/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-25_file-68.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 03:54:45,252 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 03:54:45,315 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 03:54:45,318 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 03:54:45,318 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 03:54:45,344 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 03:54:45,345 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 03:54:45,345 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 03:54:45,345 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 03:54:45,348 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 03:54:45,348 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 03:54:45,349 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 03:54:45,349 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 03:54:45,350 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 03:54:45,350 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 03:54:45,350 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 03:54:45,351 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 03:54:45,351 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 03:54:45,351 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 03:54:45,351 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 03:54:45,351 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 03:54:45,352 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 03:54:45,353 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 03:54:45,353 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 03:54:45,353 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 03:54:45,354 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 03:54:45,354 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 03:54:45,355 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 03:54:45,355 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 03:54:45,355 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 03:54:45,356 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 03:54:45,356 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 03:54:45,356 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 03:54:45,356 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 03:54:45,356 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 03:54:45,558 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 03:54:45,572 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 03:54:45,573 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 03:54:45,574 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 03:54:45,574 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 03:54:45,576 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-68.i
[2023-12-23 03:54:46,764 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 03:54:46,946 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 03:54:46,946 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-68.i
[2023-12-23 03:54:46,954 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558b29953/ebba02ca706a471098d08e5feeefe32c/FLAG2f3585120
[2023-12-23 03:54:46,968 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/558b29953/ebba02ca706a471098d08e5feeefe32c
[2023-12-23 03:54:46,969 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 03:54:46,970 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 03:54:46,971 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 03:54:46,971 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 03:54:46,975 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 03:54:46,975 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:54:46" (1/1) ...
[2023-12-23 03:54:46,976 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fe8d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:46, skipping insertion in model container
[2023-12-23 03:54:46,976 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:54:46" (1/1) ...
[2023-12-23 03:54:47,015 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 03:54:47,112 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-25_file-68.i[915,928]
[2023-12-23 03:54:47,152 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 03:54:47,177 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 03:54:47,185 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-25_file-68.i[915,928]
[2023-12-23 03:54:47,204 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 03:54:47,215 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 03:54:47,215 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47 WrapperNode
[2023-12-23 03:54:47,215 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 03:54:47,216 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 03:54:47,216 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 03:54:47,216 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 03:54:47,220 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,243 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,269 INFO  L138                Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 177
[2023-12-23 03:54:47,270 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 03:54:47,270 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 03:54:47,271 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 03:54:47,271 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 03:54:47,278 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,279 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,282 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,298 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 03:54:47,299 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,299 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,306 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,308 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,312 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,313 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,316 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 03:54:47,317 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 03:54:47,317 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 03:54:47,317 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 03:54:47,318 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (1/1) ...
[2023-12-23 03:54:47,325 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 03:54:47,347 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 03:54:47,374 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 03:54:47,429 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 03:54:47,434 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 03:54:47,435 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 03:54:47,435 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 03:54:47,436 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 03:54:47,436 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 03:54:47,437 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 03:54:47,549 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 03:54:47,551 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 03:54:48,925 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 03:54:48,995 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 03:54:48,995 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 03:54:48,996 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:54:48 BoogieIcfgContainer
[2023-12-23 03:54:48,996 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 03:54:48,997 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 03:54:48,998 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 03:54:49,000 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 03:54:49,000 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:54:46" (1/3) ...
[2023-12-23 03:54:49,000 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1566e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:54:49, skipping insertion in model container
[2023-12-23 03:54:49,000 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:54:47" (2/3) ...
[2023-12-23 03:54:49,001 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1566e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:54:49, skipping insertion in model container
[2023-12-23 03:54:49,001 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:54:48" (3/3) ...
[2023-12-23 03:54:49,002 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-68.i
[2023-12-23 03:54:49,028 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 03:54:49,028 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 03:54:49,066 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 03:54:49,071 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;@5ed52a41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 03:54:49,071 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 03:54:49,074 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 71 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 03:54:49,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2023-12-23 03:54:49,085 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 03:54:49,086 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:49,086 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 03:54:49,090 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 03:54:49,090 INFO  L85        PathProgramCache]: Analyzing trace with hash -1567210679, now seen corresponding path program 1 times
[2023-12-23 03:54:49,100 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 03:54:49,100 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470709028]
[2023-12-23 03:54:49,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 03:54:49,101 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 03:54:49,101 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 03:54:49,103 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 03:54:49,104 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 03:54:49,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 03:54:49,459 INFO  L262         TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 03:54:49,466 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 03:54:49,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-12-23 03:54:49,519 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 03:54:49,520 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 03:54:49,520 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470709028]
[2023-12-23 03:54:49,521 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [470709028] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 03:54:49,521 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 03:54:49,521 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 03:54:49,522 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655313380]
[2023-12-23 03:54:49,522 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 03:54:49,526 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 03:54:49,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 03:54:49,544 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 03:54:49,545 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 03:54:49,547 INFO  L87              Difference]: Start difference. First operand  has 71 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand  has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-23 03:54:49,631 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 03:54:49,631 INFO  L93              Difference]: Finished difference Result 139 states and 244 transitions.
