/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-53.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 13:14:39,352 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 13:14:39,403 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-23 13:14:39,407 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 13:14:39,408 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 13:14:39,427 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 13:14:39,428 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 13:14:39,428 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 13:14:39,428 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 13:14:39,429 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 13:14:39,429 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 13:14:39,429 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 13:14:39,429 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 13:14:39,430 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 13:14:39,430 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 13:14:39,430 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 13:14:39,430 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 13:14:39,431 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 13:14:39,431 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 13:14:39,431 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 13:14:39,431 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 13:14:39,434 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 13:14:39,434 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 13:14:39,434 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 13:14:39,437 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 13:14:39,437 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 13:14:39,438 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 13:14:39,438 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 13:14:39,439 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 13:14:39,439 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 13:14:39,439 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 13:14:39,440 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 13:14:39,440 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 13:14:39,441 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 13:14:39,442 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 13:14:39,631 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 13:14:39,664 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 13:14:39,665 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 13:14:39,666 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 13:14:39,668 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 13:14:39,669 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-53.i
[2023-12-23 13:14:40,858 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 13:14:41,027 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 13:14:41,028 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-53.i
[2023-12-23 13:14:41,045 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab15624ee/d512a280293b43338e6e75999fa0633d/FLAG8eae69322
[2023-12-23 13:14:41,055 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab15624ee/d512a280293b43338e6e75999fa0633d
[2023-12-23 13:14:41,057 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 13:14:41,058 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 13:14:41,059 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 13:14:41,059 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 13:14:41,065 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 13:14:41,065 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,066 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1998b10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41, skipping insertion in model container
[2023-12-23 13:14:41,066 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,110 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 13:14:41,259 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-53.i[919,932]
[2023-12-23 13:14:41,354 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 13:14:41,372 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 13:14:41,381 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-53.i[919,932]
[2023-12-23 13:14:41,420 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 13:14:41,438 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 13:14:41,438 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41 WrapperNode
[2023-12-23 13:14:41,438 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 13:14:41,439 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 13:14:41,439 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 13:14:41,439 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 13:14:41,447 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,460 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,483 INFO  L138                Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 211
[2023-12-23 13:14:41,483 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 13:14:41,484 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 13:14:41,484 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 13:14:41,484 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 13:14:41,492 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,493 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,496 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,508 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-23 13:14:41,508 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,517 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,540 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,544 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,546 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,547 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,550 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 13:14:41,551 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 13:14:41,551 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 13:14:41,551 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 13:14:41,568 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (1/1) ...
[2023-12-23 13:14:41,573 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 13:14:41,586 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 13:14:41,600 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-23 13:14:41,623 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-23 13:14:41,629 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 13:14:41,630 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 13:14:41,630 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 13:14:41,631 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 13:14:41,631 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 13:14:41,631 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 13:14:41,707 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 13:14:41,709 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 13:14:42,743 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 13:14:42,861 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 13:14:42,861 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 13:14:42,862 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:14:42 BoogieIcfgContainer
[2023-12-23 13:14:42,862 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 13:14:42,863 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 13:14:42,864 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 13:14:42,871 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 13:14:42,871 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:14:41" (1/3) ...
[2023-12-23 13:14:42,872 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d46f174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:14:42, skipping insertion in model container
[2023-12-23 13:14:42,872 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:14:41" (2/3) ...
[2023-12-23 13:14:42,873 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d46f174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:14:42, skipping insertion in model container
[2023-12-23 13:14:42,873 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:14:42" (3/3) ...
[2023-12-23 13:14:42,884 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-53.i
[2023-12-23 13:14:42,912 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 13:14:42,912 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 13:14:42,956 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 13:14:42,967 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@534c9114, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 13:14:42,967 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 13:14:42,971 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 87 states, 53 states have (on average 1.490566037735849) internal successors, (79), 54 states have internal predecessors, (79), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2023-12-23 13:14:43,017 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2023-12-23 13:14:43,018 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 13:14:43,019 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 13:14:43,019 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 13:14:43,024 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 13:14:43,024 INFO  L85        PathProgramCache]: Analyzing trace with hash 592280228, now seen corresponding path program 1 times
[2023-12-23 13:14:43,052 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 13:14:43,052 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305260226]
[2023-12-23 13:14:43,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:43,053 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:43,053 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 13:14:43,055 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 13:14:43,097 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-23 13:14:43,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:14:43,495 INFO  L262         TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 13:14:43,502 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:14:43,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 896 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked.
