/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-68.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 01:36:25,104 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 01:36:25,169 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 01:36:25,175 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 01:36:25,176 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 01:36:25,207 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 01:36:25,207 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 01:36:25,207 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 01:36:25,208 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 01:36:25,208 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 01:36:25,208 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 01:36:25,209 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 01:36:25,209 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 01:36:25,209 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 01:36:25,209 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 01:36:25,210 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 01:36:25,210 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 01:36:25,211 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 01:36:25,212 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 01:36:25,212 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 01:36:25,212 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 01:36:25,212 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 01:36:25,213 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 01:36:25,214 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 01:36:25,214 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 01:36:25,214 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 01:36:25,214 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 01:36:25,214 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 01:36:25,214 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 01:36:25,215 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 01:36:25,215 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 01:36:25,215 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 01:36:25,215 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 01:36:25,215 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 01:36:25,215 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 01:36:25,216 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 01:36:25,216 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 01:36:25,216 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 01:36:25,216 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 01:36:25,216 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 01:36:25,216 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 01:36:25,342 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 01:36:25,354 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 01:36:25,355 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 01:36:25,356 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 01:36:25,356 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 01:36:25,357 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-68.i
[2023-12-23 01:36:26,483 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 01:36:26,658 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 01:36:26,659 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-68.i
[2023-12-23 01:36:26,665 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e7de34e/46022ab257e64c92abc06f9b049aae30/FLAG29cbcd519
[2023-12-23 01:36:26,679 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64e7de34e/46022ab257e64c92abc06f9b049aae30
[2023-12-23 01:36:26,681 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 01:36:26,681 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 01:36:26,682 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 01:36:26,682 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 01:36:26,686 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 01:36:26,687 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,687 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240c6fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26, skipping insertion in model container
[2023-12-23 01:36:26,687 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,715 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 01:36:26,805 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-68.i[915,928]
[2023-12-23 01:36:26,842 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 01:36:26,852 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 01:36:26,861 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-68.i[915,928]
[2023-12-23 01:36:26,881 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 01:36:26,892 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 01:36:26,892 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26 WrapperNode
[2023-12-23 01:36:26,892 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 01:36:26,893 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 01:36:26,893 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 01:36:26,893 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 01:36:26,897 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,909 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,934 INFO  L138                Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 168
[2023-12-23 01:36:26,935 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 01:36:26,935 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 01:36:26,936 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 01:36:26,936 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 01:36:26,943 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,943 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,947 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,956 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 01:36:26,956 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,957 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,964 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,966 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,968 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,969 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,971 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 01:36:26,972 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 01:36:26,972 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 01:36:26,972 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 01:36:26,973 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (1/1) ...
[2023-12-23 01:36:26,986 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 01:36:26,996 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 01:36:27,035 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 01:36:27,042 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 01:36:27,061 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 01:36:27,061 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 01:36:27,061 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 01:36:27,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 01:36:27,062 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 01:36:27,063 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 01:36:27,173 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 01:36:27,177 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 01:36:27,637 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 01:36:27,661 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 01:36:27,661 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 01:36:27,662 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:36:27 BoogieIcfgContainer
[2023-12-23 01:36:27,662 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 01:36:27,663 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 01:36:27,663 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 01:36:27,665 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 01:36:27,666 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:36:26" (1/3) ...
[2023-12-23 01:36:27,666 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a33b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:36:27, skipping insertion in model container
[2023-12-23 01:36:27,666 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:36:26" (2/3) ...
[2023-12-23 01:36:27,666 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a33b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:36:27, skipping insertion in model container
[2023-12-23 01:36:27,666 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:36:27" (3/3) ...