[2023-12-23 03:54:49,642 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 03:54:49,644 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 154
[2023-12-23 03:54:49,644 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 03:54:49,649 INFO  L225             Difference]: With dead ends: 139
[2023-12-23 03:54:49,649 INFO  L226             Difference]: Without dead ends: 69
[2023-12-23 03:54:49,652 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 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 03:54:49,657 INFO  L413           NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 03:54:49,658 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 03:54:49,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2023-12-23 03:54:49,690 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2023-12-23 03:54:49,691 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 03:54:49,693 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 106 transitions.
[2023-12-23 03:54:49,694 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 106 transitions. Word has length 154
[2023-12-23 03:54:49,694 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 03:54:49,694 INFO  L495      AbstractCegarLoop]: Abstraction has 69 states and 106 transitions.
[2023-12-23 03:54:49,694 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-23 03:54:49,695 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 106 transitions.
[2023-12-23 03:54:49,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2023-12-23 03:54:49,697 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 03:54:49,697 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:49,717 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 (2)] Forceful destruction successful, exit code 0
[2023-12-23 03:54:49,910 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 03:54:49,910 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 03:54:49,911 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 03:54:49,911 INFO  L85        PathProgramCache]: Analyzing trace with hash 894994249, now seen corresponding path program 1 times
[2023-12-23 03:54:49,913 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 03:54:49,913 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953265394]
[2023-12-23 03:54:49,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 03:54:49,914 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 03:54:49,914 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 03:54:49,915 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 03:54:49,917 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 03:54:50,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 03:54:50,233 INFO  L262         TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 03:54:50,240 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 03:54:50,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 689 proven. 57 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked.
[2023-12-23 03:54:50,699 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 03:54:51,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 75 proven. 60 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked.
[2023-12-23 03:54:51,033 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 03:54:51,037 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953265394]
[2023-12-23 03:54:51,037 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953265394] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 03:54:51,037 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 03:54:51,037 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13
[2023-12-23 03:54:51,037 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648880235]
[2023-12-23 03:54:51,038 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 03:54:51,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-23 03:54:51,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 03:54:51,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-23 03:54:51,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-12-23 03:54:51,041 INFO  L87              Difference]: Start difference. First operand 69 states and 106 transitions. Second operand  has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 3 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37)
[2023-12-23 03:54:51,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 03:54:51,974 INFO  L93              Difference]: Finished difference Result 173 states and 254 transitions.
[2023-12-23 03:54:51,974 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2023-12-23 03:54:51,974 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 3 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 154
[2023-12-23 03:54:51,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 03:54:51,976 INFO  L225             Difference]: With dead ends: 173
[2023-12-23 03:54:51,976 INFO  L226             Difference]: Without dead ends: 105
[2023-12-23 03:54:51,977 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 294 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552
[2023-12-23 03:54:51,978 INFO  L413           NwaCegarLoop]: 89 mSDtfsCounter, 177 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-23 03:54:51,978 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 259 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-23 03:54:51,979 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2023-12-23 03:54:51,989 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96.
[2023-12-23 03:54:51,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 58 states have internal predecessors, (71), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34)
[2023-12-23 03:54:51,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions.
[2023-12-23 03:54:51,991 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 154
[2023-12-23 03:54:51,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 03:54:51,992 INFO  L495      AbstractCegarLoop]: Abstraction has 96 states and 139 transitions.
[2023-12-23 03:54:51,995 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 3 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37)
[2023-12-23 03:54:51,995 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions.
[2023-12-23 03:54:52,001 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2023-12-23 03:54:52,001 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 03:54:52,001 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:52,028 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 03:54:52,212 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 03:54:52,213 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 03:54:52,215 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 03:54:52,215 INFO  L85        PathProgramCache]: Analyzing trace with hash -253413413, now seen corresponding path program 1 times
[2023-12-23 03:54:52,216 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 03:54:52,216 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190835492]
[2023-12-23 03:54:52,216 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 03:54:52,216 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 03:54:52,216 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 03:54:52,233 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 03:54:52,281 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 03:54:52,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 03:54:52,563 INFO  L262         TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 03:54:52,568 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 03:54:52,817 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-23 03:54:52,818 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 03:54:52,818 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 03:54:52,818 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190835492]
[2023-12-23 03:54:52,818 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190835492] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 03:54:52,818 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 03:54:52,818 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-23 03:54:52,818 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286389797]
[2023-12-23 03:54:52,819 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 03:54:52,819 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-23 03:54:52,819 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 03:54:52,820 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-23 03:54:52,820 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-12-23 03:54:52,820 INFO  L87              Difference]: Start difference. First operand 96 states and 139 transitions. Second operand  has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 03:54:54,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 03:54:54,176 INFO  L93              Difference]: Finished difference Result 333 states and 471 transitions.