[2023-12-23 13:14:43,555 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 13:14:43,555 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 13:14:43,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305260226]
[2023-12-23 13:14:43,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305260226] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 13:14:43,556 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 13:14:43,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 13:14:43,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277777148]
[2023-12-23 13:14:43,558 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 13:14:43,561 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 13:14:43,561 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 13:14:43,580 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 13:14:43,581 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 13:14:43,582 INFO  L87              Difference]: Start difference. First operand  has 87 states, 53 states have (on average 1.490566037735849) internal successors, (79), 54 states have internal predecessors, (79), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand  has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2023-12-23 13:14:43,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 13:14:43,751 INFO  L93              Difference]: Finished difference Result 171 states and 311 transitions.
[2023-12-23 13:14:43,763 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 13:14:43,764 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 195
[2023-12-23 13:14:43,764 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 13:14:43,769 INFO  L225             Difference]: With dead ends: 171
[2023-12-23 13:14:43,770 INFO  L226             Difference]: Without dead ends: 85
[2023-12-23 13:14:43,772 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 13:14:43,774 INFO  L413           NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 13:14:43,775 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 13:14:43,787 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-12-23 13:14:43,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2023-12-23 13:14:43,805 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2023-12-23 13:14:43,806 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions.
[2023-12-23 13:14:43,807 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 195
[2023-12-23 13:14:43,807 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 13:14:43,807 INFO  L495      AbstractCegarLoop]: Abstraction has 85 states and 135 transitions.
[2023-12-23 13:14:43,808 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2023-12-23 13:14:43,808 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions.
[2023-12-23 13:14:43,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2023-12-23 13:14:43,810 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 13:14:43,811 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 13:14:43,821 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-23 13:14:44,021 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:44,022 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 13:14:44,023 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 13:14:44,023 INFO  L85        PathProgramCache]: Analyzing trace with hash 1014957776, now seen corresponding path program 1 times
[2023-12-23 13:14:44,028 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 13:14:44,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731249400]
[2023-12-23 13:14:44,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:44,029 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:44,029 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 13:14:44,032 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 13:14:44,033 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-23 13:14:44,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:14:44,454 INFO  L262         TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 13:14:44,460 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:14:44,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked.
[2023-12-23 13:14:44,735 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 13:14:44,735 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 13:14:44,736 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731249400]
[2023-12-23 13:14:44,736 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [731249400] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 13:14:44,736 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 13:14:44,736 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 13:14:44,736 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608634463]
[2023-12-23 13:14:44,736 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 13:14:44,737 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 13:14:44,738 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 13:14:44,738 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 13:14:44,738 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 13:14:44,739 INFO  L87              Difference]: Start difference. First operand 85 states and 135 transitions. Second operand  has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 13:14:45,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 13:14:45,090 INFO  L93              Difference]: Finished difference Result 249 states and 395 transitions.
[2023-12-23 13:14:45,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 13:14:45,094 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196
[2023-12-23 13:14:45,095 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 13:14:45,096 INFO  L225             Difference]: With dead ends: 249
[2023-12-23 13:14:45,097 INFO  L226             Difference]: Without dead ends: 165
[2023-12-23 13:14:45,097 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 13:14:45,098 INFO  L413           NwaCegarLoop]: 126 mSDtfsCounter, 27 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-23 13:14:45,099 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 243 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-23 13:14:45,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165 states.
[2023-12-23 13:14:45,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163.
[2023-12-23 13:14:45,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163 states, 98 states have (on average 1.346938775510204) internal successors, (132), 98 states have internal predecessors, (132), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62)
[2023-12-23 13:14:45,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 256 transitions.
[2023-12-23 13:14:45,138 INFO  L78                 Accepts]: Start accepts. Automaton has 163 states and 256 transitions. Word has length 196
[2023-12-23 13:14:45,140 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 13:14:45,140 INFO  L495      AbstractCegarLoop]: Abstraction has 163 states and 256 transitions.
[2023-12-23 13:14:45,140 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 13:14:45,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 163 states and 256 transitions.
[2023-12-23 13:14:45,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2023-12-23 13:14:45,146 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 13:14:45,146 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 13:14:45,173 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-23 13:14:45,346 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:45,348 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 13:14:45,348 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 13:14:45,348 INFO  L85        PathProgramCache]: Analyzing trace with hash 893662690, now seen corresponding path program 1 times
[2023-12-23 13:14:45,349 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 13:14:45,349 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983941857]
[2023-12-23 13:14:45,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:45,349 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:45,349 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 13:14:45,353 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 13:14:45,354 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-12-23 13:14:45,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:14:45,715 INFO  L262         TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 13:14:45,720 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:14:45,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked.
