/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-43.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 08:23:25,009 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 08:23:25,065 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 08:23:25,070 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 08:23:25,070 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 08:23:25,095 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 08:23:25,097 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 08:23:25,097 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 08:23:25,098 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 08:23:25,098 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 08:23:25,098 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 08:23:25,098 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 08:23:25,099 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 08:23:25,099 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 08:23:25,099 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 08:23:25,100 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 08:23:25,100 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 08:23:25,100 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 08:23:25,100 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 08:23:25,100 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 08:23:25,101 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 08:23:25,101 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 08:23:25,102 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 08:23:25,102 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 08:23:25,102 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 08:23:25,102 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 08:23:25,103 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 08:23:25,103 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 08:23:25,103 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 08:23:25,103 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 08:23:25,103 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 08:23:25,104 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 08:23:25,104 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 08:23:25,104 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 08:23:25,104 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:23:25,105 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 08:23:25,105 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 08:23:25,105 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 08:23:25,109 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 08:23:25,109 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 08:23:25,109 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 08:23:25,110 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 08:23:25,110 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 08:23:25,110 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 08:23:25,110 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 08:23:25,327 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 08:23:25,347 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 08:23:25,349 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 08:23:25,350 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 08:23:25,351 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 08:23:25,351 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i
[2024-11-06 08:23:26,754 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 08:23:27,023 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 08:23:27,024 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-43.i
[2024-11-06 08:23:27,043 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8eeb3fa5/0967c42105f04bd5ae272ef8130d1f67/FLAG0705e93f6
[2024-11-06 08:23:27,070 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8eeb3fa5/0967c42105f04bd5ae272ef8130d1f67
[2024-11-06 08:23:27,072 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 08:23:27,075 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 08:23:27,082 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 08:23:27,082 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 08:23:27,086 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 08:23:27,087 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,092 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738b50ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27, skipping insertion in model container
[2024-11-06 08:23:27,092 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,157 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 08:23:27,298 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-43.i[916,929]
[2024-11-06 08:23:27,448 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:23:27,462 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 08:23:27,471 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-43.i[916,929]
[2024-11-06 08:23:27,534 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 08:23:27,555 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 08:23:27,556 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27 WrapperNode
[2024-11-06 08:23:27,556 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 08:23:27,557 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 08:23:27,557 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 08:23:27,557 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 08:23:27,562 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,576 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,623 INFO  L138                Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 384
[2024-11-06 08:23:27,624 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 08:23:27,627 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 08:23:27,627 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 08:23:27,627 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 08:23:27,635 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,636 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,648 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,679 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 08:23:27,679 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,679 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,726 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,734 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,741 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,744 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,748 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 08:23:27,749 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 08:23:27,749 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 08:23:27,749 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 08:23:27,750 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (1/1) ...
[2024-11-06 08:23:27,754 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 08:23:27,762 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:23:27,778 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 08:23:27,793 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 08:23:27,823 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 08:23:27,824 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 08:23:27,824 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 08:23:27,824 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 08:23:27,824 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 08:23:27,824 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 08:23:27,902 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 08:23:27,904 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 08:23:48,236 INFO  L?                        ?]: Removed 41 outVars from TransFormulas that were not future-live.
[2024-11-06 08:23:48,236 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 08:23:48,254 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 08:23:48,254 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 08:23:48,254 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:23:48 BoogieIcfgContainer
[2024-11-06 08:23:48,255 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 08:23:48,258 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 08:23:48,259 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 08:23:48,261 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 08:23:48,261 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:23:27" (1/3) ...
[2024-11-06 08:23:48,262 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e17f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:23:48, skipping insertion in model container
[2024-11-06 08:23:48,262 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:23:27" (2/3) ...
[2024-11-06 08:23:48,263 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e17f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:23:48, skipping insertion in model container
[2024-11-06 08:23:48,263 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:23:48" (3/3) ...
[2024-11-06 08:23:48,265 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i
[2024-11-06 08:23:48,278 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 08:23:48,278 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 08:23:48,336 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 08:23:48,342 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;@33fdb2e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 08:23:48,345 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 08:23:48,357 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 172 states, 106 states have (on average 1.4339622641509433) internal successors, (152), 107 states have internal predecessors, (152), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63)
[2024-11-06 08:23:48,389 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-06 08:23:48,389 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:23:48,390 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:48,390 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:23:48,396 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:23:48,396 INFO  L85        PathProgramCache]: Analyzing trace with hash 221344896, now seen corresponding path program 1 times
[2024-11-06 08:23:48,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:23:48,410 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206149738]
[2024-11-06 08:23:48,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:23:48,411 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 08:23:48,411 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:23:48,417 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 08:23:48,421 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 08:23:49,455 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:23:49,516 INFO  L255         TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 08:23:49,529 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:23:49,588 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked.