[2023-12-23 01:36:27,667 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-68.i
[2023-12-23 01:36:27,679 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 01:36:27,679 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 01:36:27,715 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 01:36:27,722 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;@40fdba3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 01:36:27,722 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 01:36:27,724 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 63 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-23 01:36:27,736 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2023-12-23 01:36:27,736 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:36:27,737 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:27,737 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:36:27,742 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:36:27,742 INFO  L85        PathProgramCache]: Analyzing trace with hash -1341404151, now seen corresponding path program 1 times
[2023-12-23 01:36:27,752 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:36:27,753 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579709494]
[2023-12-23 01:36:27,753 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:36:27,753 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 01:36:27,753 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:36:27,755 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 01:36:27,756 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 01:36:27,984 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:36:27,993 INFO  L262         TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 01:36:27,999 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:36:28,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 524 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked.
[2023-12-23 01:36:28,048 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:36:28,048 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:36:28,049 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579709494]
[2023-12-23 01:36:28,049 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [579709494] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:36:28,049 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:36:28,049 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 01:36:28,050 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260492837]
[2023-12-23 01:36:28,051 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:36:28,063 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 01:36:28,063 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:36:28,092 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 01:36:28,092 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 01:36:28,094 INFO  L87              Difference]: Start difference. First operand  has 63 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)
[2023-12-23 01:36:28,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:36:28,303 INFO  L93              Difference]: Finished difference Result 123 states and 217 transitions.
[2023-12-23 01:36:28,315 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 01:36:28,316 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 143
[2023-12-23 01:36:28,316 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:36:28,321 INFO  L225             Difference]: With dead ends: 123
[2023-12-23 01:36:28,321 INFO  L226             Difference]: Without dead ends: 61
[2023-12-23 01:36:28,324 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 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 01:36:28,326 INFO  L413           NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 01:36:28,326 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 01:36:28,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2023-12-23 01:36:28,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2023-12-23 01:36:28,364 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2023-12-23 01:36:28,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 93 transitions.
[2023-12-23 01:36:28,366 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 93 transitions. Word has length 143
[2023-12-23 01:36:28,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:36:28,366 INFO  L495      AbstractCegarLoop]: Abstraction has 61 states and 93 transitions.
[2023-12-23 01:36:28,367 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)
[2023-12-23 01:36:28,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 93 transitions.
[2023-12-23 01:36:28,368 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2023-12-23 01:36:28,369 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:36:28,369 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:28,378 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-23 01:36:28,577 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 01:36:28,577 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:36:28,578 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:36:28,578 INFO  L85        PathProgramCache]: Analyzing trace with hash 1558738703, now seen corresponding path program 1 times
[2023-12-23 01:36:28,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:36:28,579 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624120859]
[2023-12-23 01:36:28,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:36:28,580 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 01:36:28,580 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:36:28,581 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 01:36:28,584 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 01:36:28,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:36:28,786 INFO  L262         TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 01:36:28,791 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:36:29,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked.
[2023-12-23 01:36:29,093 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:36:29,093 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:36:29,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624120859]
[2023-12-23 01:36:29,097 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624120859] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:36:29,097 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:36:29,098 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-23 01:36:29,098 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699088027]
[2023-12-23 01:36:29,098 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:36:29,101 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-12-23 01:36:29,101 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:36:29,102 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-12-23 01:36:29,102 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-12-23 01:36:29,103 INFO  L87              Difference]: Start difference. First operand 61 states and 93 transitions. Second operand  has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)
[2023-12-23 01:36:30,934 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 01:36:32,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:36:32,301 INFO  L93              Difference]: Finished difference Result 257 states and 390 transitions.
[2023-12-23 01:36:32,312 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-23 01:36:32,312 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143
[2023-12-23 01:36:32,313 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:36:32,315 INFO  L225             Difference]: With dead ends: 257
[2023-12-23 01:36:32,315 INFO  L226             Difference]: Without dead ends: 197
[2023-12-23 01:36:32,316 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156
[2023-12-23 01:36:32,316 INFO  L413           NwaCegarLoop]: 146 mSDtfsCounter, 211 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time
[2023-12-23 01:36:32,317 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 406 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time]
[2023-12-23 01:36:32,317 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 197 states.
[2023-12-23 01:36:32,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 108.