[2023-12-23 13:14:45,751 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 13:14:45,752 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 13:14:45,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983941857]
[2023-12-23 13:14:45,752 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [983941857] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 13:14:45,752 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 13:14:45,752 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 13:14:45,752 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145788610]
[2023-12-23 13:14:45,752 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 13:14:45,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 13:14:45,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 13:14:45,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 13:14:45,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 13:14:45,754 INFO  L87              Difference]: Start difference. First operand 163 states and 256 transitions. Second operand  has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 13:14:46,549 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 13:14:46,550 INFO  L93              Difference]: Finished difference Result 424 states and 666 transitions.
[2023-12-23 13:14:46,550 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 13:14:46,550 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197
[2023-12-23 13:14:46,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 13:14:46,553 INFO  L225             Difference]: With dead ends: 424
[2023-12-23 13:14:46,553 INFO  L226             Difference]: Without dead ends: 262
[2023-12-23 13:14:46,554 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 13:14:46,555 INFO  L413           NwaCegarLoop]: 244 mSDtfsCounter, 127 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-23 13:14:46,555 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 361 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-23 13:14:46,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 262 states.
[2023-12-23 13:14:46,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 166.
[2023-12-23 13:14:46,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 166 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 101 states have internal predecessors, (136), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62)
[2023-12-23 13:14:46,573 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 260 transitions.
[2023-12-23 13:14:46,573 INFO  L78                 Accepts]: Start accepts. Automaton has 166 states and 260 transitions. Word has length 197
[2023-12-23 13:14:46,573 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 13:14:46,573 INFO  L495      AbstractCegarLoop]: Abstraction has 166 states and 260 transitions.
[2023-12-23 13:14:46,574 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 13:14:46,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 166 states and 260 transitions.
[2023-12-23 13:14:46,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2023-12-23 13:14:46,575 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 13:14:46,575 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 13:14:46,592 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-12-23 13:14:46,787 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:46,787 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 13:14:46,788 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 13:14:46,788 INFO  L85        PathProgramCache]: Analyzing trace with hash 84316064, now seen corresponding path program 1 times
[2023-12-23 13:14:46,789 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 13:14:46,789 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34384993]
[2023-12-23 13:14:46,789 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:46,789 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:46,789 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 13:14:46,791 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 13:14:46,794 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 13:14:47,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:14:47,188 INFO  L262         TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-23 13:14:47,193 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:14:48,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 904 proven. 33 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked.
[2023-12-23 13:14:48,676 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 13:14:50,972 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 13:14:50,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34384993]
[2023-12-23 13:14:50,973 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [34384993] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 13:14:50,973 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [316284620]
[2023-12-23 13:14:50,973 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:50,973 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 13:14:50,974 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 13:14:50,975 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 13:14:51,017 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2023-12-23 13:14:51,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:14:51,978 INFO  L262         TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 13:14:51,982 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:14:52,546 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked.
[2023-12-23 13:14:52,546 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 13:14:52,546 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [316284620] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 13:14:52,547 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 13:14:52,547 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15
[2023-12-23 13:14:52,547 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685421458]
[2023-12-23 13:14:52,547 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 13:14:52,547 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-23 13:14:52,547 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 13:14:52,548 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-23 13:14:52,548 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420
[2023-12-23 13:14:52,549 INFO  L87              Difference]: Start difference. First operand 166 states and 260 transitions. Second operand  has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 13:14:54,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 13:14:54,647 INFO  L93              Difference]: Finished difference Result 573 states and 879 transitions.
[2023-12-23 13:14:54,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-23 13:14:54,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197
[2023-12-23 13:14:54,648 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 13:14:54,650 INFO  L225             Difference]: With dead ends: 573
[2023-12-23 13:14:54,650 INFO  L226             Difference]: Without dead ends: 408
[2023-12-23 13:14:54,651 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650
[2023-12-23 13:14:54,652 INFO  L413           NwaCegarLoop]: 326 mSDtfsCounter, 354 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time
[2023-12-23 13:14:54,652 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1104 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time]
[2023-12-23 13:14:54,653 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 408 states.
[2023-12-23 13:14:54,676 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 226.
[2023-12-23 13:14:54,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 226 states, 127 states have (on average 1.2755905511811023) internal successors, (162), 128 states have internal predecessors, (162), 93 states have call successors, (93), 5 states have call predecessors, (93), 5 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93)
[2023-12-23 13:14:54,678 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 348 transitions.
[2023-12-23 13:14:54,678 INFO  L78                 Accepts]: Start accepts. Automaton has 226 states and 348 transitions. Word has length 197
[2023-12-23 13:14:54,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 13:14:54,679 INFO  L495      AbstractCegarLoop]: Abstraction has 226 states and 348 transitions.
[2023-12-23 13:14:54,679 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 13:14:54,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 226 states and 348 transitions.