[2023-12-23 03:54:54,187 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-23 03:54:54,187 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 155
[2023-12-23 03:54:54,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 03:54:54,189 INFO  L225             Difference]: With dead ends: 333
[2023-12-23 03:54:54,189 INFO  L226             Difference]: Without dead ends: 253
[2023-12-23 03:54:54,190 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156
[2023-12-23 03:54:54,191 INFO  L413           NwaCegarLoop]: 170 mSDtfsCounter, 236 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2023-12-23 03:54:54,192 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 512 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2023-12-23 03:54:54,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2023-12-23 03:54:54,237 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 144.
[2023-12-23 03:54:54,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 144 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 48 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 03:54:54,239 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 205 transitions.
[2023-12-23 03:54:54,239 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 205 transitions. Word has length 155
[2023-12-23 03:54:54,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 03:54:54,240 INFO  L495      AbstractCegarLoop]: Abstraction has 144 states and 205 transitions.
[2023-12-23 03:54:54,240 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 03:54:54,240 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 205 transitions.
[2023-12-23 03:54:54,241 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2023-12-23 03:54:54,245 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 03:54:54,245 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:54,269 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 03:54:54,455 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 03:54:54,456 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 03:54:54,456 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 03:54:54,456 INFO  L85        PathProgramCache]: Analyzing trace with hash -646440423, now seen corresponding path program 1 times
[2023-12-23 03:54:54,457 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 03:54:54,457 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729502117]
[2023-12-23 03:54:54,457 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 03:54:54,457 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 03:54:54,457 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 03:54:54,458 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 03:54:54,503 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 03:54:54,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 03:54:54,766 INFO  L262         TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 03:54:54,770 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 03:54:54,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-23 03:54:54,808 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 03:54:54,808 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 03:54:54,808 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729502117]
[2023-12-23 03:54:54,809 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729502117] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 03:54:54,809 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 03:54:54,809 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-23 03:54:54,809 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154369044]
[2023-12-23 03:54:54,809 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 03:54:54,809 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 03:54:54,810 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 03:54:54,810 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 03:54:54,810 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 03:54:54,810 INFO  L87              Difference]: Start difference. First operand 144 states and 205 transitions. Second operand  has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 03:54:55,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 03:54:55,253 INFO  L93              Difference]: Finished difference Result 224 states and 318 transitions.
[2023-12-23 03:54:55,266 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 03:54:55,266 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 155
[2023-12-23 03:54:55,267 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 03:54:55,268 INFO  L225             Difference]: With dead ends: 224
[2023-12-23 03:54:55,268 INFO  L226             Difference]: Without dead ends: 144
[2023-12-23 03:54:55,269 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 03:54:55,269 INFO  L413           NwaCegarLoop]: 93 mSDtfsCounter, 108 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 03:54:55,269 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 03:54:55,270 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2023-12-23 03:54:55,289 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144.
[2023-12-23 03:54:55,290 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 144 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 48 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 03:54:55,291 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 204 transitions.
[2023-12-23 03:54:55,291 INFO  L78                 Accepts]: Start accepts. Automaton has 144 states and 204 transitions. Word has length 155
[2023-12-23 03:54:55,291 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 03:54:55,292 INFO  L495      AbstractCegarLoop]: Abstraction has 144 states and 204 transitions.
[2023-12-23 03:54:55,292 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 03:54:55,292 INFO  L276                IsEmpty]: Start isEmpty. Operand 144 states and 204 transitions.
[2023-12-23 03:54:55,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 03:54:55,297 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 03:54:55,297 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:55,320 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 03:54:55,507 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 03:54:55,508 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 03:54:55,508 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 03:54:55,508 INFO  L85        PathProgramCache]: Analyzing trace with hash 951648838, now seen corresponding path program 1 times
[2023-12-23 03:54:55,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 03:54:55,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155397849]
[2023-12-23 03:54:55,509 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 03:54:55,509 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 03:54:55,510 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 03:54:55,526 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 03:54:55,532 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 03:54:55,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 03:54:55,841 INFO  L262         TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-23 03:54:55,845 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 03:54:56,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 417 proven. 114 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked.
[2023-12-23 03:54:56,760 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 03:54:58,864 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 03:54:58,864 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155397849]
[2023-12-23 03:54:58,864 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155397849] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 03:54:58,864 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894567334]
[2023-12-23 03:54:58,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 03:54:58,865 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 03:54:58,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 03:54:58,881 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 03:54:58,890 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2023-12-23 03:54:59,897 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 03:54:59,916 INFO  L262         TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-12-23 03:54:59,920 INFO  L285         TraceCheckSpWp]: Computing forward predicates...