/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 --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 08:24:16,237 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 08:24:16,320 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 08:24:16,326 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 08:24:16,327 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 08:24:16,351 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 08:24:16,352 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 08:24:16,352 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 08:24:16,353 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 08:24:16,353 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 08:24:16,353 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 08:24:16,354 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 08:24:16,354 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 08:24:16,355 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 08:24:16,355 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 08:24:16,356 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 08:24:16,356 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 08:24:16,356 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 08:24:16,356 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 08:24:16,357 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 08:24:16,357 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 08:24:16,361 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 08:24:16,362 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 08:24:16,362 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 08:24:16,362 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 08:24:16,363 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 08:24:16,363 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 08:24:16,363 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 08:24:16,363 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 08:24:16,364 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 08:24:16,364 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 08:24:16,364 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 08:24:16,364 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 08:24:16,365 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 08:24:16,365 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:24:16,365 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 08:24:16,365 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 08:24:16,366 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 08:24:16,366 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 08:24:16,366 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 08:24:16,367 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 08:24:16,367 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 08:24:16,368 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 08:24:16,368 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 08:24:16,368 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 08:24:16,616 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 08:24:16,643 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 08:24:16,647 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 08:24:16,648 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 08:24:16,648 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 08:24:16,649 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i
[2024-11-06 08:24:18,178 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 08:24:18,434 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 08:24:18,435 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i
[2024-11-06 08:24:18,458 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07af133af/5180c2becb9945d68435faa4c3d7dcd9/FLAG4e23da7c2
[2024-11-06 08:24:18,758 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07af133af/5180c2becb9945d68435faa4c3d7dcd9
[2024-11-06 08:24:18,760 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 08:24:18,761 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 08:24:18,762 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 08:24:18,762 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 08:24:18,768 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 08:24:18,769 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:24:18" (1/1) ...
[2024-11-06 08:24:18,770 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be23536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:18, skipping insertion in model container
[2024-11-06 08:24:18,770 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:24:18" (1/1) ...
[2024-11-06 08:24:18,810 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 08:24:18,991 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i[916,929]
[2024-11-06 08:24:19,135 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:24:19,155 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 08:24:19,167 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-48.i[916,929]
[2024-11-06 08:24:19,229 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:24:19,255 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 08:24:19,256 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19 WrapperNode
[2024-11-06 08:24:19,256 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 08:24:19,257 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 08:24:19,257 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 08:24:19,257 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 08:24:19,266 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,288 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,327 INFO  L138                Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 335
[2024-11-06 08:24:19,327 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 08:24:19,328 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 08:24:19,328 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 08:24:19,328 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 08:24:19,342 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,342 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,356 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,389 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].
[2024-11-06 08:24:19,390 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,390 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,423 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,431 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,436 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,440 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,447 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 08:24:19,449 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 08:24:19,449 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 08:24:19,449 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 08:24:19,450 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (1/1) ...
[2024-11-06 08:24:19,455 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:24:19,472 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:24:19,489 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)
[2024-11-06 08:24:19,492 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
[2024-11-06 08:24:19,520 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 08:24:19,521 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 08:24:19,521 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 08:24:19,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 08:24:19,521 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 08:24:19,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 08:24:19,650 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 08:24:19,652 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 08:24:42,126 INFO  L?                        ?]: Removed 54 outVars from TransFormulas that were not future-live.
[2024-11-06 08:24:42,127 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 08:24:42,147 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 08:24:42,148 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 08:24:42,148 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:24:42 BoogieIcfgContainer
[2024-11-06 08:24:42,148 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 08:24:42,150 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 08:24:42,150 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 08:24:42,154 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 08:24:42,154 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:24:18" (1/3) ...
[2024-11-06 08:24:42,155 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7356ad8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:24:42, skipping insertion in model container
[2024-11-06 08:24:42,155 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:24:19" (2/3) ...
[2024-11-06 08:24:42,155 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7356ad8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:24:42, skipping insertion in model container
[2024-11-06 08:24:42,156 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:24:42" (3/3) ...
[2024-11-06 08:24:42,157 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-48.i
[2024-11-06 08:24:42,173 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 08:24:42,173 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 08:24:42,224 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 08:24:42,230 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;@740f84d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 08:24:42,230 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 08:24:42,237 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 137 states, 93 states have (on average 1.4838709677419355) internal successors, (138), 94 states have internal predecessors, (138), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41)
[2024-11-06 08:24:42,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2024-11-06 08:24:42,252 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:24:42,252 INFO  L215           NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:24:42,253 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:24:42,257 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:24:42,257 INFO  L85        PathProgramCache]: Analyzing trace with hash 880307293, now seen corresponding path program 1 times
[2024-11-06 08:24:42,271 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:24:42,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681461156]
[2024-11-06 08:24:42,271 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:24:42,272 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
[2024-11-06 08:24:42,272 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:24:42,273 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)
[2024-11-06 08:24:42,275 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
[2024-11-06 08:24:43,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:24:43,472 INFO  L255         TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 08:24:43,485 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:24:43,549 INFO  L134       CoverageAnalysis]: Checked inductivity of 3280 backedges. 1424 proven. 0 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked.