[2023-12-23 13:14:54,680 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2023-12-23 13:14:54,680 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 13:14:54,680 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 13:14:54,692 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-23 13:14:54,900 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0
[2023-12-23 13:14:55,092 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-23 13:14:55,093 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 13:14:55,093 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 13:14:55,093 INFO  L85        PathProgramCache]: Analyzing trace with hash 1859323426, now seen corresponding path program 1 times
[2023-12-23 13:14:55,094 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 13:14:55,094 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792002585]
[2023-12-23 13:14:55,094 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:55,094 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:14:55,094 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 13:14:55,095 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 13:14:55,104 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-12-23 13:14:55,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:14:55,474 INFO  L262         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-23 13:14:55,479 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:14:56,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 904 proven. 33 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked.
[2023-12-23 13:14:56,790 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 13:14:59,328 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 13:14:59,328 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792002585]
[2023-12-23 13:14:59,328 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792002585] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 13:14:59,328 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175677494]
[2023-12-23 13:14:59,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:14:59,329 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 13:14:59,329 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 13:14:59,330 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 13:14:59,346 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process
[2023-12-23 13:15:00,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:15:00,468 INFO  L262         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 13:15:00,472 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 13:15:01,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 960 proven. 45 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked.
[2023-12-23 13:15:01,115 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 13:15:01,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked.
[2023-12-23 13:15:01,574 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175677494] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 13:15:01,574 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-12-23 13:15:01,574 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20
[2023-12-23 13:15:01,574 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479225251]
[2023-12-23 13:15:01,574 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-12-23 13:15:01,575 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2023-12-23 13:15:01,575 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 13:15:01,576 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2023-12-23 13:15:01,576 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506
[2023-12-23 13:15:01,577 INFO  L87              Difference]: Start difference. First operand 226 states and 348 transitions. Second operand  has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 4 states have call successors, (77), 4 states have call predecessors, (77), 7 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78)
[2023-12-23 13:15:26,366 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 13:15:26,366 INFO  L93              Difference]: Finished difference Result 856 states and 1271 transitions.
[2023-12-23 13:15:26,367 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2023-12-23 13:15:26,367 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 4 states have call successors, (77), 4 states have call predecessors, (77), 7 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78) Word has length 197
[2023-12-23 13:15:26,368 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 13:15:26,370 INFO  L225             Difference]: With dead ends: 856
[2023-12-23 13:15:26,370 INFO  L226             Difference]: Without dead ends: 683
[2023-12-23 13:15:26,372 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 596 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=837, Invalid=3453, Unknown=0, NotChecked=0, Total=4290
[2023-12-23 13:15:26,373 INFO  L413           NwaCegarLoop]: 176 mSDtfsCounter, 813 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 726 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time
[2023-12-23 13:15:26,373 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1142 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 1328 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time]
[2023-12-23 13:15:26,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 683 states.
[2023-12-23 13:15:26,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 239.
[2023-12-23 13:15:26,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 239 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 137 states have internal predecessors, (169), 93 states have call successors, (93), 9 states have call predecessors, (93), 9 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93)
[2023-12-23 13:15:26,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 355 transitions.
[2023-12-23 13:15:26,412 INFO  L78                 Accepts]: Start accepts. Automaton has 239 states and 355 transitions. Word has length 197
[2023-12-23 13:15:26,413 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 13:15:26,413 INFO  L495      AbstractCegarLoop]: Abstraction has 239 states and 355 transitions.
[2023-12-23 13:15:26,413 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 4 states have call successors, (77), 4 states have call predecessors, (77), 7 states have return successors, (78), 4 states have call predecessors, (78), 4 states have call successors, (78)
[2023-12-23 13:15:26,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 239 states and 355 transitions.
[2023-12-23 13:15:26,415 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 199
[2023-12-23 13:15:26,415 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 13:15:26,415 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 13:15:26,427 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 (7)] Ended with exit code 0
[2023-12-23 13:15:26,635 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0
[2023-12-23 13:15:26,828 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-23 13:15:26,829 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 13:15:26,829 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 13:15:26,829 INFO  L85        PathProgramCache]: Analyzing trace with hash 1693503206, now seen corresponding path program 1 times
[2023-12-23 13:15:26,830 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 13:15:26,830 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476980150]
[2023-12-23 13:15:26,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 13:15:26,830 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 13:15:26,830 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 13:15:26,831 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 13:15:26,842 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 (9)] Waiting until timeout for monitored process
[2023-12-23 13:15:27,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 13:15:27,200 INFO  L262         TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjunts are in the unsatisfiable core
[2023-12-23 13:15:27,204 INFO  L285         TraceCheckSpWp]: Computing forward predicates...