[2024-11-06 08:23:49,588 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:23:49,589 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:23:49,589 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206149738]
[2024-11-06 08:23:49,590 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [206149738] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:23:49,590 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:23:49,594 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 08:23:49,596 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076980155]
[2024-11-06 08:23:49,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:23:49,600 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 08:23:49,601 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:23:49,625 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 08:23:49,626 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 08:23:49,628 INFO  L87              Difference]: Start difference. First operand  has 172 states, 106 states have (on average 1.4339622641509433) internal successors, (152), 107 states have internal predecessors, (152), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand  has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63)
[2024-11-06 08:23:49,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:23:49,664 INFO  L93              Difference]: Finished difference Result 337 states and 613 transitions.
[2024-11-06 08:23:49,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 08:23:49,666 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) Word has length 400
[2024-11-06 08:23:49,667 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:23:49,676 INFO  L225             Difference]: With dead ends: 337
[2024-11-06 08:23:49,677 INFO  L226             Difference]: Without dead ends: 168
[2024-11-06 08:23:49,683 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 399 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 08:23:49,687 INFO  L432           NwaCegarLoop]: 270 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, 270 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 08:23:49,688 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 08:23:49,703 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2024-11-06 08:23:49,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168.
[2024-11-06 08:23:49,755 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 168 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63)
[2024-11-06 08:23:49,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 270 transitions.
[2024-11-06 08:23:49,764 INFO  L78                 Accepts]: Start accepts. Automaton has 168 states and 270 transitions. Word has length 400
[2024-11-06 08:23:49,764 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:23:49,767 INFO  L471      AbstractCegarLoop]: Abstraction has 168 states and 270 transitions.
[2024-11-06 08:23:49,767 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63)
[2024-11-06 08:23:49,767 INFO  L276                IsEmpty]: Start isEmpty. Operand 168 states and 270 transitions.
[2024-11-06 08:23:49,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-06 08:23:49,775 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:23:49,777 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:49,805 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2024-11-06 08:23:49,981 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 08:23:49,983 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:23:49,983 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:23:49,983 INFO  L85        PathProgramCache]: Analyzing trace with hash 1643426678, now seen corresponding path program 1 times
[2024-11-06 08:23:49,984 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:23:49,985 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19672227]
[2024-11-06 08:23:49,985 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:23:49,985 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 08:23:49,985 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:23:49,991 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 08:23:49,993 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 08:23:50,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:23:50,984 INFO  L255         TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-06 08:23:50,993 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:24:00,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked.
[2024-11-06 08:24:00,741 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 08:24:00,742 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:24:00,742 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19672227]
[2024-11-06 08:24:00,742 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [19672227] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 08:24:00,742 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 08:24:00,742 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-06 08:24:00,742 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013409799]
[2024-11-06 08:24:00,743 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 08:24:00,748 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-06 08:24:00,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:24:00,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-06 08:24:00,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 08:24:00,751 INFO  L87              Difference]: Start difference. First operand 168 states and 270 transitions. Second operand  has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63)
[2024-11-06 08:24:05,611 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:24:10,183 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:24:14,191 WARN  L539   Checker$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 08:24:18,714 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:24:22,724 WARN  L539   Checker$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 08:24:22,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:24:22,725 INFO  L93              Difference]: Finished difference Result 554 states and 895 transitions.
[2024-11-06 08:24:22,827 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-06 08:24:22,827 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 400
[2024-11-06 08:24:22,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:24:22,833 INFO  L225             Difference]: With dead ends: 554
[2024-11-06 08:24:22,833 INFO  L226             Difference]: Without dead ends: 389
[2024-11-06 08:24:22,834 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-11-06 08:24:22,835 INFO  L432           NwaCegarLoop]: 266 mSDtfsCounter, 329 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 127 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time
[2024-11-06 08:24:22,835 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 791 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 21.8s Time]
[2024-11-06 08:24:22,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 389 states.
[2024-11-06 08:24:22,874 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 331.
[2024-11-06 08:24:22,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 331 states, 202 states have (on average 1.400990099009901) internal successors, (283), 202 states have internal predecessors, (283), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-06 08:24:22,877 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 535 transitions.