[2024-11-06 08:24:43,549 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:24:43,550 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:24:43,551 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681461156]
[2024-11-06 08:24:43,555 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681461156] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:24:43,556 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:24:43,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 08:24:43,558 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473842427]
[2024-11-06 08:24:43,559 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:24:43,567 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 08:24:43,568 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:24:43,594 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 08:24:43,595 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:24:43,599 INFO  L87              Difference]: Start difference. First operand  has 137 states, 93 states have (on average 1.4838709677419355) internal successors, (138), 94 states have internal predecessors, (138), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand  has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)
[2024-11-06 08:24:43,654 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:24:43,654 INFO  L93              Difference]: Finished difference Result 267 states and 475 transitions.
[2024-11-06 08:24:43,655 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 08:24:43,657 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 271
[2024-11-06 08:24:43,657 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:24:43,664 INFO  L225             Difference]: With dead ends: 267
[2024-11-06 08:24:43,664 INFO  L226             Difference]: Without dead ends: 133
[2024-11-06 08:24:43,668 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:24:43,671 INFO  L432           NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 08:24:43,672 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 08:24:43,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2024-11-06 08:24:43,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133.
[2024-11-06 08:24:43,726 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 133 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 90 states have internal predecessors, (131), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41)
[2024-11-06 08:24:43,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 213 transitions.
[2024-11-06 08:24:43,732 INFO  L78                 Accepts]: Start accepts. Automaton has 133 states and 213 transitions. Word has length 271
[2024-11-06 08:24:43,733 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:24:43,733 INFO  L471      AbstractCegarLoop]: Abstraction has 133 states and 213 transitions.
[2024-11-06 08:24:43,733 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)
[2024-11-06 08:24:43,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states and 213 transitions.
[2024-11-06 08:24:43,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2024-11-06 08:24:43,745 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:24:43,745 INFO  L215           NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:24:43,796 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
[2024-11-06 08:24:43,949 WARN  L453      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
[2024-11-06 08:24:43,950 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:24:43,951 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:24:43,951 INFO  L85        PathProgramCache]: Analyzing trace with hash 1415013479, now seen corresponding path program 1 times
[2024-11-06 08:24:43,953 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:24:43,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456768861]
[2024-11-06 08:24:43,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:24:43,959 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
[2024-11-06 08:24:43,960 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:24:43,965 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)
[2024-11-06 08:24:43,973 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
[2024-11-06 08:24:45,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:24:45,307 INFO  L255         TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-06 08:24:45,322 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:24:53,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked.
[2024-11-06 08:24:53,414 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:24:53,415 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:24:53,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456768861]
[2024-11-06 08:24:53,415 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456768861] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:24:53,415 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:24:53,416 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-06 08:24:53,416 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360359700]
[2024-11-06 08:24:53,416 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:24:53,418 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-06 08:24:53,418 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:24:53,419 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-06 08:24:53,420 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-06 08:24:53,420 INFO  L87              Difference]: Start difference. First operand 133 states and 213 transitions. Second operand  has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41)
[2024-11-06 08:24:57,398 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:02,230 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:06,244 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:10,251 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:14,256 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:14,426 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:25:14,426 INFO  L93              Difference]: Finished difference Result 387 states and 621 transitions.
[2024-11-06 08:25:14,427 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-06 08:25:14,427 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 271
[2024-11-06 08:25:14,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:25:14,432 INFO  L225             Difference]: With dead ends: 387
[2024-11-06 08:25:14,432 INFO  L226             Difference]: Without dead ends: 257
[2024-11-06 08:25:14,434 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-06 08:25:14,435 INFO  L432           NwaCegarLoop]: 201 mSDtfsCounter, 61 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time
[2024-11-06 08:25:14,435 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 494 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 4 Unknown, 0 Unchecked, 20.9s Time]
[2024-11-06 08:25:14,439 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 257 states.
[2024-11-06 08:25:14,494 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254.
[2024-11-06 08:25:14,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 254 states, 169 states have (on average 1.4201183431952662) internal successors, (240), 169 states have internal predecessors, (240), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82)
[2024-11-06 08:25:14,499 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 404 transitions.
[2024-11-06 08:25:14,502 INFO  L78                 Accepts]: Start accepts. Automaton has 254 states and 404 transitions. Word has length 271
[2024-11-06 08:25:14,503 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:25:14,503 INFO  L471      AbstractCegarLoop]: Abstraction has 254 states and 404 transitions.
