 (not .cse31)) (or .cse31 (and (or (forall ((|ULTIMATE.start_main_~var_158~0#1| (_ BitVec 8))) (bvslt ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) |ULTIMATE.start_main_~var_158~0#1|) .cse32))))))))) .cse8))) .cse9)) .cse30) (or (forall ((|ULTIMATE.start_main_~var_158~0#1| (_ BitVec 8))) (not (bvslt ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) |ULTIMATE.start_main_~var_158~0#1|) .cse32))))))))) .cse8))) .cse9))) .cse29)))))))))) .cse0)))) is different from false
[2024-11-01 05:37:13,027 WARN  L286               SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 466 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-11-01 05:37:21,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked.
[2024-11-01 05:37:21,497 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-01 05:37:21,497 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836551716]
[2024-11-01 05:37:21,497 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [836551716] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-01 05:37:21,498 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-01 05:37:21,498 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-11-01 05:37:21,498 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986755200]
[2024-11-01 05:37:21,498 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-01 05:37:21,498 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-01 05:37:21,498 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-01 05:37:21,501 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-01 05:37:21,503 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=153, Unknown=5, NotChecked=26, Total=240
[2024-11-01 05:37:21,504 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:37:29,872 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-01 05:37:29,873 INFO  L93              Difference]: Finished difference Result 18 states and 18 transitions.
[2024-11-01 05:37:29,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-01 05:37:29,874 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2024-11-01 05:37:29,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-01 05:37:29,875 INFO  L225             Difference]: With dead ends: 18
[2024-11-01 05:37:29,875 INFO  L226             Difference]: Without dead ends: 16
[2024-11-01 05:37:29,875 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=105, Invalid=236, Unknown=5, NotChecked=34, Total=380
[2024-11-01 05:37:29,876 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time
[2024-11-01 05:37:29,877 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 24 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 10 Unchecked, 2.0s Time]
[2024-11-01 05:37:29,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-01 05:37:29,880 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-01 05:37:29,880 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:37:29,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-01 05:37:29,881 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11
[2024-11-01 05:37:29,881 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-01 05:37:29,881 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-01 05:37:29,881 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-01 05:37:29,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-01 05:37:29,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-01 05:37:29,882 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-01 05:37:29,882 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-01 05:37:29,901 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-01 05:37:30,083 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
[2024-11-01 05:37:30,084 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-01 05:37:30,084 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-01 05:37:30,084 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times
[2024-11-01 05:37:30,085 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-01 05:37:30,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587624840]
[2024-11-01 05:37:30,085 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-01 05:37:30,085 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-01 05:37:30,085 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-01 05:37:30,087 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)
[2024-11-01 05:37:30,089 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-01 05:37:30,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-01 05:37:30,302 WARN  L253         TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 71 conjuncts are in the unsatisfiable core
[2024-11-01 05:37:30,311 INFO  L278         TraceCheckSpWp]: Computing forward predicates...