[2023-12-23 01:36:32,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 108 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 59 states have internal predecessors, (74), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46)
[2023-12-23 01:36:32,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 166 transitions.
[2023-12-23 01:36:32,338 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 166 transitions. Word has length 143
[2023-12-23 01:36:32,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:36:32,339 INFO  L495      AbstractCegarLoop]: Abstraction has 108 states and 166 transitions.
[2023-12-23 01:36:32,339 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)
[2023-12-23 01:36:32,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 166 transitions.
[2023-12-23 01:36:32,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2023-12-23 01:36:32,341 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:36:32,341 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:32,347 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
[2023-12-23 01:36:32,547 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 01:36:32,548 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:36:32,548 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:36:32,548 INFO  L85        PathProgramCache]: Analyzing trace with hash 1165711693, now seen corresponding path program 1 times
[2023-12-23 01:36:32,549 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:36:32,549 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280937709]
[2023-12-23 01:36:32,549 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:36:32,549 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 01:36:32,549 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:36:32,552 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 01:36:32,553 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 01:36:32,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:36:32,715 INFO  L262         TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 01:36:32,718 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:36:32,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked.
[2023-12-23 01:36:32,752 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:36:32,752 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:36:32,752 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280937709]
[2023-12-23 01:36:32,752 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [280937709] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:36:32,752 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:36:32,753 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-23 01:36:32,753 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455718125]
[2023-12-23 01:36:32,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:36:32,753 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 01:36:32,753 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:36:32,754 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 01:36:32,754 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 01:36:32,754 INFO  L87              Difference]: Start difference. First operand 108 states and 166 transitions. Second operand  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)
[2023-12-23 01:36:33,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:36:33,236 INFO  L93              Difference]: Finished difference Result 168 states and 258 transitions.
[2023-12-23 01:36:33,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 01:36:33,250 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 143
[2023-12-23 01:36:33,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:36:33,252 INFO  L225             Difference]: With dead ends: 168
[2023-12-23 01:36:33,252 INFO  L226             Difference]: Without dead ends: 108
[2023-12-23 01:36:33,252 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 01:36:33,253 INFO  L413           NwaCegarLoop]: 81 mSDtfsCounter, 96 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-23 01:36:33,253 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 155 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-23 01:36:33,254 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2023-12-23 01:36:33,270 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108.
[2023-12-23 01:36:33,271 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 108 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 59 states have internal predecessors, (73), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46)
[2023-12-23 01:36:33,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 165 transitions.
[2023-12-23 01:36:33,272 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 165 transitions. Word has length 143
[2023-12-23 01:36:33,273 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:36:33,273 INFO  L495      AbstractCegarLoop]: Abstraction has 108 states and 165 transitions.
[2023-12-23 01:36:33,273 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23)
[2023-12-23 01:36:33,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 165 transitions.
[2023-12-23 01:36:33,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2023-12-23 01:36:33,275 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:36:33,275 INFO  L195           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:33,288 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 01:36:33,483 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 01:36:33,483 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:36:33,483 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:36:33,484 INFO  L85        PathProgramCache]: Analyzing trace with hash 1293876049, now seen corresponding path program 1 times
[2023-12-23 01:36:33,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:36:33,484 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919197292]
[2023-12-23 01:36:33,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:36:33,484 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 01:36:33,484 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:36:33,485 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 01:36:33,492 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 01:36:33,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:36:33,658 INFO  L262         TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-12-23 01:36:33,664 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:36:34,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 395 proven. 108 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked.
[2023-12-23 01:36:34,529 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 01:36:36,482 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:36:36,482 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919197292]
[2023-12-23 01:36:36,483 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919197292] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 01:36:36,483 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1399109659]
[2023-12-23 01:36:36,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:36:36,483 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 01:36:36,483 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 01:36:36,526 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 01:36:36,543 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 01:36:37,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:36:37,398 INFO  L262         TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-12-23 01:36:37,402 INFO  L285         TraceCheckSpWp]: Computing forward predicates...