[2024-11-06 08:24:22,878 INFO  L78                 Accepts]: Start accepts. Automaton has 331 states and 535 transitions. Word has length 400
[2024-11-06 08:24:22,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:24:22,879 INFO  L471      AbstractCegarLoop]: Abstraction has 331 states and 535 transitions.
[2024-11-06 08:24:22,882 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63)
[2024-11-06 08:24:22,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 331 states and 535 transitions.
[2024-11-06 08:24:22,888 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-06 08:24:22,888 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:24:22,888 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:22,917 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 08:24:23,089 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 08:24:23,090 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:24:23,090 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:24:23,091 INFO  L85        PathProgramCache]: Analyzing trace with hash 746033400, now seen corresponding path program 1 times
[2024-11-06 08:24:23,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:24:23,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038670742]
[2024-11-06 08:24:23,092 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:24:23,092 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 08:24:23,092 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:24:23,094 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 08:24:23,095 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 08:24:23,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:24:24,015 INFO  L255         TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-06 08:24:24,021 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:24:32,541 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 1988 proven. 159 refuted. 0 times theorem prover too weak. 5665 trivial. 0 not checked.
[2024-11-06 08:24:32,541 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:24:39,591 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked.
[2024-11-06 08:24:39,591 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:24:39,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038670742]
[2024-11-06 08:24:39,591 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038670742] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 08:24:39,592 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 08:24:39,592 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2024-11-06 08:24:39,592 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697300362]
[2024-11-06 08:24:39,592 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 08:24:39,597 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-06 08:24:39,598 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 08:24:39,598 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-06 08:24:39,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-06 08:24:39,599 INFO  L87              Difference]: Start difference. First operand 331 states and 535 transitions. Second operand  has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117)
[2024-11-06 08:24:49,463 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 08:24:53,468 WARN  L539   Checker$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 08:24:57,470 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 08:24:57,483 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 08:24:57,483 INFO  L93              Difference]: Finished difference Result 675 states and 1081 transitions.
[2024-11-06 08:24:57,591 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-06 08:24:57,592 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 400
[2024-11-06 08:24:57,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 08:24:57,603 INFO  L225             Difference]: With dead ends: 675
[2024-11-06 08:24:57,604 INFO  L226             Difference]: Without dead ends: 347
[2024-11-06 08:24:57,606 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 792 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2024-11-06 08:24:57,608 INFO  L432           NwaCegarLoop]: 198 mSDtfsCounter, 200 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time
[2024-11-06 08:24:57,608 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 467 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 326 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time]
[2024-11-06 08:24:57,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 347 states.
[2024-11-06 08:24:57,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339.
[2024-11-06 08:24:57,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 339 states, 208 states have (on average 1.3701923076923077) internal successors, (285), 208 states have internal predecessors, (285), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126)
[2024-11-06 08:24:57,671 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 537 transitions.
[2024-11-06 08:24:57,672 INFO  L78                 Accepts]: Start accepts. Automaton has 339 states and 537 transitions. Word has length 400
[2024-11-06 08:24:57,672 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 08:24:57,672 INFO  L471      AbstractCegarLoop]: Abstraction has 339 states and 537 transitions.
[2024-11-06 08:24:57,673 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117)
[2024-11-06 08:24:57,673 INFO  L276                IsEmpty]: Start isEmpty. Operand 339 states and 537 transitions.
[2024-11-06 08:24:57,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 401
[2024-11-06 08:24:57,677 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 08:24:57,677 INFO  L215           NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:57,707 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 (4)] Ended with exit code 0
[2024-11-06 08:24:57,880 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
[2024-11-06 08:24:57,881 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 08:24:57,882 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 08:24:57,882 INFO  L85        PathProgramCache]: Analyzing trace with hash 673646842, now seen corresponding path program 1 times
[2024-11-06 08:24:57,882 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 08:24:57,883 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242491500]
[2024-11-06 08:24:57,883 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:24:57,883 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 08:24:57,883 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 08:24:57,887 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)
[2024-11-06 08:24:57,888 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
[2024-11-06 08:24:58,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:24:58,837 INFO  L255         TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-06 08:24:58,846 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 08:25:09,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked.
[2024-11-06 08:25:09,742 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 08:25:13,187 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 08:25:13,187 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242491500]
[2024-11-06 08:25:13,188 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [242491500] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 08:25:13,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383591354]
[2024-11-06 08:25:13,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 08:25:13,188 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 08:25:13,188 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 08:25:13,190 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 08:25:13,192 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-06 08:25:13,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 08:25:13,829 INFO  L255         TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-06 08:25:13,835 INFO  L278         TraceCheckSpWp]: Computing forward predicates...