[2024-11-06 08:25:14,503 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41)
[2024-11-06 08:25:14,503 INFO  L276                IsEmpty]: Start isEmpty. Operand 254 states and 404 transitions.
[2024-11-06 08:25:14,510 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2024-11-06 08:25:14,511 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:25:14,511 INFO  L215           NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:25:14,564 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2024-11-06 08:25:14,711 WARN  L453      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
[2024-11-06 08:25:14,712 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:25:14,713 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:25:14,713 INFO  L85        PathProgramCache]: Analyzing trace with hash -104025319, now seen corresponding path program 1 times
[2024-11-06 08:25:14,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:25:14,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47029443]
[2024-11-06 08:25:14,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:25:14,714 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
[2024-11-06 08:25:14,714 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:25:14,716 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)
[2024-11-06 08:25:14,717 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
[2024-11-06 08:25:15,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:25:15,926 INFO  L255         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-06 08:25:15,933 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:25:20,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 3280 backedges. 1624 proven. 48 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked.
[2024-11-06 08:25:20,508 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:25:23,477 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:25:23,478 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47029443]
[2024-11-06 08:25:23,478 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [47029443] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 08:25:23,478 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628181775]
[2024-11-06 08:25:23,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:25:23,479 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:25:23,479 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:25:23,481 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)
[2024-11-06 08:25:23,483 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-06 08:25:24,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:25:24,333 INFO  L255         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-06 08:25:24,339 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:25:28,620 INFO  L134       CoverageAnalysis]: Checked inductivity of 3280 backedges. 1624 proven. 48 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked.
[2024-11-06 08:25:28,620 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:25:30,164 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628181775] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 08:25:30,164 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 08:25:30,164 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2024-11-06 08:25:30,165 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686436118]
[2024-11-06 08:25:30,165 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 08:25:30,166 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-06 08:25:30,166 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:25:30,167 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-06 08:25:30,167 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2024-11-06 08:25:30,169 INFO  L87              Difference]: Start difference. First operand 254 states and 404 transitions. Second operand  has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)
[2024-11-06 08:25:40,431 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:44,437 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:48,445 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:52,447 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:25:52,455 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:25:52,456 INFO  L93              Difference]: Finished difference Result 515 states and 811 transitions.
[2024-11-06 08:25:52,629 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-06 08:25:52,630 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 271
[2024-11-06 08:25:52,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:25:52,634 INFO  L225             Difference]: With dead ends: 515
[2024-11-06 08:25:52,635 INFO  L226             Difference]: Without dead ends: 264
[2024-11-06 08:25:52,636 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2024-11-06 08:25:52,637 INFO  L432           NwaCegarLoop]: 159 mSDtfsCounter, 108 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time
[2024-11-06 08:25:52,638 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 553 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 4 Unknown, 0 Unchecked, 21.6s Time]
[2024-11-06 08:25:52,642 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2024-11-06 08:25:52,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260.
[2024-11-06 08:25:52,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 260 states, 173 states have (on average 1.3872832369942196) internal successors, (240), 173 states have internal predecessors, (240), 82 states have call successors, (82), 4 states have call predecessors, (82), 4 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82)
[2024-11-06 08:25:52,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 404 transitions.
[2024-11-06 08:25:52,692 INFO  L78                 Accepts]: Start accepts. Automaton has 260 states and 404 transitions. Word has length 271
[2024-11-06 08:25:52,693 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:25:52,693 INFO  L471      AbstractCegarLoop]: Abstraction has 260 states and 404 transitions.
[2024-11-06 08:25:52,694 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (41), 2 states have call predecessors, (41), 3 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)
[2024-11-06 08:25:52,694 INFO  L276                IsEmpty]: Start isEmpty. Operand 260 states and 404 transitions.
[2024-11-06 08:25:52,699 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2024-11-06 08:25:52,700 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:25:52,700 INFO  L215           NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 08:25:52,750 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
[2024-11-06 08:25:52,987 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-11-06 08:25:53,104 WARN  L453      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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:25:53,105 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:25:53,106 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:25:53,106 INFO  L85        PathProgramCache]: Analyzing trace with hash -338599653, now seen corresponding path program 1 times
[2024-11-06 08:25:53,106 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:25:53,107 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373796229]
[2024-11-06 08:25:53,107 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:25:53,107 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
[2024-11-06 08:25:53,107 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:25:53,108 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)
[2024-11-06 08:25:53,110 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
[2024-11-06 08:25:54,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:25:54,302 INFO  L255         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-06 08:25:54,308 INFO  L278         TraceCheckSpWp]: Computing forward predicates...